./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 b5237d83 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_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/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_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:44:01,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:44:01,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:44:01,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:44:01,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:44:01,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:44:01,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:44:01,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:44:01,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:44:01,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:44:01,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:44:01,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:44:01,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:44:01,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:44:01,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:44:01,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:44:01,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:44:01,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:44:01,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:44:01,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:44:01,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:44:01,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:44:01,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:44:01,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:44:01,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:44:01,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:44:01,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:44:01,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:44:01,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:44:01,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:44:01,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:44:01,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:44:01,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:44:01,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:44:01,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:44:01,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:44:01,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:44:01,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:44:01,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:44:01,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:44:01,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:44:01,130 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-21 16:44:01,178 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:44:01,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:44:01,179 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:44:01,179 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:44:01,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:44:01,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:44:01,181 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:44:01,181 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-21 16:44:01,181 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-21 16:44:01,181 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-21 16:44:01,182 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-21 16:44:01,183 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-21 16:44:01,183 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-21 16:44:01,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:44:01,183 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:44:01,183 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:44:01,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:44:01,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:44:01,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:44:01,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-21 16:44:01,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-21 16:44:01,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-21 16:44:01,184 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:44:01,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:44:01,185 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-21 16:44:01,185 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:44:01,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-21 16:44:01,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:44:01,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:44:01,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:44:01,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:44:01,187 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-21 16:44:01,188 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db [2022-11-21 16:44:01,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:44:01,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:44:01,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:44:01,602 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:44:01,603 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:44:01,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2022-11-21 16:44:04,608 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:44:04,835 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:44:04,836 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2022-11-21 16:44:04,843 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/data/7b9e373ef/46dd6742c8614b3f90efd9eea6660590/FLAGf9c6e4cf0 [2022-11-21 16:44:04,860 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/data/7b9e373ef/46dd6742c8614b3f90efd9eea6660590 [2022-11-21 16:44:04,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:44:04,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:44:04,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:44:04,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:44:04,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:44:04,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:44:04" (1/1) ... [2022-11-21 16:44:04,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11088410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:44:04, skipping insertion in model container [2022-11-21 16:44:04,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:44:04" (1/1) ... [2022-11-21 16:44:04,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:44:04,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:44:05,099 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[8244,8257] [2022-11-21 16:44:05,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:44:05,114 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:44:05,138 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[8244,8257] [2022-11-21 16:44:05,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:44:05,159 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:44:05,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:44:05 WrapperNode [2022-11-21 16:44:05,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:44:05,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:44:05,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:44:05,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:44:05,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:44:05" (1/1) ... [2022-11-21 16:44:05,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:44:05" (1/1) ... [2022-11-21 16:44:05,202 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 73 [2022-11-21 16:44:05,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:44:05,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:44:05,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:44:05,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:44:05,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:44:05" (1/1) ... [2022-11-21 16:44:05,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:44:05" (1/1) ... [2022-11-21 16:44:05,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:44:05" (1/1) ... [2022-11-21 16:44:05,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:44:05" (1/1) ... [2022-11-21 16:44:05,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:44:05" (1/1) ... [2022-11-21 16:44:05,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:44:05" (1/1) ... [2022-11-21 16:44:05,235 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:44:05" (1/1) ... [2022-11-21 16:44:05,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:44:05" (1/1) ... [2022-11-21 16:44:05,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:44:05,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:44:05,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:44:05,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:44:05,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:44:05" (1/1) ... [2022-11-21 16:44:05,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:05,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:05,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:05,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-21 16:44:05,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:44:05,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:44:05,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:44:05,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:44:05,377 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:44:05,379 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:44:05,524 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:44:05,531 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:44:05,531 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 16:44:05,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:44:05 BoogieIcfgContainer [2022-11-21 16:44:05,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:44:05,535 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-21 16:44:05,536 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-21 16:44:05,541 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-21 16:44:05,542 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 16:44:05,542 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 04:44:04" (1/3) ... [2022-11-21 16:44:05,544 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f3d9b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 04:44:05, skipping insertion in model container [2022-11-21 16:44:05,544 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 16:44:05,544 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:44:05" (2/3) ... [2022-11-21 16:44:05,545 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f3d9b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 04:44:05, skipping insertion in model container [2022-11-21 16:44:05,545 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 16:44:05,545 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:44:05" (3/3) ... [2022-11-21 16:44:05,547 INFO L332 chiAutomizerObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2022-11-21 16:44:05,662 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-21 16:44:05,675 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-21 16:44:05,675 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-21 16:44:05,675 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-21 16:44:05,676 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-21 16:44:05,676 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-21 16:44:05,676 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-21 16:44:05,676 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-21 16:44:05,681 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:05,702 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-11-21 16:44:05,702 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 16:44:05,702 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 16:44:05,709 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-21 16:44:05,709 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-11-21 16:44:05,710 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-21 16:44:05,710 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:05,712 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-11-21 16:44:05,713 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 16:44:05,713 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 16:44:05,713 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-21 16:44:05,714 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-11-21 16:44:05,722 INFO L748 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 6#L111true [2022-11-21 16:44:05,722 INFO L750 eck$LassoCheckResult]: Loop: 6#L111true assume !false; 4#L30true assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 12#L36true assume 8466 == main_~s__state~0#1; 14#L37true assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 17#L69-1true assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 6#L111true [2022-11-21 16:44:05,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:05,729 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-21 16:44:05,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:05,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735852046] [2022-11-21 16:44:05,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:05,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:05,833 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:44:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:05,875 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:44:05,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:05,892 INFO L85 PathProgramCache]: Analyzing trace with hash 39284085, now seen corresponding path program 1 times [2022-11-21 16:44:05,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:05,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734966145] [2022-11-21 16:44:05,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:05,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:05,917 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:44:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:05,930 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:44:05,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:05,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723571, now seen corresponding path program 1 times [2022-11-21 16:44:05,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:05,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240303861] [2022-11-21 16:44:05,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:05,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:05,961 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:44:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:05,979 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:44:06,078 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 16:44:06,079 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 16:44:06,079 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 16:44:06,079 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 16:44:06,079 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 16:44:06,079 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:06,079 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 16:44:06,080 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 16:44:06,080 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2022-11-21 16:44:06,080 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 16:44:06,081 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 16:44:06,105 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:06,119 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:06,126 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:06,204 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 16:44:06,205 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 16:44:06,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:06,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:06,211 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:06,219 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 16:44:06,219 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 16:44:06,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-21 16:44:06,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:06,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:06,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:06,266 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:06,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-21 16:44:06,270 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 16:44:06,271 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 16:44:06,301 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 16:44:06,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:06,311 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 16:44:06,311 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 16:44:06,311 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 16:44:06,311 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 16:44:06,312 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 16:44:06,312 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:06,312 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 16:44:06,312 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 16:44:06,312 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2022-11-21 16:44:06,312 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 16:44:06,312 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 16:44:06,314 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:06,332 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:06,339 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:06,420 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 16:44:06,425 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 16:44:06,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:06,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:06,429 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:06,434 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 16:44:06,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-21 16:44:06,450 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 16:44:06,450 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 16:44:06,451 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 16:44:06,451 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 16:44:06,451 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 16:44:06,456 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 16:44:06,456 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 16:44:06,467 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 16:44:06,476 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 16:44:06,476 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-21 16:44:06,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:06,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:06,506 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:06,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-21 16:44:06,508 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 16:44:06,509 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 16:44:06,510 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 16:44:06,510 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~blastFlag~0#1) = -1*ULTIMATE.start_main_~blastFlag~0#1 + 1 Supporting invariants [] [2022-11-21 16:44:06,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:06,518 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 16:44:06,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:06,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:44:06,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 16:44:06,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:44:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:44:06,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:44:06,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:44:06,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:44:06,808 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-21 16:44:06,810 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:06,887 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 52 states and 84 transitions. Complement of second has 5 states. [2022-11-21 16:44:06,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-21 16:44:06,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:06,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2022-11-21 16:44:06,897 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 5 letters. [2022-11-21 16:44:06,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 16:44:06,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 7 letters. Loop has 5 letters. [2022-11-21 16:44:06,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 16:44:06,900 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 10 letters. [2022-11-21 16:44:06,900 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 16:44:06,901 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 84 transitions. [2022-11-21 16:44:06,904 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-11-21 16:44:06,908 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 38 states and 59 transitions. [2022-11-21 16:44:06,909 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2022-11-21 16:44:06,910 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2022-11-21 16:44:06,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 59 transitions. [2022-11-21 16:44:06,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 16:44:06,914 INFO L218 hiAutomatonCegarLoop]: Abstraction has 38 states and 59 transitions. [2022-11-21 16:44:06,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 59 transitions. [2022-11-21 16:44:06,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-11-21 16:44:06,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:06,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2022-11-21 16:44:06,944 INFO L240 hiAutomatonCegarLoop]: Abstraction has 36 states and 57 transitions. [2022-11-21 16:44:06,945 INFO L428 stractBuchiCegarLoop]: Abstraction has 36 states and 57 transitions. [2022-11-21 16:44:06,945 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-21 16:44:06,945 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 57 transitions. [2022-11-21 16:44:06,951 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-11-21 16:44:06,952 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 16:44:06,952 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 16:44:06,952 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-21 16:44:06,952 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-11-21 16:44:06,956 INFO L748 eck$LassoCheckResult]: Stem: 123#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 124#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 147#L111 assume !false; 119#L30 [2022-11-21 16:44:06,958 INFO L750 eck$LassoCheckResult]: Loop: 119#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 120#L36 assume 8466 == main_~s__state~0#1; 143#L37 assume !(0 == main_~blastFlag~0#1); 150#L69-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 129#L111 assume !false; 119#L30 [2022-11-21 16:44:06,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:06,961 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-11-21 16:44:06,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:06,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292997768] [2022-11-21 16:44:06,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:06,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:06,975 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:44:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:06,988 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:44:06,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:06,992 INFO L85 PathProgramCache]: Analyzing trace with hash 44013377, now seen corresponding path program 1 times [2022-11-21 16:44:06,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:06,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623374277] [2022-11-21 16:44:06,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:06,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:07,002 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:44:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:07,016 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:44:07,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:07,017 INFO L85 PathProgramCache]: Analyzing trace with hash 297857786, now seen corresponding path program 1 times [2022-11-21 16:44:07,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:07,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845088238] [2022-11-21 16:44:07,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:07,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:44:07,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:44:07,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:44:07,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845088238] [2022-11-21 16:44:07,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845088238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:44:07,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:44:07,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:44:07,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680315600] [2022-11-21 16:44:07,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:44:07,140 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 16:44:07,140 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 16:44:07,140 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 16:44:07,140 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 16:44:07,141 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 16:44:07,141 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:07,141 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 16:44:07,141 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 16:44:07,141 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2022-11-21 16:44:07,141 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 16:44:07,142 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 16:44:07,143 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:07,149 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:07,152 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:07,207 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 16:44:07,207 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 16:44:07,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:07,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:07,209 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:07,216 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 16:44:07,217 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 16:44:07,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-21 16:44:07,240 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 16:44:07,240 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~blastFlag~0#1=-1} Honda state: {ULTIMATE.start_main_~blastFlag~0#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 16:44:07,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:07,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:07,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:07,256 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:07,269 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 16:44:07,269 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 16:44:07,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-21 16:44:07,307 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 16:44:07,307 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0#1=0} Honda state: {ULTIMATE.start_main_~s__hit~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 16:44:07,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:07,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:07,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:07,318 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:07,327 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 16:44:07,327 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 16:44:07,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-21 16:44:07,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:07,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:07,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:07,358 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:07,367 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 16:44:07,367 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 16:44:07,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-21 16:44:07,407 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 16:44:07,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:07,416 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 16:44:07,416 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 16:44:07,416 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 16:44:07,416 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 16:44:07,417 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 16:44:07,417 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:07,417 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 16:44:07,417 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 16:44:07,417 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2022-11-21 16:44:07,417 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 16:44:07,417 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 16:44:07,418 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:07,427 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:07,433 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:07,495 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 16:44:07,496 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 16:44:07,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:07,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:07,497 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:07,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-21 16:44:07,512 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 16:44:07,524 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 16:44:07,524 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 16:44:07,525 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 16:44:07,525 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-21 16:44:07,525 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 16:44:07,526 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-21 16:44:07,526 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 16:44:07,543 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 16:44:07,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:07,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:07,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:07,553 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:07,569 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 16:44:07,582 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 16:44:07,582 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 16:44:07,582 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 16:44:07,583 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 16:44:07,583 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 16:44:07,583 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 16:44:07,584 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 16:44:07,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-21 16:44:07,607 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 16:44:07,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:07,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:07,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:07,617 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:07,621 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 16:44:07,634 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 16:44:07,634 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 16:44:07,634 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 16:44:07,634 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 16:44:07,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 16:44:07,636 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 16:44:07,636 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 16:44:07,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-21 16:44:07,646 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 16:44:07,649 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 16:44:07,649 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-21 16:44:07,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:07,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:07,651 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:07,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-21 16:44:07,654 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 16:44:07,654 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 16:44:07,654 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 16:44:07,654 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = -1*ULTIMATE.start_main_~s__state~0#1 + 8489 Supporting invariants [] [2022-11-21 16:44:07,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:07,660 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 16:44:07,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:44:07,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 16:44:07,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:44:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:44:07,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:44:07,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:44:07,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:44:07,738 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-21 16:44:07,739 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 57 transitions. cyclomatic complexity: 23 Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:07,827 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 57 transitions. cyclomatic complexity: 23. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 104 states and 155 transitions. Complement of second has 7 states. [2022-11-21 16:44:07,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-21 16:44:07,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:07,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2022-11-21 16:44:07,831 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 5 letters. [2022-11-21 16:44:07,832 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 16:44:07,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 8 letters. Loop has 5 letters. [2022-11-21 16:44:07,834 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 16:44:07,834 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 10 letters. [2022-11-21 16:44:07,836 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 16:44:07,836 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 155 transitions. [2022-11-21 16:44:07,841 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-11-21 16:44:07,845 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 77 states and 121 transitions. [2022-11-21 16:44:07,847 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2022-11-21 16:44:07,847 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2022-11-21 16:44:07,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 121 transitions. [2022-11-21 16:44:07,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 16:44:07,850 INFO L218 hiAutomatonCegarLoop]: Abstraction has 77 states and 121 transitions. [2022-11-21 16:44:07,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 121 transitions. [2022-11-21 16:44:07,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 54. [2022-11-21 16:44:07,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 53 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:07,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 86 transitions. [2022-11-21 16:44:07,862 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 86 transitions. [2022-11-21 16:44:07,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:44:07,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:44:07,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:44:07,868 INFO L87 Difference]: Start difference. First operand 54 states and 86 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:07,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:44:07,911 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2022-11-21 16:44:07,911 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 128 transitions. [2022-11-21 16:44:07,921 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2022-11-21 16:44:07,927 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 87 states and 125 transitions. [2022-11-21 16:44:07,929 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2022-11-21 16:44:07,929 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2022-11-21 16:44:07,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 125 transitions. [2022-11-21 16:44:07,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 16:44:07,931 INFO L218 hiAutomatonCegarLoop]: Abstraction has 87 states and 125 transitions. [2022-11-21 16:44:07,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 125 transitions. [2022-11-21 16:44:07,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2022-11-21 16:44:07,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 85 states have (on average 1.4470588235294117) internal successors, (123), 84 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:07,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 123 transitions. [2022-11-21 16:44:07,943 INFO L240 hiAutomatonCegarLoop]: Abstraction has 85 states and 123 transitions. [2022-11-21 16:44:07,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:44:07,945 INFO L428 stractBuchiCegarLoop]: Abstraction has 85 states and 123 transitions. [2022-11-21 16:44:07,946 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-21 16:44:07,946 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 85 states and 123 transitions. [2022-11-21 16:44:07,947 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2022-11-21 16:44:07,951 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 16:44:07,951 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 16:44:07,952 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-21 16:44:07,952 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-11-21 16:44:07,952 INFO L748 eck$LassoCheckResult]: Stem: 457#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 458#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 479#L111 assume !false; 453#L30 [2022-11-21 16:44:07,952 INFO L750 eck$LassoCheckResult]: Loop: 453#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 454#L36 assume !(8466 == main_~s__state~0#1); 476#L41 assume 8512 == main_~s__state~0#1; 480#L42 main_~tmp___1~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 474#L81 assume 0 != main_~tmp___1~0#1;main_~s__state~0#1 := 8466; 463#L111 assume !false; 453#L30 [2022-11-21 16:44:07,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:07,953 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 2 times [2022-11-21 16:44:07,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:07,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555701875] [2022-11-21 16:44:07,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:07,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:07,963 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:44:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:07,978 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:44:07,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:07,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1365729718, now seen corresponding path program 1 times [2022-11-21 16:44:07,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:07,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293541803] [2022-11-21 16:44:07,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:07,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:07,989 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:44:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:07,999 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:44:08,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:08,002 INFO L85 PathProgramCache]: Analyzing trace with hash 644971805, now seen corresponding path program 1 times [2022-11-21 16:44:08,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:08,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412260472] [2022-11-21 16:44:08,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:08,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:44:08,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:44:08,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:44:08,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412260472] [2022-11-21 16:44:08,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412260472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:44:08,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:44:08,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:44:08,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767478556] [2022-11-21 16:44:08,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:44:08,089 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 16:44:08,090 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 16:44:08,090 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 16:44:08,090 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 16:44:08,090 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 16:44:08,090 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:08,090 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 16:44:08,091 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 16:44:08,091 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2022-11-21 16:44:08,092 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 16:44:08,092 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 16:44:08,094 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:08,099 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:08,105 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:08,165 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 16:44:08,166 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 16:44:08,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:08,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:08,168 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:08,176 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 16:44:08,176 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 16:44:08,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-21 16:44:08,199 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 16:44:08,199 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~blastFlag~0#1=2} Honda state: {ULTIMATE.start_main_~blastFlag~0#1=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 16:44:08,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:08,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:08,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:08,210 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:08,218 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 16:44:08,218 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 16:44:08,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-21 16:44:08,247 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 16:44:08,247 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5#1=-4, ULTIMATE.start_main_~tmp___1~0#1=-4} Honda state: {ULTIMATE.start_main_#t~nondet5#1=-4, ULTIMATE.start_main_~tmp___1~0#1=-4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 16:44:08,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:08,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:08,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:08,258 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:08,268 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 16:44:08,268 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 16:44:08,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-21 16:44:08,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:08,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:08,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:08,301 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:08,305 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 16:44:08,306 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 16:44:08,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-21 16:44:08,333 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 16:44:08,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:08,342 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 16:44:08,342 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 16:44:08,342 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 16:44:08,342 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 16:44:08,343 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 16:44:08,343 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:08,343 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 16:44:08,343 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 16:44:08,343 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2022-11-21 16:44:08,343 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 16:44:08,343 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 16:44:08,344 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:08,352 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:08,355 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:08,411 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 16:44:08,411 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 16:44:08,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-11-21 16:44:08,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:08,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:08,436 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:08,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-21 16:44:08,449 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 16:44:08,459 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 16:44:08,460 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 16:44:08,460 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 16:44:08,460 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-21 16:44:08,460 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 16:44:08,462 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-21 16:44:08,462 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 16:44:08,479 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 16:44:08,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:08,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:08,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:08,490 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:08,498 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 16:44:08,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-21 16:44:08,511 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 16:44:08,511 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 16:44:08,511 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 16:44:08,511 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 16:44:08,511 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 16:44:08,514 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 16:44:08,514 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 16:44:08,523 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 16:44:08,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:08,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:08,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:08,532 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:08,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-21 16:44:08,544 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 16:44:08,556 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 16:44:08,557 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 16:44:08,557 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 16:44:08,557 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 16:44:08,557 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 16:44:08,558 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 16:44:08,558 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 16:44:08,568 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 16:44:08,571 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-21 16:44:08,571 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-21 16:44:08,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:08,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:08,588 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:08,596 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 16:44:08,596 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 16:44:08,596 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 16:44:08,597 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = 1*ULTIMATE.start_main_~s__state~0#1 Supporting invariants [] [2022-11-21 16:44:08,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-21 16:44:08,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:08,606 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 16:44:08,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:44:08,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 16:44:08,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:44:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:44:08,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:44:08,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:44:08,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:44:08,697 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-21 16:44:08,698 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 123 transitions. cyclomatic complexity: 44 Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:08,783 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 123 transitions. cyclomatic complexity: 44. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 170 states and 232 transitions. Complement of second has 9 states. [2022-11-21 16:44:08,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-21 16:44:08,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:08,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2022-11-21 16:44:08,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 6 letters. [2022-11-21 16:44:08,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 16:44:08,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 9 letters. Loop has 6 letters. [2022-11-21 16:44:08,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 16:44:08,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 12 letters. [2022-11-21 16:44:08,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 16:44:08,787 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 170 states and 232 transitions. [2022-11-21 16:44:08,789 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2022-11-21 16:44:08,790 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 170 states to 141 states and 196 transitions. [2022-11-21 16:44:08,790 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 47 [2022-11-21 16:44:08,791 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2022-11-21 16:44:08,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 196 transitions. [2022-11-21 16:44:08,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 16:44:08,791 INFO L218 hiAutomatonCegarLoop]: Abstraction has 141 states and 196 transitions. [2022-11-21 16:44:08,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states and 196 transitions. [2022-11-21 16:44:08,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 105. [2022-11-21 16:44:08,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 105 states have (on average 1.4095238095238096) internal successors, (148), 104 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:08,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 148 transitions. [2022-11-21 16:44:08,798 INFO L240 hiAutomatonCegarLoop]: Abstraction has 105 states and 148 transitions. [2022-11-21 16:44:08,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:44:08,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:44:08,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:44:08,799 INFO L87 Difference]: Start difference. First operand 105 states and 148 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:08,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:44:08,818 INFO L93 Difference]: Finished difference Result 65 states and 94 transitions. [2022-11-21 16:44:08,819 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 94 transitions. [2022-11-21 16:44:08,820 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2022-11-21 16:44:08,820 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 61 states and 90 transitions. [2022-11-21 16:44:08,820 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2022-11-21 16:44:08,821 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2022-11-21 16:44:08,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 90 transitions. [2022-11-21 16:44:08,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 16:44:08,821 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 90 transitions. [2022-11-21 16:44:08,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 90 transitions. [2022-11-21 16:44:08,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-21 16:44:08,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 60 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:08,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 90 transitions. [2022-11-21 16:44:08,825 INFO L240 hiAutomatonCegarLoop]: Abstraction has 61 states and 90 transitions. [2022-11-21 16:44:08,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:44:08,826 INFO L428 stractBuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2022-11-21 16:44:08,826 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-21 16:44:08,826 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 61 states and 90 transitions. [2022-11-21 16:44:08,827 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2022-11-21 16:44:08,827 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 16:44:08,827 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 16:44:08,828 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-21 16:44:08,828 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-11-21 16:44:08,828 INFO L748 eck$LassoCheckResult]: Stem: 938#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 939#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 944#L111 assume !false; 945#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 965#L36 assume 8466 == main_~s__state~0#1; 966#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 984#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 980#L111 assume !false; 979#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 977#L36 assume !(8466 == main_~s__state~0#1); 972#L41 [2022-11-21 16:44:08,828 INFO L750 eck$LassoCheckResult]: Loop: 972#L41 assume 8512 == main_~s__state~0#1; 967#L42 main_~tmp___1~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 958#L81 assume !(0 != main_~tmp___1~0#1);main_~s__state~0#1 := 8640; 960#L111 assume !false; 934#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 935#L36 assume !(8466 == main_~s__state~0#1); 972#L41 [2022-11-21 16:44:08,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:08,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1523382593, now seen corresponding path program 1 times [2022-11-21 16:44:08,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:08,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132590441] [2022-11-21 16:44:08,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:08,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:08,837 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:44:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:08,843 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:44:08,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:08,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1623382260, now seen corresponding path program 1 times [2022-11-21 16:44:08,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:08,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971762834] [2022-11-21 16:44:08,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:08,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:08,848 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:44:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:08,852 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:44:08,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:08,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1141286606, now seen corresponding path program 1 times [2022-11-21 16:44:08,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:08,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170781278] [2022-11-21 16:44:08,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:08,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:44:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:44:08,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:44:08,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170781278] [2022-11-21 16:44:08,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170781278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:44:08,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:44:08,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:44:08,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171200880] [2022-11-21 16:44:08,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:44:08,916 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 16:44:08,916 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 16:44:08,917 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 16:44:08,917 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 16:44:08,917 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 16:44:08,917 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:08,917 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 16:44:08,917 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 16:44:08,917 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2022-11-21 16:44:08,917 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 16:44:08,918 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 16:44:08,918 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:08,924 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:08,961 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 16:44:08,961 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 16:44:08,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:08,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:08,962 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:08,977 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 16:44:08,977 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 16:44:08,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-21 16:44:09,000 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 16:44:09,000 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5#1=0, ULTIMATE.start_main_~tmp___1~0#1=0} Honda state: {ULTIMATE.start_main_#t~nondet5#1=0, ULTIMATE.start_main_~tmp___1~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 16:44:09,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:09,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:09,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:09,018 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:09,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 16:44:09,022 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 16:44:09,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-21 16:44:09,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:09,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:09,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:09,063 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:09,066 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 16:44:09,066 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 16:44:09,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-21 16:44:09,089 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 16:44:09,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:09,093 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 16:44:09,093 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 16:44:09,093 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 16:44:09,093 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 16:44:09,094 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 16:44:09,094 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:09,094 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 16:44:09,094 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 16:44:09,094 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2022-11-21 16:44:09,094 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 16:44:09,094 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 16:44:09,095 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:09,101 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:09,140 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 16:44:09,140 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 16:44:09,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:09,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:09,141 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:09,145 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 16:44:09,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-21 16:44:09,155 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 16:44:09,156 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 16:44:09,156 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 16:44:09,156 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 16:44:09,156 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 16:44:09,157 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 16:44:09,157 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 16:44:09,169 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 16:44:09,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:09,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:09,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:09,176 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:09,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-21 16:44:09,181 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 16:44:09,192 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 16:44:09,192 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 16:44:09,192 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 16:44:09,192 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 16:44:09,192 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 16:44:09,193 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 16:44:09,194 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 16:44:09,201 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 16:44:09,206 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 16:44:09,207 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-21 16:44:09,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:09,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:09,220 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:09,222 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 16:44:09,222 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 16:44:09,222 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 16:44:09,222 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = -1*ULTIMATE.start_main_~s__state~0#1 + 8576 Supporting invariants [] [2022-11-21 16:44:09,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-21 16:44:09,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:09,231 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 16:44:09,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:44:09,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 16:44:09,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:44:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:44:09,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:44:09,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:44:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:44:09,317 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-21 16:44:09,317 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 61 states and 90 transitions. cyclomatic complexity: 33 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:09,385 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 61 states and 90 transitions. cyclomatic complexity: 33. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 183 states and 281 transitions. Complement of second has 9 states. [2022-11-21 16:44:09,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-21 16:44:09,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:09,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2022-11-21 16:44:09,387 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 6 letters. [2022-11-21 16:44:09,387 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 16:44:09,387 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 16 letters. Loop has 6 letters. [2022-11-21 16:44:09,387 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 16:44:09,388 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 12 letters. [2022-11-21 16:44:09,388 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 16:44:09,388 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 281 transitions. [2022-11-21 16:44:09,390 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2022-11-21 16:44:09,392 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 163 states and 245 transitions. [2022-11-21 16:44:09,392 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2022-11-21 16:44:09,392 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2022-11-21 16:44:09,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 163 states and 245 transitions. [2022-11-21 16:44:09,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 16:44:09,393 INFO L218 hiAutomatonCegarLoop]: Abstraction has 163 states and 245 transitions. [2022-11-21 16:44:09,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states and 245 transitions. [2022-11-21 16:44:09,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 125. [2022-11-21 16:44:09,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 125 states have (on average 1.464) internal successors, (183), 124 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:09,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 183 transitions. [2022-11-21 16:44:09,400 INFO L240 hiAutomatonCegarLoop]: Abstraction has 125 states and 183 transitions. [2022-11-21 16:44:09,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:44:09,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:44:09,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:44:09,401 INFO L87 Difference]: Start difference. First operand 125 states and 183 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:09,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:44:09,430 INFO L93 Difference]: Finished difference Result 164 states and 223 transitions. [2022-11-21 16:44:09,430 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 164 states and 223 transitions. [2022-11-21 16:44:09,432 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 36 [2022-11-21 16:44:09,433 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 164 states to 154 states and 211 transitions. [2022-11-21 16:44:09,433 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2022-11-21 16:44:09,434 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2022-11-21 16:44:09,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 154 states and 211 transitions. [2022-11-21 16:44:09,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 16:44:09,434 INFO L218 hiAutomatonCegarLoop]: Abstraction has 154 states and 211 transitions. [2022-11-21 16:44:09,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states and 211 transitions. [2022-11-21 16:44:09,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 134. [2022-11-21 16:44:09,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 134 states have (on average 1.4253731343283582) internal successors, (191), 133 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:09,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 191 transitions. [2022-11-21 16:44:09,440 INFO L240 hiAutomatonCegarLoop]: Abstraction has 134 states and 191 transitions. [2022-11-21 16:44:09,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:44:09,442 INFO L428 stractBuchiCegarLoop]: Abstraction has 134 states and 191 transitions. [2022-11-21 16:44:09,442 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-21 16:44:09,442 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 134 states and 191 transitions. [2022-11-21 16:44:09,443 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 35 [2022-11-21 16:44:09,443 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 16:44:09,443 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 16:44:09,444 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:44:09,444 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:44:09,444 INFO L748 eck$LassoCheckResult]: Stem: 1548#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 1549#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 1573#L111 assume !false; 1675#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1674#L36 assume 8466 == main_~s__state~0#1; 1643#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 1641#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1554#L111 [2022-11-21 16:44:09,445 INFO L750 eck$LassoCheckResult]: Loop: 1554#L111 assume !false; 1544#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1545#L36 assume !(8466 == main_~s__state~0#1); 1571#L41 assume !(8512 == main_~s__state~0#1); 1586#L57 assume !(8640 == main_~s__state~0#1); 1550#L61 assume 8656 == main_~s__state~0#1; 1551#L62 assume 2 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 3; 1560#L100-1 assume 4 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 5; 1562#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 1568#L111 assume !false; 1618#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1619#L36 assume 8466 == main_~s__state~0#1; 1576#L37 assume !(0 == main_~blastFlag~0#1); 1577#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1554#L111 [2022-11-21 16:44:09,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:09,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 1 times [2022-11-21 16:44:09,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:09,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903005065] [2022-11-21 16:44:09,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:09,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:09,451 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:44:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:09,456 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:44:09,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:09,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1982564596, now seen corresponding path program 1 times [2022-11-21 16:44:09,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:09,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091054997] [2022-11-21 16:44:09,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:09,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:44:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:44:09,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:44:09,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091054997] [2022-11-21 16:44:09,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091054997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:44:09,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:44:09,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:44:09,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319361187] [2022-11-21 16:44:09,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:44:09,481 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-21 16:44:09,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:44:09,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:44:09,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:44:09,482 INFO L87 Difference]: Start difference. First operand 134 states and 191 transitions. cyclomatic complexity: 65 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:09,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:44:09,507 INFO L93 Difference]: Finished difference Result 182 states and 254 transitions. [2022-11-21 16:44:09,508 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 254 transitions. [2022-11-21 16:44:09,509 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2022-11-21 16:44:09,511 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 182 states and 254 transitions. [2022-11-21 16:44:09,511 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 70 [2022-11-21 16:44:09,511 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 70 [2022-11-21 16:44:09,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 254 transitions. [2022-11-21 16:44:09,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 16:44:09,512 INFO L218 hiAutomatonCegarLoop]: Abstraction has 182 states and 254 transitions. [2022-11-21 16:44:09,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 254 transitions. [2022-11-21 16:44:09,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-11-21 16:44:09,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 182 states have (on average 1.3956043956043955) internal successors, (254), 181 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:09,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 254 transitions. [2022-11-21 16:44:09,518 INFO L240 hiAutomatonCegarLoop]: Abstraction has 182 states and 254 transitions. [2022-11-21 16:44:09,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:44:09,519 INFO L428 stractBuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2022-11-21 16:44:09,520 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-21 16:44:09,520 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 182 states and 254 transitions. [2022-11-21 16:44:09,521 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2022-11-21 16:44:09,521 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 16:44:09,521 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 16:44:09,522 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:44:09,522 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:44:09,522 INFO L748 eck$LassoCheckResult]: Stem: 1870#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 1871#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 1876#L111 assume !false; 1877#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1993#L36 assume 8466 == main_~s__state~0#1; 1990#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 1987#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1938#L111 [2022-11-21 16:44:09,522 INFO L750 eck$LassoCheckResult]: Loop: 1938#L111 assume !false; 1955#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1953#L36 assume !(8466 == main_~s__state~0#1); 1950#L41 assume !(8512 == main_~s__state~0#1); 1947#L57 assume !(8640 == main_~s__state~0#1); 1872#L61 assume 8656 == main_~s__state~0#1; 1873#L62 assume 2 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 3; 1879#L100-1 assume !(4 == main_~blastFlag~0#1); 1880#L107 assume !(5 == main_~blastFlag~0#1); 1917#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 1918#L111 assume !false; 1976#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1977#L36 assume 8466 == main_~s__state~0#1; 1963#L37 assume !(0 == main_~blastFlag~0#1); 1960#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1938#L111 [2022-11-21 16:44:09,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:09,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 2 times [2022-11-21 16:44:09,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:09,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086016027] [2022-11-21 16:44:09,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:09,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:09,529 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:44:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:09,534 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:44:09,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:09,535 INFO L85 PathProgramCache]: Analyzing trace with hash 862619384, now seen corresponding path program 1 times [2022-11-21 16:44:09,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:09,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629286980] [2022-11-21 16:44:09,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:09,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:44:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:44:09,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:44:09,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629286980] [2022-11-21 16:44:09,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629286980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:44:09,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:44:09,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:44:09,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594487452] [2022-11-21 16:44:09,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:44:09,581 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-21 16:44:09,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:44:09,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:44:09,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:44:09,581 INFO L87 Difference]: Start difference. First operand 182 states and 254 transitions. cyclomatic complexity: 80 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:09,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:44:09,626 INFO L93 Difference]: Finished difference Result 157 states and 202 transitions. [2022-11-21 16:44:09,626 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 157 states and 202 transitions. [2022-11-21 16:44:09,628 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2022-11-21 16:44:09,629 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 157 states to 111 states and 141 transitions. [2022-11-21 16:44:09,629 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 58 [2022-11-21 16:44:09,629 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2022-11-21 16:44:09,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 141 transitions. [2022-11-21 16:44:09,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 16:44:09,629 INFO L218 hiAutomatonCegarLoop]: Abstraction has 111 states and 141 transitions. [2022-11-21 16:44:09,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 141 transitions. [2022-11-21 16:44:09,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2022-11-21 16:44:09,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 105 states have (on average 1.276190476190476) internal successors, (134), 104 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:09,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 134 transitions. [2022-11-21 16:44:09,632 INFO L240 hiAutomatonCegarLoop]: Abstraction has 105 states and 134 transitions. [2022-11-21 16:44:09,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:44:09,633 INFO L428 stractBuchiCegarLoop]: Abstraction has 105 states and 134 transitions. [2022-11-21 16:44:09,634 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-21 16:44:09,634 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 105 states and 134 transitions. [2022-11-21 16:44:09,634 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2022-11-21 16:44:09,634 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 16:44:09,635 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 16:44:09,635 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:44:09,635 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:44:09,635 INFO L748 eck$LassoCheckResult]: Stem: 2211#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 2212#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 2229#L111 assume !false; 2296#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2231#L36 assume 8466 == main_~s__state~0#1; 2232#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 2263#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 2250#L111 [2022-11-21 16:44:09,635 INFO L750 eck$LassoCheckResult]: Loop: 2250#L111 assume !false; 2304#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2301#L36 assume !(8466 == main_~s__state~0#1); 2299#L41 assume !(8512 == main_~s__state~0#1); 2248#L57 assume !(8640 == main_~s__state~0#1); 2217#L61 assume 8656 == main_~s__state~0#1; 2218#L62 assume 2 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 3; 2223#L100-1 assume !(4 == main_~blastFlag~0#1); 2224#L107 assume !(5 == main_~blastFlag~0#1); 2239#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 2219#L111 assume !false; 2213#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2214#L36 assume !(8466 == main_~s__state~0#1); 2230#L41 assume !(8512 == main_~s__state~0#1); 2240#L57 assume 8640 == main_~s__state~0#1; 2298#L58 assume !(3 == main_~blastFlag~0#1); 2249#L89-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8656; 2250#L111 [2022-11-21 16:44:09,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:09,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 3 times [2022-11-21 16:44:09,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:09,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087195301] [2022-11-21 16:44:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:09,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:09,641 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:44:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:09,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:44:09,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:09,662 INFO L85 PathProgramCache]: Analyzing trace with hash 49895967, now seen corresponding path program 1 times [2022-11-21 16:44:09,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:09,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238504525] [2022-11-21 16:44:09,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:09,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:44:09,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:44:09,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:44:09,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238504525] [2022-11-21 16:44:09,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238504525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:44:09,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:44:09,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:44:09,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216424735] [2022-11-21 16:44:09,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:44:09,699 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-21 16:44:09,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:44:09,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:44:09,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:44:09,700 INFO L87 Difference]: Start difference. First operand 105 states and 134 transitions. cyclomatic complexity: 36 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:09,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:44:09,721 INFO L93 Difference]: Finished difference Result 116 states and 146 transitions. [2022-11-21 16:44:09,721 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 146 transitions. [2022-11-21 16:44:09,723 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2022-11-21 16:44:09,723 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 116 states and 146 transitions. [2022-11-21 16:44:09,724 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2022-11-21 16:44:09,724 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 64 [2022-11-21 16:44:09,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 146 transitions. [2022-11-21 16:44:09,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 16:44:09,725 INFO L218 hiAutomatonCegarLoop]: Abstraction has 116 states and 146 transitions. [2022-11-21 16:44:09,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states and 146 transitions. [2022-11-21 16:44:09,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:09,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2022-11-21 16:44:09,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-11-21 16:44:09,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 116 states have (on average 1.2586206896551724) internal successors, (146), 115 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:09,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2022-11-21 16:44:09,754 INFO L240 hiAutomatonCegarLoop]: Abstraction has 116 states and 146 transitions. [2022-11-21 16:44:09,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:44:09,755 INFO L428 stractBuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2022-11-21 16:44:09,755 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-21 16:44:09,755 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 146 transitions. [2022-11-21 16:44:09,756 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2022-11-21 16:44:09,756 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 16:44:09,756 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 16:44:09,757 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:44:09,757 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:44:09,757 INFO L748 eck$LassoCheckResult]: Stem: 2438#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 2439#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 2446#L111 assume !false; 2442#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2443#L36 assume 8466 == main_~s__state~0#1; 2459#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 2490#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 2476#L111 [2022-11-21 16:44:09,757 INFO L750 eck$LassoCheckResult]: Loop: 2476#L111 assume !false; 2440#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2441#L36 assume !(8466 == main_~s__state~0#1); 2458#L41 assume !(8512 == main_~s__state~0#1); 2468#L57 assume !(8640 == main_~s__state~0#1); 2474#L61 assume 8656 == main_~s__state~0#1; 2505#L62 assume !(2 == main_~blastFlag~0#1); 2452#L100-1 assume !(4 == main_~blastFlag~0#1); 2453#L107 assume !(5 == main_~blastFlag~0#1); 2467#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 2473#L111 assume !false; 2533#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2531#L36 assume !(8466 == main_~s__state~0#1); 2508#L41 assume !(8512 == main_~s__state~0#1); 2506#L57 assume 8640 == main_~s__state~0#1; 2507#L58 assume !(3 == main_~blastFlag~0#1); 2475#L89-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8656; 2476#L111 [2022-11-21 16:44:09,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:09,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 4 times [2022-11-21 16:44:09,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:09,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594223023] [2022-11-21 16:44:09,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:09,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:09,764 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:44:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:09,769 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:44:09,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:09,770 INFO L85 PathProgramCache]: Analyzing trace with hash 750960545, now seen corresponding path program 1 times [2022-11-21 16:44:09,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:09,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165508711] [2022-11-21 16:44:09,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:09,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:44:09,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:44:09,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:44:09,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165508711] [2022-11-21 16:44:09,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165508711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:44:09,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:44:09,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:44:09,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539510251] [2022-11-21 16:44:09,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:44:09,794 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-21 16:44:09,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:44:09,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:44:09,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:44:09,795 INFO L87 Difference]: Start difference. First operand 116 states and 146 transitions. cyclomatic complexity: 38 Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:09,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:44:09,803 INFO L93 Difference]: Finished difference Result 142 states and 175 transitions. [2022-11-21 16:44:09,803 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142 states and 175 transitions. [2022-11-21 16:44:09,804 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2022-11-21 16:44:09,805 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142 states to 137 states and 167 transitions. [2022-11-21 16:44:09,806 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2022-11-21 16:44:09,806 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2022-11-21 16:44:09,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 137 states and 167 transitions. [2022-11-21 16:44:09,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 16:44:09,806 INFO L218 hiAutomatonCegarLoop]: Abstraction has 137 states and 167 transitions. [2022-11-21 16:44:09,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states and 167 transitions. [2022-11-21 16:44:09,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 109. [2022-11-21 16:44:09,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 108 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:09,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 136 transitions. [2022-11-21 16:44:09,810 INFO L240 hiAutomatonCegarLoop]: Abstraction has 109 states and 136 transitions. [2022-11-21 16:44:09,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:44:09,811 INFO L428 stractBuchiCegarLoop]: Abstraction has 109 states and 136 transitions. [2022-11-21 16:44:09,811 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-11-21 16:44:09,811 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 109 states and 136 transitions. [2022-11-21 16:44:09,812 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2022-11-21 16:44:09,812 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 16:44:09,812 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 16:44:09,813 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:44:09,813 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:44:09,813 INFO L748 eck$LassoCheckResult]: Stem: 2702#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 2703#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 2722#L111 assume !false; 2793#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2792#L36 assume 8466 == main_~s__state~0#1; 2760#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 2757#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 2710#L111 [2022-11-21 16:44:09,813 INFO L750 eck$LassoCheckResult]: Loop: 2710#L111 assume !false; 2704#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2705#L36 assume !(8466 == main_~s__state~0#1); 2723#L41 assume !(8512 == main_~s__state~0#1); 2733#L57 assume !(8640 == main_~s__state~0#1); 2740#L61 assume 8656 == main_~s__state~0#1; 2805#L62 assume !(2 == main_~blastFlag~0#1); 2716#L100-1 assume !(4 == main_~blastFlag~0#1); 2717#L107 assume !(5 == main_~blastFlag~0#1); 2739#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 2710#L111 [2022-11-21 16:44:09,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:09,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 5 times [2022-11-21 16:44:09,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:09,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683797451] [2022-11-21 16:44:09,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:09,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:09,819 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:44:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:09,824 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:44:09,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:09,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1947655960, now seen corresponding path program 1 times [2022-11-21 16:44:09,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:09,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858848683] [2022-11-21 16:44:09,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:09,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:09,829 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:44:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:09,833 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:44:09,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:09,834 INFO L85 PathProgramCache]: Analyzing trace with hash 163931656, now seen corresponding path program 1 times [2022-11-21 16:44:09,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:09,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921574485] [2022-11-21 16:44:09,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:09,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:44:09,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:44:09,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:44:09,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921574485] [2022-11-21 16:44:09,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921574485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:44:09,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:44:09,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:44:09,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769941991] [2022-11-21 16:44:09,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:44:09,911 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 16:44:09,911 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 16:44:09,911 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 16:44:09,911 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 16:44:09,911 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 16:44:09,911 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:09,911 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 16:44:09,911 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 16:44:09,912 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2022-11-21 16:44:09,912 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 16:44:09,912 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 16:44:09,913 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:09,918 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:09,921 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:10,004 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 16:44:10,004 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 16:44:10,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:10,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:10,005 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:10,018 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 16:44:10,018 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 16:44:10,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-21 16:44:10,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-11-21 16:44:10,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:10,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:10,046 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:10,056 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 16:44:10,056 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 16:44:10,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-21 16:44:10,095 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 16:44:10,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:10,103 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 16:44:10,103 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 16:44:10,103 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 16:44:10,104 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 16:44:10,104 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 16:44:10,104 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:10,104 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 16:44:10,104 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 16:44:10,104 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2022-11-21 16:44:10,104 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 16:44:10,104 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 16:44:10,105 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:10,111 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:10,116 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 16:44:10,210 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 16:44:10,210 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 16:44:10,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:10,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:10,212 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:10,224 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 16:44:10,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-21 16:44:10,238 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 16:44:10,238 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 16:44:10,238 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 16:44:10,238 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 16:44:10,238 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 16:44:10,240 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 16:44:10,240 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 16:44:10,267 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 16:44:10,269 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-21 16:44:10,269 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-21 16:44:10,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:44:10,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:10,271 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:44:10,274 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 16:44:10,275 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 16:44:10,275 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 16:44:10,275 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = 1*ULTIMATE.start_main_~s__state~0#1 Supporting invariants [] [2022-11-21 16:44:10,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-21 16:44:10,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:10,284 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 16:44:10,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:44:10,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 16:44:10,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:44:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:44:10,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:44:10,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:44:10,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:44:10,367 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-21 16:44:10,368 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 109 states and 136 transitions. cyclomatic complexity: 36 Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:10,395 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 109 states and 136 transitions. cyclomatic complexity: 36. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 148 states and 178 transitions. Complement of second has 6 states. [2022-11-21 16:44:10,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-21 16:44:10,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:10,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2022-11-21 16:44:10,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 10 letters. [2022-11-21 16:44:10,397 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 16:44:10,397 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 17 letters. Loop has 10 letters. [2022-11-21 16:44:10,397 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 16:44:10,397 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 20 letters. [2022-11-21 16:44:10,397 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 16:44:10,397 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 178 transitions. [2022-11-21 16:44:10,398 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2022-11-21 16:44:10,399 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 109 states and 132 transitions. [2022-11-21 16:44:10,399 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2022-11-21 16:44:10,399 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2022-11-21 16:44:10,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 109 states and 132 transitions. [2022-11-21 16:44:10,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 16:44:10,400 INFO L218 hiAutomatonCegarLoop]: Abstraction has 109 states and 132 transitions. [2022-11-21 16:44:10,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states and 132 transitions. [2022-11-21 16:44:10,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2022-11-21 16:44:10,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 108 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:10,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2022-11-21 16:44:10,402 INFO L240 hiAutomatonCegarLoop]: Abstraction has 109 states and 132 transitions. [2022-11-21 16:44:10,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:44:10,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:44:10,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:44:10,403 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:10,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:44:10,415 INFO L93 Difference]: Finished difference Result 92 states and 106 transitions. [2022-11-21 16:44:10,415 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92 states and 106 transitions. [2022-11-21 16:44:10,416 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2022-11-21 16:44:10,416 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92 states to 62 states and 71 transitions. [2022-11-21 16:44:10,417 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2022-11-21 16:44:10,417 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2022-11-21 16:44:10,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 71 transitions. [2022-11-21 16:44:10,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 16:44:10,417 INFO L218 hiAutomatonCegarLoop]: Abstraction has 62 states and 71 transitions. [2022-11-21 16:44:10,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 71 transitions. [2022-11-21 16:44:10,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-21 16:44:10,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 61 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:10,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2022-11-21 16:44:10,419 INFO L240 hiAutomatonCegarLoop]: Abstraction has 62 states and 71 transitions. [2022-11-21 16:44:10,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:44:10,420 INFO L428 stractBuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2022-11-21 16:44:10,420 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-11-21 16:44:10,420 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 62 states and 71 transitions. [2022-11-21 16:44:10,420 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2022-11-21 16:44:10,420 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 16:44:10,420 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 16:44:10,421 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:44:10,421 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:44:10,421 INFO L748 eck$LassoCheckResult]: Stem: 3239#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 3240#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 3243#L111 assume !false; 3235#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3236#L36 assume 8466 == main_~s__state~0#1; 3260#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 3261#L69-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 3267#L111 assume !false; 3245#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3289#L36 assume !(8466 == main_~s__state~0#1); 3284#L41 assume 8512 == main_~s__state~0#1; 3258#L42 [2022-11-21 16:44:10,421 INFO L750 eck$LassoCheckResult]: Loop: 3258#L42 main_~tmp___1~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 3250#L81 assume 0 != main_~tmp___1~0#1;main_~s__state~0#1 := 8466; 3251#L111 assume !false; 3293#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3292#L36 assume 8466 == main_~s__state~0#1; 3287#L37 assume !(0 == main_~blastFlag~0#1); 3291#L69-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 3290#L111 assume !false; 3288#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3286#L36 assume !(8466 == main_~s__state~0#1); 3285#L41 assume 8512 == main_~s__state~0#1; 3258#L42 [2022-11-21 16:44:10,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:10,422 INFO L85 PathProgramCache]: Analyzing trace with hash 21626939, now seen corresponding path program 1 times [2022-11-21 16:44:10,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:10,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593781263] [2022-11-21 16:44:10,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:10,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:10,427 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:44:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:10,431 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:44:10,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:10,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1294878776, now seen corresponding path program 1 times [2022-11-21 16:44:10,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:10,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832839714] [2022-11-21 16:44:10,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:10,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:10,436 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:44:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:10,439 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:44:10,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:10,440 INFO L85 PathProgramCache]: Analyzing trace with hash 937672638, now seen corresponding path program 1 times [2022-11-21 16:44:10,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:10,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260946151] [2022-11-21 16:44:10,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:10,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:10,446 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:44:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:10,452 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:44:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:10,699 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:44:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:44:10,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.11 04:44:10 BoogieIcfgContainer [2022-11-21 16:44:10,740 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-21 16:44:10,741 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 16:44:10,741 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 16:44:10,741 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 16:44:10,742 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:44:05" (3/4) ... [2022-11-21 16:44:10,744 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-21 16:44:10,786 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 16:44:10,786 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 16:44:10,787 INFO L158 Benchmark]: Toolchain (without parser) took 5923.19ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 121.8MB in the beginning and 92.3MB in the end (delta: 29.4MB). Peak memory consumption was 61.6MB. Max. memory is 16.1GB. [2022-11-21 16:44:10,787 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 119.5MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:44:10,788 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.16ms. Allocated memory is still 161.5MB. Free memory was 121.8MB in the beginning and 125.9MB in the end (delta: -4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 16:44:10,788 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.47ms. Allocated memory is still 161.5MB. Free memory was 125.9MB in the beginning and 124.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:44:10,788 INFO L158 Benchmark]: Boogie Preprocessor took 34.59ms. Allocated memory is still 161.5MB. Free memory was 124.5MB in the beginning and 123.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:44:10,789 INFO L158 Benchmark]: RCFGBuilder took 295.38ms. Allocated memory is still 161.5MB. Free memory was 123.0MB in the beginning and 112.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 16:44:10,789 INFO L158 Benchmark]: BuchiAutomizer took 5204.79ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 112.5MB in the beginning and 94.4MB in the end (delta: 18.0MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2022-11-21 16:44:10,790 INFO L158 Benchmark]: Witness Printer took 45.98ms. Allocated memory is still 195.0MB. Free memory was 94.4MB in the beginning and 92.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:44:10,792 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 119.5MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.16ms. Allocated memory is still 161.5MB. Free memory was 121.8MB in the beginning and 125.9MB in the end (delta: -4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.47ms. Allocated memory is still 161.5MB. Free memory was 125.9MB in the beginning and 124.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.59ms. Allocated memory is still 161.5MB. Free memory was 124.5MB in the beginning and 123.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 295.38ms. Allocated memory is still 161.5MB. Free memory was 123.0MB in the beginning and 112.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 5204.79ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 112.5MB in the beginning and 94.4MB in the end (delta: 18.0MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * Witness Printer took 45.98ms. Allocated memory is still 195.0MB. Free memory was 94.4MB in the beginning and 92.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (8 trivial, 5 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * blastFlag + 1 and consists of 4 locations. One deterministic module has affine ranking function -1 * s__state + 8489 and consists of 4 locations. One deterministic module has affine ranking function s__state and consists of 5 locations. One deterministic module has affine ranking function 8576 + -1 * s__state and consists of 5 locations. One deterministic module has affine ranking function s__state and consists of 4 locations. 8 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 62 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.0s and 10 iterations. TraceHistogramMax:2. Analysis of lassos took 3.5s. Construction of modules took 0.2s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 13. Automata minimization 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 155 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 253 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 248 mSDsluCounter, 548 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 196 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 269 IncrementalHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 352 mSDtfsCounter, 269 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI4 SFLT1 conc0 concLT4 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp52 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq186 hnf91 smp100 dnf180 smp78 tf112 neg93 sie115 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 46ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 41]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L21] int s__state ; [L22] int s__hit = __VERIFIER_nondet_int() ; [L23] int blastFlag ; [L24] int tmp___1; [L26] s__state = 8466 [L27] blastFlag = 0 VAL [blastFlag=0, s__state=8466] [L29] COND TRUE 1 VAL [blastFlag=0, s__state=8466] [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) VAL [blastFlag=0, s__state=8466] [L36] COND TRUE s__state == 8466 VAL [blastFlag=0, s__state=8466] [L69] COND TRUE blastFlag == 0 [L70] blastFlag = 2 VAL [blastFlag=2, s__state=8466] [L72] COND FALSE !(\read(s__hit)) [L75] s__state = 8512 VAL [blastFlag=2, s__hit=0, s__state=8512] [L29] COND TRUE 1 VAL [blastFlag=2, s__hit=0, s__state=8512] [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) VAL [blastFlag=2, s__hit=0, s__state=8512] [L36] COND FALSE !(s__state == 8466) VAL [blastFlag=2, s__hit=0, s__state=8512] [L41] COND TRUE s__state == 8512 VAL [blastFlag=2, s__hit=0, s__state=8512] Loop: [L80] tmp___1 = __VERIFIER_nondet_int() [L81] COND TRUE \read(tmp___1) [L82] s__state = 8466 [L29] COND TRUE 1 [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L36] COND TRUE s__state == 8466 [L69] COND FALSE !(blastFlag == 0) [L72] COND FALSE !(\read(s__hit)) [L75] s__state = 8512 [L29] COND TRUE 1 [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L36] COND FALSE !(s__state == 8466) [L41] COND TRUE s__state == 8512 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 41]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L21] int s__state ; [L22] int s__hit = __VERIFIER_nondet_int() ; [L23] int blastFlag ; [L24] int tmp___1; [L26] s__state = 8466 [L27] blastFlag = 0 VAL [blastFlag=0, s__state=8466] [L29] COND TRUE 1 VAL [blastFlag=0, s__state=8466] [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) VAL [blastFlag=0, s__state=8466] [L36] COND TRUE s__state == 8466 VAL [blastFlag=0, s__state=8466] [L69] COND TRUE blastFlag == 0 [L70] blastFlag = 2 VAL [blastFlag=2, s__state=8466] [L72] COND FALSE !(\read(s__hit)) [L75] s__state = 8512 VAL [blastFlag=2, s__hit=0, s__state=8512] [L29] COND TRUE 1 VAL [blastFlag=2, s__hit=0, s__state=8512] [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) VAL [blastFlag=2, s__hit=0, s__state=8512] [L36] COND FALSE !(s__state == 8466) VAL [blastFlag=2, s__hit=0, s__state=8512] [L41] COND TRUE s__state == 8512 VAL [blastFlag=2, s__hit=0, s__state=8512] Loop: [L80] tmp___1 = __VERIFIER_nondet_int() [L81] COND TRUE \read(tmp___1) [L82] s__state = 8466 [L29] COND TRUE 1 [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L36] COND TRUE s__state == 8466 [L69] COND FALSE !(blastFlag == 0) [L72] COND FALSE !(\read(s__hit)) [L75] s__state = 8512 [L29] COND TRUE 1 [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L36] COND FALSE !(s__state == 8466) [L41] COND TRUE s__state == 8512 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-21 16:44:10,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:11,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6642934e-dfe1-4d7c-bde3-aa26ab5c44ee/bin/uautomizer-vX5HgA9Q3a/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)