./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 9bd2c7ff 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_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/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_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:37:47,301 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:37:47,384 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-19 07:37:47,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:37:47,389 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:37:47,413 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:37:47,414 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:37:47,415 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:37:47,416 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:37:47,417 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:37:47,418 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:37:47,418 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-19 07:37:47,419 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-19 07:37:47,419 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-19 07:37:47,420 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-19 07:37:47,421 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-19 07:37:47,421 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-19 07:37:47,422 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:37:47,422 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-19 07:37:47,423 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:37:47,424 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:37:47,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:37:47,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:37:47,425 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-19 07:37:47,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-19 07:37:47,426 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-19 07:37:47,427 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:37:47,427 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:37:47,428 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:37:47,428 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-19 07:37:47,429 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:37:47,429 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:37:47,430 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:37:47,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:37:47,430 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:37:47,431 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-19 07:37:47,431 INFO L153 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_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db [2023-11-19 07:37:47,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:37:47,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:37:47,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:37:47,785 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:37:47,786 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:37:47,787 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2023-11-19 07:37:50,954 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:37:51,173 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:37:51,174 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2023-11-19 07:37:51,184 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/data/117503306/2bf549edbbbe442f94cc6db39820133b/FLAG1520b52d7 [2023-11-19 07:37:51,199 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/data/117503306/2bf549edbbbe442f94cc6db39820133b [2023-11-19 07:37:51,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:37:51,203 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:37:51,205 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:51,205 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:37:51,211 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:37:51,212 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:51" (1/1) ... [2023-11-19 07:37:51,213 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7edf184a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:51, skipping insertion in model container [2023-11-19 07:37:51,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:51" (1/1) ... [2023-11-19 07:37:51,239 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:37:51,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:51,423 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:37:51,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:51,460 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:37:51,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:51 WrapperNode [2023-11-19 07:37:51,461 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:51,463 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:51,463 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:37:51,463 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:37:51,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:51" (1/1) ... [2023-11-19 07:37:51,479 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:51" (1/1) ... [2023-11-19 07:37:51,498 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2023-11-19 07:37:51,499 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:51,500 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:37:51,500 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:37:51,500 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:37:51,510 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:51" (1/1) ... [2023-11-19 07:37:51,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:51" (1/1) ... [2023-11-19 07:37:51,512 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:51" (1/1) ... [2023-11-19 07:37:51,512 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:51" (1/1) ... [2023-11-19 07:37:51,515 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:51" (1/1) ... [2023-11-19 07:37:51,519 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:51" (1/1) ... [2023-11-19 07:37:51,521 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:51" (1/1) ... [2023-11-19 07:37:51,522 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:51" (1/1) ... [2023-11-19 07:37:51,524 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:37:51,525 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:37:51,525 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:37:51,525 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:37:51,526 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:51" (1/1) ... [2023-11-19 07:37:51,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:51,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:51,575 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:51,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-19 07:37:51,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:37:51,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:37:51,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:37:51,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:37:51,711 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:37:51,714 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:37:51,973 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:37:51,991 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:37:52,000 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:37:52,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:52 BoogieIcfgContainer [2023-11-19 07:37:52,004 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:37:52,006 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-19 07:37:52,006 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-19 07:37:52,010 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-19 07:37:52,012 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:37:52,012 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 07:37:51" (1/3) ... [2023-11-19 07:37:52,013 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14d87eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:37:52, skipping insertion in model container [2023-11-19 07:37:52,013 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:37:52,014 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:51" (2/3) ... [2023-11-19 07:37:52,014 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14d87eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:37:52, skipping insertion in model container [2023-11-19 07:37:52,014 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:37:52,015 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:52" (3/3) ... [2023-11-19 07:37:52,017 INFO L332 chiAutomizerObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2023-11-19 07:37:52,102 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-19 07:37:52,102 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-19 07:37:52,102 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-19 07:37:52,103 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-19 07:37:52,103 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-19 07:37:52,104 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-19 07:37:52,104 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-19 07:37:52,104 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-19 07:37:52,109 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 24 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 states have internal predecessors, (39), 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) [2023-11-19 07:37:52,130 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2023-11-19 07:37:52,130 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:37:52,130 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:37:52,138 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:37:52,139 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-19 07:37:52,139 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-19 07:37:52,140 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 24 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 states have internal predecessors, (39), 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) [2023-11-19 07:37:52,145 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2023-11-19 07:37:52,145 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:37:52,146 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:37:52,146 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:37:52,146 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-19 07:37:52,156 INFO L748 eck$LassoCheckResult]: Stem: 20#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;havoc main_#t~nondet4#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 6#$Ultimate##5true [2023-11-19 07:37:52,157 INFO L750 eck$LassoCheckResult]: Loop: 6#$Ultimate##5true assume !false; 3#L30true assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 11#L36true assume 8466 == main_~s__state~0#1; 7#$Ultimate##17true assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 17#L69-1true assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 6#$Ultimate##5true [2023-11-19 07:37:52,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:52,163 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-19 07:37:52,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:52,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734728690] [2023-11-19 07:37:52,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:52,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:52,290 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:52,331 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:52,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:52,335 INFO L85 PathProgramCache]: Analyzing trace with hash 39284085, now seen corresponding path program 1 times [2023-11-19 07:37:52,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:52,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835663165] [2023-11-19 07:37:52,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:52,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:52,353 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:52,363 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:52,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:52,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723571, now seen corresponding path program 1 times [2023-11-19 07:37:52,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:52,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309588797] [2023-11-19 07:37:52,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:52,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:52,390 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:52,419 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:52,551 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:37:52,551 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:37:52,552 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:37:52,552 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:37:52,552 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:37:52,552 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:52,553 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:37:52,553 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:37:52,553 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2023-11-19 07:37:52,554 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:37:52,554 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:37:52,573 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:52,586 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:52,593 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:52,654 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:37:52,654 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:37:52,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:52,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:52,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:52,691 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:52,691 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:52,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-19 07:37:52,717 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:37:52,717 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: [] [2023-11-19 07:37:52,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-11-19 07:37:52,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:52,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:52,736 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:52,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-19 07:37:52,739 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:52,739 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:52,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-11-19 07:37:52,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:52,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:52,764 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:52,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-19 07:37:52,766 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:37:52,766 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:52,791 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:37:52,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:52,814 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:37:52,814 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:37:52,815 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:37:52,815 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:37:52,815 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:37:52,815 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:52,815 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:37:52,815 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:37:52,815 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2023-11-19 07:37:52,816 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:37:52,816 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:37:52,817 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:52,822 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:52,828 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:52,882 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:37:52,886 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:37:52,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:52,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:52,890 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:52,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-19 07:37:52,899 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 [2023-11-19 07:37:52,912 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:52,912 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:52,913 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:52,913 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:37:52,913 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:52,916 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:37:52,916 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:52,938 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:37:52,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:52,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:52,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:52,980 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:52,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-19 07:37:52,988 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 [2023-11-19 07:37:53,000 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:53,000 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:53,001 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:53,001 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:37:53,001 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:53,002 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:37:53,003 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:53,018 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:37:53,026 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:37:53,026 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:37:53,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:53,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:53,054 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:53,057 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:37:53,057 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:37:53,057 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:37:53,058 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 [] [2023-11-19 07:37:53,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-19 07:37:53,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:53,079 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:37:53,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:53,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:53,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:37:53,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:53,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:37:53,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:53,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:53,242 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 [2023-11-19 07:37:53,244 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 24 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 states have internal predecessors, (39), 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) [2023-11-19 07:37:53,314 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 24 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 states have internal predecessors, (39), 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 51 states and 83 transitions. Complement of second has 6 states. [2023-11-19 07:37:53,316 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 [2023-11-19 07:37:53,321 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) [2023-11-19 07:37:53,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2023-11-19 07:37:53,324 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 2 letters. Loop has 5 letters. [2023-11-19 07:37:53,325 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:53,325 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 7 letters. Loop has 5 letters. [2023-11-19 07:37:53,325 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:53,326 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 2 letters. Loop has 10 letters. [2023-11-19 07:37:53,326 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:53,327 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 83 transitions. [2023-11-19 07:37:53,331 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2023-11-19 07:37:53,335 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 38 states and 59 transitions. [2023-11-19 07:37:53,336 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2023-11-19 07:37:53,337 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2023-11-19 07:37:53,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 59 transitions. [2023-11-19 07:37:53,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:37:53,338 INFO L218 hiAutomatonCegarLoop]: Abstraction has 38 states and 59 transitions. [2023-11-19 07:37:53,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 59 transitions. [2023-11-19 07:37:53,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2023-11-19 07:37:53,367 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) [2023-11-19 07:37:53,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2023-11-19 07:37:53,369 INFO L240 hiAutomatonCegarLoop]: Abstraction has 36 states and 57 transitions. [2023-11-19 07:37:53,369 INFO L428 stractBuchiCegarLoop]: Abstraction has 36 states and 57 transitions. [2023-11-19 07:37:53,369 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-19 07:37:53,369 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 57 transitions. [2023-11-19 07:37:53,371 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2023-11-19 07:37:53,371 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:37:53,371 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:37:53,372 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-19 07:37:53,372 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-19 07:37:53,372 INFO L748 eck$LassoCheckResult]: Stem: 155#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;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); 147#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;havoc main_#t~nondet4#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 148#$Ultimate##5 assume !false; 120#L30 [2023-11-19 07:37:53,372 INFO L750 eck$LassoCheckResult]: Loop: 120#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 121#L36 assume 8466 == main_~s__state~0#1; 134#$Ultimate##17 assume !(0 == main_~blastFlag~0#1); 135#L69-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 132#$Ultimate##5 assume !false; 120#L30 [2023-11-19 07:37:53,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:53,373 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-11-19 07:37:53,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:53,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147472865] [2023-11-19 07:37:53,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:53,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:53,381 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:53,387 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:53,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:53,388 INFO L85 PathProgramCache]: Analyzing trace with hash 44013377, now seen corresponding path program 1 times [2023-11-19 07:37:53,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:53,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109251671] [2023-11-19 07:37:53,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:53,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:53,394 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:53,398 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:53,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:53,399 INFO L85 PathProgramCache]: Analyzing trace with hash 297857786, now seen corresponding path program 1 times [2023-11-19 07:37:53,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:53,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077357494] [2023-11-19 07:37:53,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:53,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:53,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:53,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:53,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077357494] [2023-11-19 07:37:53,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077357494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:53,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:53,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:37:53,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458137803] [2023-11-19 07:37:53,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:53,548 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:37:53,549 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:37:53,549 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:37:53,549 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:37:53,549 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:37:53,549 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:53,550 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:37:53,550 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:37:53,550 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2023-11-19 07:37:53,551 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:37:53,551 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:37:53,552 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:53,558 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:53,562 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:53,619 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:37:53,619 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:37:53,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:53,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:53,622 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:53,632 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:53,632 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:53,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-19 07:37:53,655 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:37:53,655 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: [] [2023-11-19 07:37:53,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:53,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:53,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:53,680 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:53,691 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:53,691 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:53,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-19 07:37:53,717 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:37:53,717 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: [] [2023-11-19 07:37:53,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:53,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:53,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:53,743 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:53,750 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:53,750 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:53,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-19 07:37:53,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:53,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:53,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:53,798 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:53,801 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:37:53,801 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:53,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-19 07:37:53,825 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:37:53,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:53,849 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:37:53,849 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:37:53,849 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:37:53,849 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:37:53,849 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:37:53,849 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:53,849 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:37:53,850 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:37:53,850 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2023-11-19 07:37:53,850 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:37:53,850 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:37:53,851 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:53,860 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:53,864 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:53,928 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:37:53,928 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:37:53,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:53,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:53,929 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:53,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-19 07:37:53,935 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 [2023-11-19 07:37:53,945 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:53,946 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:53,946 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:53,946 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-11-19 07:37:53,946 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:53,948 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-11-19 07:37:53,948 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:53,957 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:37:53,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:53,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:53,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:53,979 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:53,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-19 07:37:53,986 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 [2023-11-19 07:37:53,998 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:53,999 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:53,999 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:53,999 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:37:53,999 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:54,000 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:37:54,000 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:54,022 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:37:54,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:54,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:54,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:54,046 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:54,049 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 [2023-11-19 07:37:54,061 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:54,062 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:54,062 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:54,062 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:37:54,062 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:54,064 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:37:54,064 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:54,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-19 07:37:54,078 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:37:54,080 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:37:54,081 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:37:54,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:54,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:54,083 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:54,087 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:37:54,087 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:37:54,087 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:37:54,087 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 [] [2023-11-19 07:37:54,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-19 07:37:54,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:54,111 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:37:54,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:54,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:37:54,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:54,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:37:54,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:54,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:54,202 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 [2023-11-19 07:37:54,203 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) [2023-11-19 07:37:54,276 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. [2023-11-19 07:37:54,277 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 [2023-11-19 07:37:54,278 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) [2023-11-19 07:37:54,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2023-11-19 07:37:54,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 5 letters. [2023-11-19 07:37:54,279 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:54,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 8 letters. Loop has 5 letters. [2023-11-19 07:37:54,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:54,280 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 10 letters. [2023-11-19 07:37:54,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:54,281 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 155 transitions. [2023-11-19 07:37:54,285 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2023-11-19 07:37:54,286 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 77 states and 121 transitions. [2023-11-19 07:37:54,287 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2023-11-19 07:37:54,287 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2023-11-19 07:37:54,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 121 transitions. [2023-11-19 07:37:54,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:37:54,288 INFO L218 hiAutomatonCegarLoop]: Abstraction has 77 states and 121 transitions. [2023-11-19 07:37:54,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 121 transitions. [2023-11-19 07:37:54,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 54. [2023-11-19 07:37:54,293 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) [2023-11-19 07:37:54,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 86 transitions. [2023-11-19 07:37:54,294 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 86 transitions. [2023-11-19 07:37:54,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:54,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:54,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:54,298 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) [2023-11-19 07:37:54,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:54,329 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2023-11-19 07:37:54,330 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 128 transitions. [2023-11-19 07:37:54,332 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2023-11-19 07:37:54,333 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 87 states and 125 transitions. [2023-11-19 07:37:54,333 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2023-11-19 07:37:54,334 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2023-11-19 07:37:54,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 125 transitions. [2023-11-19 07:37:54,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:37:54,334 INFO L218 hiAutomatonCegarLoop]: Abstraction has 87 states and 125 transitions. [2023-11-19 07:37:54,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 125 transitions. [2023-11-19 07:37:54,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2023-11-19 07:37:54,340 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) [2023-11-19 07:37:54,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 123 transitions. [2023-11-19 07:37:54,342 INFO L240 hiAutomatonCegarLoop]: Abstraction has 85 states and 123 transitions. [2023-11-19 07:37:54,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:54,343 INFO L428 stractBuchiCegarLoop]: Abstraction has 85 states and 123 transitions. [2023-11-19 07:37:54,343 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-19 07:37:54,343 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 85 states and 123 transitions. [2023-11-19 07:37:54,345 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2023-11-19 07:37:54,345 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:37:54,345 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:37:54,346 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-19 07:37:54,346 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:37:54,346 INFO L748 eck$LassoCheckResult]: Stem: 495#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;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); 480#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;havoc main_#t~nondet4#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 481#$Ultimate##5 assume !false; 454#L30 [2023-11-19 07:37:54,346 INFO L750 eck$LassoCheckResult]: Loop: 454#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 455#L36 assume !(8466 == main_~s__state~0#1); 477#L41 assume 8512 == main_~s__state~0#1; 462#main_switch_1_8512#1 havoc main_#t~nondet5#1;main_~tmp___1~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 463#L81 assume 0 != main_~tmp___1~0#1;main_~s__state~0#1 := 8466; 466#$Ultimate##5 assume !false; 454#L30 [2023-11-19 07:37:54,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:54,347 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 2 times [2023-11-19 07:37:54,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:54,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676698260] [2023-11-19 07:37:54,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:54,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:54,352 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:54,361 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:54,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:54,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1365729718, now seen corresponding path program 1 times [2023-11-19 07:37:54,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:54,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864321585] [2023-11-19 07:37:54,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:54,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:54,368 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:54,378 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:54,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:54,379 INFO L85 PathProgramCache]: Analyzing trace with hash 644971805, now seen corresponding path program 1 times [2023-11-19 07:37:54,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:54,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411378146] [2023-11-19 07:37:54,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:54,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:54,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:54,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411378146] [2023-11-19 07:37:54,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411378146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:54,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:54,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:37:54,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965179757] [2023-11-19 07:37:54,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:54,466 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:37:54,467 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:37:54,467 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:37:54,467 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:37:54,467 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:37:54,467 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:54,467 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:37:54,467 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:37:54,467 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2023-11-19 07:37:54,468 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:37:54,468 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:37:54,470 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:54,473 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:54,477 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:54,484 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:54,520 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:37:54,520 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:37:54,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:54,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:54,522 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:54,529 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:54,529 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:54,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-19 07:37:54,558 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:37:54,558 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp___1~0#1=4} Honda state: {ULTIMATE.start_main_~tmp___1~0#1=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:37:54,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:54,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:54,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:54,579 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:54,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-19 07:37:54,584 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:54,586 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:54,603 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:37:54,603 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5#1=0} Honda state: {ULTIMATE.start_main_#t~nondet5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:37:54,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:54,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:54,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:54,616 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:54,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-19 07:37:54,619 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:54,619 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:54,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:54,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:54,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:54,644 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:54,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-19 07:37:54,648 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:37:54,648 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:54,681 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:37:54,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:54,700 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:37:54,700 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:37:54,700 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:37:54,701 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:37:54,701 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:37:54,701 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:54,701 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:37:54,701 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:37:54,701 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2023-11-19 07:37:54,701 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:37:54,701 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:37:54,702 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:54,706 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:54,710 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:54,721 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:54,768 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:37:54,768 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:37:54,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:54,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:54,770 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:54,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-19 07:37:54,784 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 [2023-11-19 07:37:54,797 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:54,797 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:54,797 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:54,797 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:37:54,797 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:54,798 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:37:54,798 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:54,807 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:37:54,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:54,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:54,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:54,839 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:54,844 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 [2023-11-19 07:37:54,856 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:54,856 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:54,857 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:54,857 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-11-19 07:37:54,857 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:54,858 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-11-19 07:37:54,858 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:54,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-19 07:37:54,868 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:37:54,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:54,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:54,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:54,892 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:54,901 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 [2023-11-19 07:37:54,913 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:54,913 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:54,913 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:54,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:37:54,914 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:54,915 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:37:54,915 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:54,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-19 07:37:54,925 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:37:54,929 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:37:54,929 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:37:54,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:54,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:54,931 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:54,933 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:37:54,933 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:37:54,933 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:37:54,933 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 [] [2023-11-19 07:37:54,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-19 07:37:54,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:54,958 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:37:54,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:54,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:37:54,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:55,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:37:55,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:55,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:55,048 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 [2023-11-19 07:37:55,049 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) [2023-11-19 07:37:55,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:55,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:55,187 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. [2023-11-19 07:37:55,188 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 [2023-11-19 07:37:55,190 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) [2023-11-19 07:37:55,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2023-11-19 07:37:55,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 6 letters. [2023-11-19 07:37:55,194 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:55,194 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 9 letters. Loop has 6 letters. [2023-11-19 07:37:55,194 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:55,194 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 12 letters. [2023-11-19 07:37:55,195 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:55,196 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 170 states and 232 transitions. [2023-11-19 07:37:55,201 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2023-11-19 07:37:55,208 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 170 states to 141 states and 196 transitions. [2023-11-19 07:37:55,208 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 47 [2023-11-19 07:37:55,209 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2023-11-19 07:37:55,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 196 transitions. [2023-11-19 07:37:55,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:37:55,209 INFO L218 hiAutomatonCegarLoop]: Abstraction has 141 states and 196 transitions. [2023-11-19 07:37:55,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states and 196 transitions. [2023-11-19 07:37:55,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 105. [2023-11-19 07:37:55,222 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) [2023-11-19 07:37:55,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 148 transitions. [2023-11-19 07:37:55,225 INFO L240 hiAutomatonCegarLoop]: Abstraction has 105 states and 148 transitions. [2023-11-19 07:37:55,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:55,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:55,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:55,229 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) [2023-11-19 07:37:55,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:55,267 INFO L93 Difference]: Finished difference Result 65 states and 94 transitions. [2023-11-19 07:37:55,267 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 94 transitions. [2023-11-19 07:37:55,268 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2023-11-19 07:37:55,269 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 61 states and 90 transitions. [2023-11-19 07:37:55,269 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2023-11-19 07:37:55,269 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2023-11-19 07:37:55,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 90 transitions. [2023-11-19 07:37:55,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:37:55,270 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 90 transitions. [2023-11-19 07:37:55,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 90 transitions. [2023-11-19 07:37:55,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-11-19 07:37:55,274 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) [2023-11-19 07:37:55,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 90 transitions. [2023-11-19 07:37:55,274 INFO L240 hiAutomatonCegarLoop]: Abstraction has 61 states and 90 transitions. [2023-11-19 07:37:55,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:55,275 INFO L428 stractBuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2023-11-19 07:37:55,276 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-19 07:37:55,276 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 61 states and 90 transitions. [2023-11-19 07:37:55,276 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2023-11-19 07:37:55,277 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:37:55,277 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:37:55,277 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:55,277 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:37:55,278 INFO L748 eck$LassoCheckResult]: Stem: 975#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 966#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;havoc main_#t~nondet4#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 967#$Ultimate##5 assume !false; 937#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 938#L36 assume 8466 == main_~s__state~0#1; 965#$Ultimate##17 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 981#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 977#$Ultimate##5 assume !false; 976#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 963#L36 assume !(8466 == main_~s__state~0#1); 964#L41 [2023-11-19 07:37:55,278 INFO L750 eck$LassoCheckResult]: Loop: 964#L41 assume 8512 == main_~s__state~0#1; 939#main_switch_1_8512#1 havoc main_#t~nondet5#1;main_~tmp___1~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 940#L81 assume !(0 != main_~tmp___1~0#1);main_~s__state~0#1 := 8640; 961#$Ultimate##5 assume !false; 995#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 994#L36 assume !(8466 == main_~s__state~0#1); 964#L41 [2023-11-19 07:37:55,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:55,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1523382593, now seen corresponding path program 1 times [2023-11-19 07:37:55,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:55,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031625409] [2023-11-19 07:37:55,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:55,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:55,291 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:55,301 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:55,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:55,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1623382260, now seen corresponding path program 1 times [2023-11-19 07:37:55,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:55,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731736151] [2023-11-19 07:37:55,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:55,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:55,312 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:55,319 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:55,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:55,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1141286606, now seen corresponding path program 1 times [2023-11-19 07:37:55,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:55,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49102357] [2023-11-19 07:37:55,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:55,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:55,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:55,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49102357] [2023-11-19 07:37:55,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49102357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:55,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:55,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:37:55,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147743007] [2023-11-19 07:37:55,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:55,419 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:37:55,419 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:37:55,419 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:37:55,419 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:37:55,419 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:37:55,419 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:55,419 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:37:55,420 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:37:55,420 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2023-11-19 07:37:55,420 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:37:55,420 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:37:55,420 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:55,423 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:55,429 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:55,456 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:37:55,456 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:37:55,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:55,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:55,458 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:55,466 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:55,466 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:55,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-19 07:37:55,490 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:37:55,490 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp___1~0#1=0} Honda state: {ULTIMATE.start_main_~tmp___1~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:37:55,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:55,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:55,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:55,515 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:55,522 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:55,522 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:55,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-19 07:37:55,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:55,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:55,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:55,570 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:55,574 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:37:55,574 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:55,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-19 07:37:55,614 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:37:55,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:55,632 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:37:55,632 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:37:55,632 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:37:55,632 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:37:55,632 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:37:55,632 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:55,633 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:37:55,633 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:37:55,633 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2023-11-19 07:37:55,633 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:37:55,633 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:37:55,634 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:55,637 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:55,644 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:55,679 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:37:55,679 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:37:55,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:55,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:55,683 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:55,691 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 [2023-11-19 07:37:55,704 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:55,704 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:55,704 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:55,704 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:37:55,704 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:55,705 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:37:55,705 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:55,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-19 07:37:55,711 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:37:55,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2023-11-19 07:37:55,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:55,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:55,728 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:55,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-19 07:37:55,731 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 [2023-11-19 07:37:55,741 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:55,741 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:55,741 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:55,741 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:37:55,741 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:55,742 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:37:55,742 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:55,753 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:37:55,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2023-11-19 07:37:55,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:55,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:55,767 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:55,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-19 07:37:55,772 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:37:55,782 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:55,782 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:55,782 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:55,782 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:37:55,782 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:55,783 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:37:55,783 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:55,790 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:37:55,792 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:37:55,792 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:37:55,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:55,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:55,793 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:55,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-19 07:37:55,794 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:37:55,795 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:37:55,795 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:37:55,795 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 [] [2023-11-19 07:37:55,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2023-11-19 07:37:55,809 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:37:55,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:55,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:37:55,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:55,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:37:55,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:55,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:55,935 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 [2023-11-19 07:37:55,935 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) [2023-11-19 07:37:56,023 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. [2023-11-19 07:37:56,024 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 [2023-11-19 07:37:56,026 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) [2023-11-19 07:37:56,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2023-11-19 07:37:56,026 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 6 letters. [2023-11-19 07:37:56,029 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:56,030 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 16 letters. Loop has 6 letters. [2023-11-19 07:37:56,030 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:56,030 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 12 letters. [2023-11-19 07:37:56,030 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:56,030 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 281 transitions. [2023-11-19 07:37:56,035 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2023-11-19 07:37:56,037 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 163 states and 245 transitions. [2023-11-19 07:37:56,037 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2023-11-19 07:37:56,037 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2023-11-19 07:37:56,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 163 states and 245 transitions. [2023-11-19 07:37:56,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:37:56,038 INFO L218 hiAutomatonCegarLoop]: Abstraction has 163 states and 245 transitions. [2023-11-19 07:37:56,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states and 245 transitions. [2023-11-19 07:37:56,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 125. [2023-11-19 07:37:56,061 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) [2023-11-19 07:37:56,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 183 transitions. [2023-11-19 07:37:56,062 INFO L240 hiAutomatonCegarLoop]: Abstraction has 125 states and 183 transitions. [2023-11-19 07:37:56,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:56,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:56,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:56,064 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) [2023-11-19 07:37:56,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:56,098 INFO L93 Difference]: Finished difference Result 164 states and 223 transitions. [2023-11-19 07:37:56,098 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 164 states and 223 transitions. [2023-11-19 07:37:56,102 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 36 [2023-11-19 07:37:56,103 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 164 states to 154 states and 211 transitions. [2023-11-19 07:37:56,103 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2023-11-19 07:37:56,105 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2023-11-19 07:37:56,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 154 states and 211 transitions. [2023-11-19 07:37:56,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:37:56,105 INFO L218 hiAutomatonCegarLoop]: Abstraction has 154 states and 211 transitions. [2023-11-19 07:37:56,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states and 211 transitions. [2023-11-19 07:37:56,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 134. [2023-11-19 07:37:56,123 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) [2023-11-19 07:37:56,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 191 transitions. [2023-11-19 07:37:56,124 INFO L240 hiAutomatonCegarLoop]: Abstraction has 134 states and 191 transitions. [2023-11-19 07:37:56,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:56,126 INFO L428 stractBuchiCegarLoop]: Abstraction has 134 states and 191 transitions. [2023-11-19 07:37:56,126 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-19 07:37:56,127 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 134 states and 191 transitions. [2023-11-19 07:37:56,129 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 35 [2023-11-19 07:37:56,129 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:37:56,129 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:37:56,130 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:56,131 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:56,131 INFO L748 eck$LassoCheckResult]: Stem: 1585#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;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); 1574#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;havoc main_#t~nondet4#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; 1575#$Ultimate##5 assume !false; 1677#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1676#L36 assume 8466 == main_~s__state~0#1; 1641#$Ultimate##17 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 1639#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1557#$Ultimate##5 [2023-11-19 07:37:56,131 INFO L750 eck$LassoCheckResult]: Loop: 1557#$Ultimate##5 assume !false; 1545#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1546#L36 assume !(8466 == main_~s__state~0#1); 1572#L41 assume !(8512 == main_~s__state~0#1); 1587#L57 assume !(8640 == main_~s__state~0#1); 1553#L61 assume 8656 == main_~s__state~0#1; 1554#$Ultimate##31 assume 2 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 3; 1564#L100-1 assume 4 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 5; 1566#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 1582#$Ultimate##5 assume !false; 1622#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1623#L36 assume 8466 == main_~s__state~0#1; 1559#$Ultimate##17 assume !(0 == main_~blastFlag~0#1); 1560#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1557#$Ultimate##5 [2023-11-19 07:37:56,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:56,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 1 times [2023-11-19 07:37:56,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:56,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385796717] [2023-11-19 07:37:56,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:56,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:56,140 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:56,146 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:56,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:56,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1982564596, now seen corresponding path program 1 times [2023-11-19 07:37:56,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:56,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571989065] [2023-11-19 07:37:56,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:56,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:56,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:56,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571989065] [2023-11-19 07:37:56,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571989065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:56,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:56,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:37:56,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046787821] [2023-11-19 07:37:56,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:56,171 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:37:56,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:56,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:56,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:56,172 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) [2023-11-19 07:37:56,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:56,194 INFO L93 Difference]: Finished difference Result 182 states and 254 transitions. [2023-11-19 07:37:56,194 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 254 transitions. [2023-11-19 07:37:56,195 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2023-11-19 07:37:56,197 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 182 states and 254 transitions. [2023-11-19 07:37:56,197 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 70 [2023-11-19 07:37:56,197 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 70 [2023-11-19 07:37:56,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 254 transitions. [2023-11-19 07:37:56,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:37:56,198 INFO L218 hiAutomatonCegarLoop]: Abstraction has 182 states and 254 transitions. [2023-11-19 07:37:56,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 254 transitions. [2023-11-19 07:37:56,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2023-11-19 07:37:56,202 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) [2023-11-19 07:37:56,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 254 transitions. [2023-11-19 07:37:56,203 INFO L240 hiAutomatonCegarLoop]: Abstraction has 182 states and 254 transitions. [2023-11-19 07:37:56,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:56,204 INFO L428 stractBuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2023-11-19 07:37:56,204 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-19 07:37:56,204 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 182 states and 254 transitions. [2023-11-19 07:37:56,205 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2023-11-19 07:37:56,206 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:37:56,206 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:37:56,206 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:56,207 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:56,207 INFO L748 eck$LassoCheckResult]: Stem: 1916#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;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); 1896#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;havoc main_#t~nondet4#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; 1897#$Ultimate##5 assume !false; 2002#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2003#L36 assume 8466 == main_~s__state~0#1; 1966#$Ultimate##17 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 1963#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1879#$Ultimate##5 [2023-11-19 07:37:56,207 INFO L750 eck$LassoCheckResult]: Loop: 1879#$Ultimate##5 assume !false; 1880#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1968#L36 assume !(8466 == main_~s__state~0#1); 1946#L41 assume !(8512 == main_~s__state~0#1); 1947#L57 assume !(8640 == main_~s__state~0#1); 1871#L61 assume 8656 == main_~s__state~0#1; 1872#$Ultimate##31 assume 2 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 3; 1887#L100-1 assume !(4 == main_~blastFlag~0#1); 1888#L107 assume !(5 == main_~blastFlag~0#1); 1917#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 1892#$Ultimate##5 assume !false; 1997#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1995#L36 assume 8466 == main_~s__state~0#1; 1882#$Ultimate##17 assume !(0 == main_~blastFlag~0#1); 1883#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1879#$Ultimate##5 [2023-11-19 07:37:56,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:56,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 2 times [2023-11-19 07:37:56,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:56,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82013434] [2023-11-19 07:37:56,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:56,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:56,213 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:56,218 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:56,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:56,219 INFO L85 PathProgramCache]: Analyzing trace with hash 862619384, now seen corresponding path program 1 times [2023-11-19 07:37:56,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:56,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245579542] [2023-11-19 07:37:56,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:56,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:56,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:56,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245579542] [2023-11-19 07:37:56,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245579542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:56,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:56,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:37:56,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836563633] [2023-11-19 07:37:56,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:56,242 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:37:56,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:56,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:56,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:56,242 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) [2023-11-19 07:37:56,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:56,273 INFO L93 Difference]: Finished difference Result 157 states and 202 transitions. [2023-11-19 07:37:56,274 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 157 states and 202 transitions. [2023-11-19 07:37:56,275 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2023-11-19 07:37:56,276 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 157 states to 111 states and 141 transitions. [2023-11-19 07:37:56,276 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 58 [2023-11-19 07:37:56,276 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2023-11-19 07:37:56,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 141 transitions. [2023-11-19 07:37:56,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:37:56,277 INFO L218 hiAutomatonCegarLoop]: Abstraction has 111 states and 141 transitions. [2023-11-19 07:37:56,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 141 transitions. [2023-11-19 07:37:56,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2023-11-19 07:37:56,279 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) [2023-11-19 07:37:56,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 134 transitions. [2023-11-19 07:37:56,280 INFO L240 hiAutomatonCegarLoop]: Abstraction has 105 states and 134 transitions. [2023-11-19 07:37:56,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:56,281 INFO L428 stractBuchiCegarLoop]: Abstraction has 105 states and 134 transitions. [2023-11-19 07:37:56,282 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-19 07:37:56,282 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 105 states and 134 transitions. [2023-11-19 07:37:56,283 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2023-11-19 07:37:56,283 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:37:56,283 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:37:56,284 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:56,284 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:56,284 INFO L748 eck$LassoCheckResult]: Stem: 2249#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;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); 2234#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;havoc main_#t~nondet4#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; 2222#$Ultimate##5 assume !false; 2223#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2308#L36 assume 8466 == main_~s__state~0#1; 2271#$Ultimate##17 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 2268#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 2267#$Ultimate##5 [2023-11-19 07:37:56,286 INFO L750 eck$LassoCheckResult]: Loop: 2267#$Ultimate##5 assume !false; 2285#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2282#L36 assume !(8466 == main_~s__state~0#1); 2279#L41 assume !(8512 == main_~s__state~0#1); 2252#L57 assume !(8640 == main_~s__state~0#1); 2220#L61 assume 8656 == main_~s__state~0#1; 2221#$Ultimate##31 assume 2 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 3; 2231#L100-1 assume !(4 == main_~blastFlag~0#1); 2232#L107 assume !(5 == main_~blastFlag~0#1); 2250#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 2251#$Ultimate##5 assume !false; 2212#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2213#L36 assume !(8466 == main_~s__state~0#1); 2235#L41 assume !(8512 == main_~s__state~0#1); 2244#L57 assume 8640 == main_~s__state~0#1; 2256#$Ultimate##26 assume !(3 == main_~blastFlag~0#1); 2289#L89-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8656; 2267#$Ultimate##5 [2023-11-19 07:37:56,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:56,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 3 times [2023-11-19 07:37:56,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:56,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76541232] [2023-11-19 07:37:56,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:56,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:56,301 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:56,310 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:56,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:56,315 INFO L85 PathProgramCache]: Analyzing trace with hash 49895967, now seen corresponding path program 1 times [2023-11-19 07:37:56,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:56,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728992686] [2023-11-19 07:37:56,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:56,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:56,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:56,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:56,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728992686] [2023-11-19 07:37:56,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728992686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:56,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:56,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:37:56,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951784573] [2023-11-19 07:37:56,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:56,347 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:37:56,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:56,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:56,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:56,348 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) [2023-11-19 07:37:56,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:56,368 INFO L93 Difference]: Finished difference Result 116 states and 146 transitions. [2023-11-19 07:37:56,368 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 146 transitions. [2023-11-19 07:37:56,369 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2023-11-19 07:37:56,370 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 116 states and 146 transitions. [2023-11-19 07:37:56,371 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2023-11-19 07:37:56,371 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 64 [2023-11-19 07:37:56,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 146 transitions. [2023-11-19 07:37:56,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:37:56,371 INFO L218 hiAutomatonCegarLoop]: Abstraction has 116 states and 146 transitions. [2023-11-19 07:37:56,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states and 146 transitions. [2023-11-19 07:37:56,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-11-19 07:37:56,374 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) [2023-11-19 07:37:56,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2023-11-19 07:37:56,375 INFO L240 hiAutomatonCegarLoop]: Abstraction has 116 states and 146 transitions. [2023-11-19 07:37:56,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:56,375 INFO L428 stractBuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2023-11-19 07:37:56,376 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-19 07:37:56,376 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 146 transitions. [2023-11-19 07:37:56,377 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2023-11-19 07:37:56,377 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:37:56,377 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:37:56,377 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:56,378 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:56,378 INFO L748 eck$LassoCheckResult]: Stem: 2474#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;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); 2460#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;havoc main_#t~nondet4#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; 2461#$Ultimate##5 assume !false; 2441#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2442#L36 assume 8466 == main_~s__state~0#1; 2454#$Ultimate##17 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 2455#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 2508#$Ultimate##5 [2023-11-19 07:37:56,378 INFO L750 eck$LassoCheckResult]: Loop: 2508#$Ultimate##5 assume !false; 2551#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2549#L36 assume !(8466 == main_~s__state~0#1); 2547#L41 assume !(8512 == main_~s__state~0#1); 2477#L57 assume !(8640 == main_~s__state~0#1); 2478#L61 assume 8656 == main_~s__state~0#1; 2545#$Ultimate##31 assume !(2 == main_~blastFlag~0#1); 2456#L100-1 assume !(4 == main_~blastFlag~0#1); 2457#L107 assume !(5 == main_~blastFlag~0#1); 2554#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 2520#$Ultimate##5 assume !false; 2552#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2550#L36 assume !(8466 == main_~s__state~0#1); 2548#L41 assume !(8512 == main_~s__state~0#1); 2485#L57 assume 8640 == main_~s__state~0#1; 2486#$Ultimate##26 assume !(3 == main_~blastFlag~0#1); 2553#L89-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8656; 2508#$Ultimate##5 [2023-11-19 07:37:56,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:56,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 4 times [2023-11-19 07:37:56,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:56,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502071747] [2023-11-19 07:37:56,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:56,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:56,384 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:56,388 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:56,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:56,389 INFO L85 PathProgramCache]: Analyzing trace with hash 750960545, now seen corresponding path program 1 times [2023-11-19 07:37:56,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:56,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859931626] [2023-11-19 07:37:56,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:56,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:56,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:56,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859931626] [2023-11-19 07:37:56,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859931626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:56,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:56,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:37:56,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668979841] [2023-11-19 07:37:56,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:56,410 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:37:56,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:56,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:56,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:56,411 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) [2023-11-19 07:37:56,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:56,418 INFO L93 Difference]: Finished difference Result 142 states and 175 transitions. [2023-11-19 07:37:56,419 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142 states and 175 transitions. [2023-11-19 07:37:56,420 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2023-11-19 07:37:56,421 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142 states to 137 states and 167 transitions. [2023-11-19 07:37:56,421 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2023-11-19 07:37:56,421 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2023-11-19 07:37:56,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 137 states and 167 transitions. [2023-11-19 07:37:56,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:37:56,422 INFO L218 hiAutomatonCegarLoop]: Abstraction has 137 states and 167 transitions. [2023-11-19 07:37:56,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states and 167 transitions. [2023-11-19 07:37:56,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 109. [2023-11-19 07:37:56,424 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) [2023-11-19 07:37:56,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 136 transitions. [2023-11-19 07:37:56,425 INFO L240 hiAutomatonCegarLoop]: Abstraction has 109 states and 136 transitions. [2023-11-19 07:37:56,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:56,426 INFO L428 stractBuchiCegarLoop]: Abstraction has 109 states and 136 transitions. [2023-11-19 07:37:56,426 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-19 07:37:56,426 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 109 states and 136 transitions. [2023-11-19 07:37:56,427 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2023-11-19 07:37:56,427 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:37:56,428 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:37:56,428 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:56,428 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:56,428 INFO L748 eck$LassoCheckResult]: Stem: 2741#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;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); 2723#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;havoc main_#t~nondet4#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; 2724#$Ultimate##5 assume !false; 2786#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2787#L36 assume 8466 == main_~s__state~0#1; 2775#$Ultimate##17 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 2773#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 2713#$Ultimate##5 [2023-11-19 07:37:56,429 INFO L750 eck$LassoCheckResult]: Loop: 2713#$Ultimate##5 assume !false; 2703#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2704#L36 assume !(8466 == main_~s__state~0#1); 2725#L41 assume !(8512 == main_~s__state~0#1); 2735#L57 assume !(8640 == main_~s__state~0#1); 2711#L61 assume 8656 == main_~s__state~0#1; 2712#$Ultimate##31 assume !(2 == main_~blastFlag~0#1); 2719#L100-1 assume !(4 == main_~blastFlag~0#1); 2720#L107 assume !(5 == main_~blastFlag~0#1); 2742#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 2713#$Ultimate##5 [2023-11-19 07:37:56,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:56,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 5 times [2023-11-19 07:37:56,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:56,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90667312] [2023-11-19 07:37:56,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:56,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:56,434 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:56,439 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:56,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:56,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1947655960, now seen corresponding path program 1 times [2023-11-19 07:37:56,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:56,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662305240] [2023-11-19 07:37:56,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:56,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:56,444 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:56,447 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:56,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:56,448 INFO L85 PathProgramCache]: Analyzing trace with hash 163931656, now seen corresponding path program 1 times [2023-11-19 07:37:56,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:56,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072801264] [2023-11-19 07:37:56,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:56,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:56,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:56,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:56,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072801264] [2023-11-19 07:37:56,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072801264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:56,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:56,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:37:56,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035652950] [2023-11-19 07:37:56,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:56,523 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:37:56,523 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:37:56,524 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:37:56,524 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:37:56,524 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:37:56,524 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:56,524 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:37:56,524 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:37:56,524 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2023-11-19 07:37:56,524 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:37:56,525 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:37:56,526 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:56,535 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:56,538 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:56,623 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:37:56,623 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:37:56,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:56,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:56,624 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:56,627 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:56,627 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:56,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-19 07:37:56,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:56,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:56,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:56,674 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:56,682 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:37:56,682 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:56,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-19 07:37:56,714 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:37:56,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:56,732 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:37:56,733 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:37:56,733 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:37:56,733 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:37:56,733 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:37:56,733 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:56,733 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:37:56,733 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:37:56,733 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2023-11-19 07:37:56,733 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:37:56,733 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:37:56,734 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:56,740 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:56,744 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:56,822 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:37:56,822 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:37:56,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:56,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:56,828 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:56,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:56,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-19 07:37:56,865 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 [2023-11-19 07:37:56,878 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:56,879 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:56,879 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:56,879 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:37:56,879 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:56,880 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:37:56,880 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:56,890 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:37:56,894 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:37:56,895 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:37:56,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:56,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:56,898 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:56,903 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:37:56,903 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:37:56,903 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:37:56,903 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 [] [2023-11-19 07:37:56,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-19 07:37:56,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:56,923 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:37:56,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:56,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:37:56,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:56,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:37:56,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:57,004 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 [2023-11-19 07:37:57,004 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) [2023-11-19 07:37:57,032 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. [2023-11-19 07:37:57,032 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 [2023-11-19 07:37:57,033 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) [2023-11-19 07:37:57,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2023-11-19 07:37:57,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 10 letters. [2023-11-19 07:37:57,033 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:57,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 17 letters. Loop has 10 letters. [2023-11-19 07:37:57,033 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:57,034 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 20 letters. [2023-11-19 07:37:57,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:57,034 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 178 transitions. [2023-11-19 07:37:57,035 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2023-11-19 07:37:57,036 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 109 states and 132 transitions. [2023-11-19 07:37:57,036 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2023-11-19 07:37:57,036 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2023-11-19 07:37:57,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 109 states and 132 transitions. [2023-11-19 07:37:57,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:37:57,037 INFO L218 hiAutomatonCegarLoop]: Abstraction has 109 states and 132 transitions. [2023-11-19 07:37:57,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states and 132 transitions. [2023-11-19 07:37:57,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2023-11-19 07:37:57,039 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) [2023-11-19 07:37:57,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2023-11-19 07:37:57,040 INFO L240 hiAutomatonCegarLoop]: Abstraction has 109 states and 132 transitions. [2023-11-19 07:37:57,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:57,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:57,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:57,041 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) [2023-11-19 07:37:57,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:57,058 INFO L93 Difference]: Finished difference Result 92 states and 106 transitions. [2023-11-19 07:37:57,058 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92 states and 106 transitions. [2023-11-19 07:37:57,059 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2023-11-19 07:37:57,060 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92 states to 62 states and 71 transitions. [2023-11-19 07:37:57,060 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2023-11-19 07:37:57,061 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2023-11-19 07:37:57,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 71 transitions. [2023-11-19 07:37:57,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:37:57,061 INFO L218 hiAutomatonCegarLoop]: Abstraction has 62 states and 71 transitions. [2023-11-19 07:37:57,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 71 transitions. [2023-11-19 07:37:57,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-19 07:37:57,063 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) [2023-11-19 07:37:57,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2023-11-19 07:37:57,063 INFO L240 hiAutomatonCegarLoop]: Abstraction has 62 states and 71 transitions. [2023-11-19 07:37:57,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:57,065 INFO L428 stractBuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2023-11-19 07:37:57,065 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-19 07:37:57,065 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 62 states and 71 transitions. [2023-11-19 07:37:57,066 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2023-11-19 07:37:57,066 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:37:57,066 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:37:57,067 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:57,067 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:57,068 INFO L748 eck$LassoCheckResult]: Stem: 3269#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 3260#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;havoc main_#t~nondet4#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 3261#$Ultimate##5 assume !false; 3286#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3284#L36 assume 8466 == main_~s__state~0#1; 3283#$Ultimate##17 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 3282#L69-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 3280#$Ultimate##5 assume !false; 3276#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3274#L36 assume !(8466 == main_~s__state~0#1); 3272#L41 assume 8512 == main_~s__state~0#1; 3242#main_switch_1_8512#1 [2023-11-19 07:37:57,069 INFO L750 eck$LassoCheckResult]: Loop: 3242#main_switch_1_8512#1 havoc main_#t~nondet5#1;main_~tmp___1~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 3243#L81 assume 0 != main_~tmp___1~0#1;main_~s__state~0#1 := 8466; 3256#$Ultimate##5 assume !false; 3292#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3290#L36 assume 8466 == main_~s__state~0#1; 3250#$Ultimate##17 assume !(0 == main_~blastFlag~0#1); 3251#L69-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 3268#$Ultimate##5 assume !false; 3291#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3289#L36 assume !(8466 == main_~s__state~0#1); 3271#L41 assume 8512 == main_~s__state~0#1; 3242#main_switch_1_8512#1 [2023-11-19 07:37:57,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:57,069 INFO L85 PathProgramCache]: Analyzing trace with hash 21626939, now seen corresponding path program 1 times [2023-11-19 07:37:57,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:57,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104812705] [2023-11-19 07:37:57,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:57,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:57,083 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:57,088 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:57,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:57,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1294878776, now seen corresponding path program 1 times [2023-11-19 07:37:57,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:57,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060617505] [2023-11-19 07:37:57,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:57,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:57,093 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:57,096 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:57,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:57,096 INFO L85 PathProgramCache]: Analyzing trace with hash 937672638, now seen corresponding path program 1 times [2023-11-19 07:37:57,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:57,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024408860] [2023-11-19 07:37:57,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:57,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:57,108 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:57,114 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:57,353 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:57,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 07:37:57 BoogieIcfgContainer [2023-11-19 07:37:57,410 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-19 07:37:57,410 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:37:57,411 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:37:57,411 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:37:57,411 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:52" (3/4) ... [2023-11-19 07:37:57,413 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-19 07:37:57,451 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:37:57,451 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:37:57,452 INFO L158 Benchmark]: Toolchain (without parser) took 6248.91ms. Allocated memory was 157.3MB in the beginning and 190.8MB in the end (delta: 33.6MB). Free memory was 117.7MB in the beginning and 117.5MB in the end (delta: 191.0kB). Peak memory consumption was 36.9MB. Max. memory is 16.1GB. [2023-11-19 07:37:57,453 INFO L158 Benchmark]: CDTParser took 0.68ms. Allocated memory is still 157.3MB. Free memory is still 129.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:37:57,453 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.94ms. Allocated memory is still 157.3MB. Free memory was 117.2MB in the beginning and 106.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:37:57,453 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.63ms. Allocated memory is still 157.3MB. Free memory was 106.2MB in the beginning and 105.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:37:57,454 INFO L158 Benchmark]: Boogie Preprocessor took 24.29ms. Allocated memory is still 157.3MB. Free memory was 105.1MB in the beginning and 104.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:37:57,454 INFO L158 Benchmark]: RCFGBuilder took 479.77ms. Allocated memory is still 157.3MB. Free memory was 103.6MB in the beginning and 93.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:37:57,455 INFO L158 Benchmark]: BuchiAutomizer took 5404.47ms. Allocated memory was 157.3MB in the beginning and 190.8MB in the end (delta: 33.6MB). Free memory was 92.6MB in the beginning and 119.6MB in the end (delta: -27.1MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2023-11-19 07:37:57,455 INFO L158 Benchmark]: Witness Printer took 41.19ms. Allocated memory is still 190.8MB. Free memory was 119.6MB in the beginning and 117.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:37:57,457 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68ms. Allocated memory is still 157.3MB. Free memory is still 129.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.94ms. Allocated memory is still 157.3MB. Free memory was 117.2MB in the beginning and 106.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.63ms. Allocated memory is still 157.3MB. Free memory was 106.2MB in the beginning and 105.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.29ms. Allocated memory is still 157.3MB. Free memory was 105.1MB in the beginning and 104.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 479.77ms. Allocated memory is still 157.3MB. Free memory was 103.6MB in the beginning and 93.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 5404.47ms. Allocated memory was 157.3MB in the beginning and 190.8MB in the end (delta: 33.6MB). Free memory was 92.6MB in the beginning and 119.6MB in the end (delta: -27.1MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Witness Printer took 41.19ms. Allocated memory is still 190.8MB. Free memory was 119.6MB in the beginning and 117.5MB 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 5.2s and 10 iterations. TraceHistogramMax:2. Analysis of lassos took 3.7s. Construction of modules took 0.3s. Büchi inclusion checks took 0.9s. 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, 251 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 246 mSDsluCounter, 545 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 194 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 271 IncrementalHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 351 mSDtfsCounter, 271 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI4 SFLT1 conc0 concLT4 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp56 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq192 hnf89 smp100 dnf145 smp81 tf114 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 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! [2023-11-19 07:37:57,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:57,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57b92c5-2bb8-4dc1-9f25-6e341172fc19/bin/uautomizer-verify-uCwYo4JHxu/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)