./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Flip2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Flip2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 743a1142650cc90419737e0fcd83ae36167644025e705a99270cea90986dadac --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:33:48,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:33:48,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:33:48,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:33:48,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:33:48,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:33:48,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:33:48,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:33:48,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:33:48,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:33:48,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:33:48,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:33:48,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:33:48,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:33:48,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:33:48,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:33:48,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:33:48,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:33:48,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:33:48,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:33:48,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:33:48,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:33:48,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:33:48,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:33:48,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:33:48,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:33:48,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:33:48,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:33:48,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:33:48,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:33:48,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:33:48,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:33:48,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:33:48,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:33:48,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:33:48,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:33:48,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:33:48,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:33:48,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:33:48,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:33:48,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:33:48,290 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-18 20:33:48,340 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:33:48,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:33:48,342 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:33:48,342 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:33:48,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:33:48,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:33:48,344 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:33:48,345 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-18 20:33:48,345 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-18 20:33:48,345 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-18 20:33:48,347 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-18 20:33:48,347 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-18 20:33:48,347 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-18 20:33:48,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:33:48,348 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:33:48,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:33:48,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:33:48,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-18 20:33:48,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-18 20:33:48,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-18 20:33:48,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:33:48,350 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-18 20:33:48,350 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:33:48,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-18 20:33:48,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:33:48,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:33:48,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:33:48,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:33:48,355 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-18 20:33:48,355 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_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 743a1142650cc90419737e0fcd83ae36167644025e705a99270cea90986dadac [2022-11-18 20:33:48,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:33:48,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:33:48,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:33:48,776 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:33:48,777 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:33:48,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/termination-restricted-15/Flip2.c [2022-11-18 20:33:48,864 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/data/106b9d035/9024ecee41084e32bcef69f08a6c5b27/FLAG54358c1e4 [2022-11-18 20:33:49,392 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:33:49,393 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/sv-benchmarks/c/termination-restricted-15/Flip2.c [2022-11-18 20:33:49,400 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/data/106b9d035/9024ecee41084e32bcef69f08a6c5b27/FLAG54358c1e4 [2022-11-18 20:33:49,769 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/data/106b9d035/9024ecee41084e32bcef69f08a6c5b27 [2022-11-18 20:33:49,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:33:49,773 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:33:49,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:33:49,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:33:49,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:33:49,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:33:49" (1/1) ... [2022-11-18 20:33:49,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@729229f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:49, skipping insertion in model container [2022-11-18 20:33:49,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:33:49" (1/1) ... [2022-11-18 20:33:49,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:33:49,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:33:50,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:33:50,005 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:33:50,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:33:50,068 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:33:50,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:50 WrapperNode [2022-11-18 20:33:50,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:33:50,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:33:50,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:33:50,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:33:50,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:50" (1/1) ... [2022-11-18 20:33:50,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:50" (1/1) ... [2022-11-18 20:33:50,116 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2022-11-18 20:33:50,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:33:50,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:33:50,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:33:50,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:33:50,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:50" (1/1) ... [2022-11-18 20:33:50,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:50" (1/1) ... [2022-11-18 20:33:50,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:50" (1/1) ... [2022-11-18 20:33:50,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:50" (1/1) ... [2022-11-18 20:33:50,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:50" (1/1) ... [2022-11-18 20:33:50,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:50" (1/1) ... [2022-11-18 20:33:50,146 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:50" (1/1) ... [2022-11-18 20:33:50,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:50" (1/1) ... [2022-11-18 20:33:50,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:33:50,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:33:50,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:33:50,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:33:50,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:50" (1/1) ... [2022-11-18 20:33:50,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:50,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:50,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:50,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-18 20:33:50,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:33:50,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:33:50,328 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:33:50,330 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:33:50,408 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:33:50,417 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:33:50,417 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:33:50,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:33:50 BoogieIcfgContainer [2022-11-18 20:33:50,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:33:50,421 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-18 20:33:50,421 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-18 20:33:50,426 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-18 20:33:50,427 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 20:33:50,427 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 08:33:49" (1/3) ... [2022-11-18 20:33:50,428 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@138bb5f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 08:33:50, skipping insertion in model container [2022-11-18 20:33:50,428 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 20:33:50,429 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:50" (2/3) ... [2022-11-18 20:33:50,429 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@138bb5f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 08:33:50, skipping insertion in model container [2022-11-18 20:33:50,429 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 20:33:50,430 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:33:50" (3/3) ... [2022-11-18 20:33:50,431 INFO L332 chiAutomizerObserver]: Analyzing ICFG Flip2.c [2022-11-18 20:33:50,505 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-18 20:33:50,506 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-18 20:33:50,506 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-18 20:33:50,506 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-18 20:33:50,506 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-18 20:33:50,506 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-18 20:33:50,507 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-18 20:33:50,507 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-18 20:33:50,512 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:50,540 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-18 20:33:50,541 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:33:50,541 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:33:50,548 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-18 20:33:50,548 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-18 20:33:50,549 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-18 20:33:50,549 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:50,550 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-18 20:33:50,550 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:33:50,550 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:33:50,551 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-18 20:33:50,551 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-18 20:33:50,558 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 2#L19-2true [2022-11-18 20:33:50,558 INFO L750 eck$LassoCheckResult]: Loop: 2#L19-2true assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 9#L14true assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 2#L19-2true [2022-11-18 20:33:50,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:50,564 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-18 20:33:50,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:50,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120286192] [2022-11-18 20:33:50,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:50,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:50,668 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:33:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:50,691 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:33:50,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:50,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2022-11-18 20:33:50,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:50,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124231005] [2022-11-18 20:33:50,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:50,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:50,714 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:33:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:50,723 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:33:50,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:50,732 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-11-18 20:33:50,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:50,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034726365] [2022-11-18 20:33:50,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:50,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:50,761 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:33:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:50,785 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:33:51,047 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:33:51,048 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:33:51,048 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:33:51,048 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:33:51,048 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 20:33:51,049 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:51,049 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:33:51,049 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:33:51,049 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration1_Loop [2022-11-18 20:33:51,049 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:33:51,050 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:33:51,073 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:51,088 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:51,093 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:51,250 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:33:51,251 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 20:33:51,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:51,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:51,259 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:51,268 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:33:51,268 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:33:51,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-18 20:33:51,304 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:33:51,304 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:33:51,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:51,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:51,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:51,319 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:51,330 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:33:51,331 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:33:51,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-18 20:33:51,359 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:33:51,359 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:33:51,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:51,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:51,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:51,367 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:51,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-18 20:33:51,383 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:33:51,384 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:33:51,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:51,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:51,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:51,459 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:51,470 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 20:33:51,471 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:33:51,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-18 20:33:51,735 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 20:33:51,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:51,744 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:33:51,745 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:33:51,745 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:33:51,745 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:33:51,745 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 20:33:51,745 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:51,745 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:33:51,745 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:33:51,745 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration1_Loop [2022-11-18 20:33:51,746 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:33:51,746 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:33:51,749 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:51,759 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:51,772 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:51,884 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:33:51,890 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 20:33:51,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:51,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:51,897 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:51,907 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:33:51,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-18 20:33:51,924 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:33:51,925 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:33:51,925 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:33:51,925 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:33:51,935 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 20:33:51,936 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 20:33:51,972 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:33:51,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:51,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:51,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:51,997 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:52,001 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:33:52,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-18 20:33:52,015 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:33:52,015 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:33:52,015 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:33:52,015 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:33:52,019 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 20:33:52,019 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 20:33:52,048 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:33:52,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:52,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:52,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:52,055 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:52,066 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:33:52,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-18 20:33:52,082 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:33:52,083 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:33:52,083 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:33:52,084 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:33:52,084 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:33:52,091 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:33:52,091 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:33:52,112 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 20:33:52,118 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-18 20:33:52,118 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-18 20:33:52,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:52,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:52,127 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:52,140 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 20:33:52,140 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 20:33:52,141 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 20:33:52,141 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2022-11-18 20:33:52,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-18 20:33:52,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:52,150 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 20:33:52,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:52,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:33:52,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:52,223 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:33:52,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:52,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:52,320 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-18 20:33:52,323 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:52,403 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 31 states and 44 transitions. Complement of second has 8 states. [2022-11-18 20:33:52,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-18 20:33:52,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:52,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2022-11-18 20:33:52,419 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 2 letters. Loop has 2 letters. [2022-11-18 20:33:52,419 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:33:52,420 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-18 20:33:52,420 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:33:52,420 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 2 letters. Loop has 4 letters. [2022-11-18 20:33:52,421 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:33:52,422 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 44 transitions. [2022-11-18 20:33:52,429 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-11-18 20:33:52,434 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 14 states and 20 transitions. [2022-11-18 20:33:52,436 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-11-18 20:33:52,436 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-11-18 20:33:52,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2022-11-18 20:33:52,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:33:52,438 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2022-11-18 20:33:52,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2022-11-18 20:33:52,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-11-18 20:33:52,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:52,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2022-11-18 20:33:52,477 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-11-18 20:33:52,477 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-11-18 20:33:52,477 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-18 20:33:52,477 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2022-11-18 20:33:52,478 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-11-18 20:33:52,478 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:33:52,479 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:33:52,479 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-18 20:33:52,479 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-18 20:33:52,479 INFO L748 eck$LassoCheckResult]: Stem: 83#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 84#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 85#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 80#L14 [2022-11-18 20:33:52,480 INFO L750 eck$LassoCheckResult]: Loop: 80#L14 assume !(main_~i~0#1 < main_~j~0#1); 89#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 79#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 80#L14 [2022-11-18 20:33:52,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:52,480 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-11-18 20:33:52,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:52,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443920611] [2022-11-18 20:33:52,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:52,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:52,487 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:33:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:52,491 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:33:52,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:52,492 INFO L85 PathProgramCache]: Analyzing trace with hash 45829, now seen corresponding path program 1 times [2022-11-18 20:33:52,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:52,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514842095] [2022-11-18 20:33:52,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:52,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:52,500 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:33:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:52,505 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:33:52,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:52,506 INFO L85 PathProgramCache]: Analyzing trace with hash 889694462, now seen corresponding path program 1 times [2022-11-18 20:33:52,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:52,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006364467] [2022-11-18 20:33:52,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:52,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:52,514 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:33:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:52,521 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:33:52,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:52,603 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:33:52,603 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:33:52,604 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:33:52,604 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:33:52,604 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 20:33:52,604 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:52,604 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:33:52,604 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:33:52,605 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration2_Loop [2022-11-18 20:33:52,605 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:33:52,605 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:33:52,607 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:52,613 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:52,620 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:52,685 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:33:52,685 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 20:33:52,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:52,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:52,687 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:52,698 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:33:52,698 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:33:52,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-18 20:33:52,722 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:33:52,723 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:33:52,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:52,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:52,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:52,733 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:52,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-18 20:33:52,737 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:33:52,737 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:33:52,760 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:33:52,760 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:33:52,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:52,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:52,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:52,766 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:52,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-18 20:33:52,769 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:33:52,770 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:33:52,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:52,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:52,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:52,814 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:52,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-18 20:33:52,826 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 20:33:52,826 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:33:52,939 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 20:33:52,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:52,944 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:33:52,944 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:33:52,944 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:33:52,944 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:33:52,944 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 20:33:52,944 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:52,944 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:33:52,944 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:33:52,944 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration2_Loop [2022-11-18 20:33:52,944 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:33:52,945 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:33:52,946 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:52,951 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:52,955 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:53,024 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:33:53,024 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 20:33:53,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:53,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:53,026 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:53,036 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:33:53,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-18 20:33:53,047 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:33:53,048 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:33:53,048 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:33:53,048 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:33:53,051 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 20:33:53,051 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 20:33:53,088 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:33:53,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:53,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:53,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:53,102 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:53,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-18 20:33:53,113 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:33:53,127 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:33:53,127 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:33:53,127 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:33:53,128 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:33:53,133 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 20:33:53,133 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 20:33:53,156 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:33:53,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:53,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:53,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:53,172 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:53,181 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 [2022-11-18 20:33:53,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-18 20:33:53,195 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:33:53,195 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:33:53,195 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:33:53,196 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:33:53,196 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:33:53,197 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:33:53,197 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:33:53,207 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 20:33:53,213 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-11-18 20:33:53,213 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2022-11-18 20:33:53,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:53,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:53,214 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:53,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-18 20:33:53,218 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 20:33:53,218 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 20:33:53,218 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 20:33:53,218 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-11-18 20:33:53,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:53,229 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 20:33:53,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:53,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:33:53,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:53,282 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:33:53,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:53,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:53,333 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-18 20:33:53,333 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:53,380 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 35 states and 50 transitions. Complement of second has 7 states. [2022-11-18 20:33:53,381 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 [2022-11-18 20:33:53,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:53,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-11-18 20:33:53,383 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 3 letters. [2022-11-18 20:33:53,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:33:53,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2022-11-18 20:33:53,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:33:53,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 6 letters. [2022-11-18 20:33:53,385 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:33:53,385 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2022-11-18 20:33:53,386 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2022-11-18 20:33:53,387 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 31 states and 45 transitions. [2022-11-18 20:33:53,387 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2022-11-18 20:33:53,388 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2022-11-18 20:33:53,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 45 transitions. [2022-11-18 20:33:53,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:33:53,388 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31 states and 45 transitions. [2022-11-18 20:33:53,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 45 transitions. [2022-11-18 20:33:53,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2022-11-18 20:33:53,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.52) internal successors, (38), 24 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) [2022-11-18 20:33:53,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 38 transitions. [2022-11-18 20:33:53,393 INFO L240 hiAutomatonCegarLoop]: Abstraction has 25 states and 38 transitions. [2022-11-18 20:33:53,393 INFO L428 stractBuchiCegarLoop]: Abstraction has 25 states and 38 transitions. [2022-11-18 20:33:53,393 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-18 20:33:53,393 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 38 transitions. [2022-11-18 20:33:53,394 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2022-11-18 20:33:53,394 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:33:53,394 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:33:53,395 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-18 20:33:53,395 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-18 20:33:53,395 INFO L748 eck$LassoCheckResult]: Stem: 172#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 173#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 178#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 182#L14 assume !(main_~i~0#1 < main_~j~0#1); 174#L19 [2022-11-18 20:33:53,395 INFO L750 eck$LassoCheckResult]: Loop: 174#L19 assume main_~i~0#1 > main_~j~0#1;main_~j~0#1 := main_~i~0#1; 175#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 188#L14 assume !(main_~i~0#1 < main_~j~0#1); 174#L19 [2022-11-18 20:33:53,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:53,396 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-11-18 20:33:53,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:53,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098731707] [2022-11-18 20:33:53,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:53,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:53,402 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:33:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:53,406 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:33:53,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:53,407 INFO L85 PathProgramCache]: Analyzing trace with hash 48407, now seen corresponding path program 1 times [2022-11-18 20:33:53,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:53,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942810916] [2022-11-18 20:33:53,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:53,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:53,416 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:33:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:53,421 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:33:53,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:53,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722640, now seen corresponding path program 1 times [2022-11-18 20:33:53,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:53,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579656990] [2022-11-18 20:33:53,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:53,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:53,430 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:33:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:53,436 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:33:53,467 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:33:53,467 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:33:53,467 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:33:53,467 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:33:53,467 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 20:33:53,467 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:53,468 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:33:53,468 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:33:53,468 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration3_Loop [2022-11-18 20:33:53,468 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:33:53,468 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:33:53,469 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:53,487 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:53,491 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:53,564 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:33:53,564 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 20:33:53,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:53,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:53,573 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:53,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-18 20:33:53,588 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:33:53,588 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:33:53,628 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:33:53,628 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:33:53,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:53,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:53,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:53,640 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:53,654 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:33:53,654 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:33:53,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-18 20:33:53,684 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:33:53,684 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:33:53,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:53,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:53,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:53,694 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:53,711 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:33:53,712 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:33:53,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-18 20:33:53,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:53,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:53,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:53,742 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:53,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-18 20:33:53,745 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 20:33:53,745 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:33:53,912 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 20:33:53,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:53,917 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:33:53,917 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:33:53,917 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:33:53,917 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:33:53,917 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 20:33:53,917 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:53,917 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:33:53,917 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:33:53,917 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration3_Loop [2022-11-18 20:33:53,917 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:33:53,918 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:33:53,919 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:53,924 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:53,933 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:53,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2022-11-18 20:33:54,023 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:33:54,023 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 20:33:54,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:54,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:54,024 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:54,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-18 20:33:54,034 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:33:54,049 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:33:54,050 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:33:54,050 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:33:54,050 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:33:54,054 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 20:33:54,054 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 20:33:54,068 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:33:54,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:54,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:54,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:54,080 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:54,085 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:33:54,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-18 20:33:54,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:33:54,101 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:33:54,101 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:33:54,101 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:33:54,101 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:33:54,102 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:33:54,103 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:33:54,128 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 20:33:54,135 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-11-18 20:33:54,135 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-18 20:33:54,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:54,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:54,137 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:54,141 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 20:33:54,142 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 20:33:54,142 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 20:33:54,142 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2022-11-18 20:33:54,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-18 20:33:54,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:54,154 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 20:33:54,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:54,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:33:54,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:54,191 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:33:54,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:54,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:54,232 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-18 20:33:54,232 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 38 transitions. cyclomatic complexity: 19 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-11-18 20:33:54,256 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 38 transitions. cyclomatic complexity: 19. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 63 states and 92 transitions. Complement of second has 5 states. [2022-11-18 20:33:54,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-18 20:33:54,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-11-18 20:33:54,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2022-11-18 20:33:54,258 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2022-11-18 20:33:54,258 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:33:54,258 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2022-11-18 20:33:54,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:33:54,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 6 letters. [2022-11-18 20:33:54,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:33:54,259 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 92 transitions. [2022-11-18 20:33:54,261 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-11-18 20:33:54,262 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 56 states and 81 transitions. [2022-11-18 20:33:54,263 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2022-11-18 20:33:54,263 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2022-11-18 20:33:54,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 81 transitions. [2022-11-18 20:33:54,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:33:54,263 INFO L218 hiAutomatonCegarLoop]: Abstraction has 56 states and 81 transitions. [2022-11-18 20:33:54,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 81 transitions. [2022-11-18 20:33:54,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2022-11-18 20:33:54,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 41 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:54,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 61 transitions. [2022-11-18 20:33:54,269 INFO L240 hiAutomatonCegarLoop]: Abstraction has 42 states and 61 transitions. [2022-11-18 20:33:54,269 INFO L428 stractBuchiCegarLoop]: Abstraction has 42 states and 61 transitions. [2022-11-18 20:33:54,269 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-18 20:33:54,269 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 61 transitions. [2022-11-18 20:33:54,270 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-11-18 20:33:54,270 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:33:54,271 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:33:54,271 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2022-11-18 20:33:54,271 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-18 20:33:54,271 INFO L748 eck$LassoCheckResult]: Stem: 301#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 302#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 307#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 328#L14 assume !(main_~i~0#1 < main_~j~0#1); 303#L19 assume main_~i~0#1 > main_~j~0#1;main_~j~0#1 := main_~i~0#1; 304#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 316#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 313#L19-2 [2022-11-18 20:33:54,272 INFO L750 eck$LassoCheckResult]: Loop: 313#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 323#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 313#L19-2 [2022-11-18 20:33:54,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:54,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722638, now seen corresponding path program 1 times [2022-11-18 20:33:54,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:54,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912025909] [2022-11-18 20:33:54,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:54,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:54,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:54,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912025909] [2022-11-18 20:33:54,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912025909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:33:54,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:33:54,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:33:54,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202162231] [2022-11-18 20:33:54,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:33:54,339 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-18 20:33:54,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:54,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 2 times [2022-11-18 20:33:54,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:54,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778691006] [2022-11-18 20:33:54,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:54,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:54,346 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:33:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:54,351 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:33:54,394 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:33:54,394 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:33:54,394 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:33:54,395 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:33:54,395 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 20:33:54,395 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:54,395 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:33:54,395 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:33:54,395 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration4_Loop [2022-11-18 20:33:54,395 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:33:54,395 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:33:54,397 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:54,401 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:54,404 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:54,495 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:33:54,496 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 20:33:54,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:54,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:54,497 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:54,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-18 20:33:54,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:33:54,510 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:33:54,536 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:33:54,536 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:33:54,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:54,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:54,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:54,543 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:54,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-18 20:33:54,551 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:33:54,551 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:33:54,580 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:33:54,580 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:33:54,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:54,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:54,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:54,592 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:54,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-18 20:33:54,597 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:33:54,597 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:33:54,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:54,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:54,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:54,640 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:54,645 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 20:33:54,645 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:33:54,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-18 20:33:54,897 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 20:33:54,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-11-18 20:33:54,901 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:33:54,901 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:33:54,901 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:33:54,901 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:33:54,901 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 20:33:54,901 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:54,901 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:33:54,901 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:33:54,902 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration4_Loop [2022-11-18 20:33:54,902 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:33:54,902 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:33:54,903 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:54,922 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:54,928 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:54,996 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:33:54,996 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 20:33:54,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:54,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:54,998 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:55,007 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:33:55,022 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:33:55,023 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:33:55,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-18 20:33:55,023 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:33:55,023 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:33:55,023 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:33:55,026 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:33:55,026 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:33:55,044 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 20:33:55,049 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-18 20:33:55,050 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-18 20:33:55,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:55,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:55,054 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:55,056 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 20:33:55,056 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 20:33:55,056 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 20:33:55,056 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2022-11-18 20:33:55,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-18 20:33:55,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:55,067 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 20:33:55,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:55,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:33:55,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:55,131 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:33:55,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:55,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:55,151 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-18 20:33:55,151 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 61 transitions. cyclomatic complexity: 29 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) [2022-11-18 20:33:55,187 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 61 transitions. cyclomatic complexity: 29. 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) Result 74 states and 105 transitions. Complement of second has 7 states. [2022-11-18 20:33:55,188 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 [2022-11-18 20:33:55,189 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-11-18 20:33:55,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2022-11-18 20:33:55,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 7 letters. Loop has 2 letters. [2022-11-18 20:33:55,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:33:55,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 2 letters. [2022-11-18 20:33:55,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:33:55,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 7 letters. Loop has 4 letters. [2022-11-18 20:33:55,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:33:55,191 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 105 transitions. [2022-11-18 20:33:55,193 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2022-11-18 20:33:55,194 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 58 states and 84 transitions. [2022-11-18 20:33:55,194 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2022-11-18 20:33:55,194 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2022-11-18 20:33:55,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 84 transitions. [2022-11-18 20:33:55,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:33:55,195 INFO L218 hiAutomatonCegarLoop]: Abstraction has 58 states and 84 transitions. [2022-11-18 20:33:55,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 84 transitions. [2022-11-18 20:33:55,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 43. [2022-11-18 20:33:55,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 42 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:55,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 63 transitions. [2022-11-18 20:33:55,200 INFO L240 hiAutomatonCegarLoop]: Abstraction has 43 states and 63 transitions. [2022-11-18 20:33:55,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:55,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:33:55,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:33:55,214 INFO L87 Difference]: Start difference. First operand 43 states and 63 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2022-11-18 20:33:55,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:55,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:55,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:55,244 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2022-11-18 20:33:55,245 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 69 transitions. [2022-11-18 20:33:55,247 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2022-11-18 20:33:55,253 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 45 states and 62 transitions. [2022-11-18 20:33:55,253 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2022-11-18 20:33:55,253 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2022-11-18 20:33:55,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 62 transitions. [2022-11-18 20:33:55,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:33:55,254 INFO L218 hiAutomatonCegarLoop]: Abstraction has 45 states and 62 transitions. [2022-11-18 20:33:55,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 62 transitions. [2022-11-18 20:33:55,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2022-11-18 20:33:55,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 40 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:55,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2022-11-18 20:33:55,267 INFO L240 hiAutomatonCegarLoop]: Abstraction has 41 states and 58 transitions. [2022-11-18 20:33:55,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:33:55,273 INFO L428 stractBuchiCegarLoop]: Abstraction has 41 states and 58 transitions. [2022-11-18 20:33:55,273 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-18 20:33:55,273 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 58 transitions. [2022-11-18 20:33:55,274 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2022-11-18 20:33:55,274 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:33:55,275 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:33:55,275 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2022-11-18 20:33:55,275 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-18 20:33:55,275 INFO L748 eck$LassoCheckResult]: Stem: 559#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 560#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 564#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 570#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 594#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 565#L14 assume !(main_~i~0#1 < main_~j~0#1); 566#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 562#L19-2 [2022-11-18 20:33:55,276 INFO L750 eck$LassoCheckResult]: Loop: 562#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 593#L14 assume !(main_~i~0#1 < main_~j~0#1); 561#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 562#L19-2 [2022-11-18 20:33:55,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:55,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1810655530, now seen corresponding path program 1 times [2022-11-18 20:33:55,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:55,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886148246] [2022-11-18 20:33:55,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:55,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:55,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:55,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886148246] [2022-11-18 20:33:55,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886148246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:33:55,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:33:55,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:33:55,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335374133] [2022-11-18 20:33:55,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:33:55,384 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-18 20:33:55,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:55,385 INFO L85 PathProgramCache]: Analyzing trace with hash 40879, now seen corresponding path program 2 times [2022-11-18 20:33:55,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:55,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889884293] [2022-11-18 20:33:55,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:55,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:55,391 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:33:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:55,394 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:33:55,438 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:33:55,438 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:33:55,439 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:33:55,439 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:33:55,439 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 20:33:55,439 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:55,439 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:33:55,439 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:33:55,440 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration5_Loop [2022-11-18 20:33:55,440 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:33:55,440 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:33:55,441 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:55,454 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:55,460 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:55,534 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:33:55,534 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 20:33:55,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:55,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:55,536 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:55,549 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:33:55,549 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:33:55,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-18 20:33:55,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:55,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:55,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:55,579 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:55,593 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 20:33:55,593 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:33:55,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-18 20:33:55,713 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 20:33:55,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2022-11-18 20:33:55,717 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:33:55,717 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:33:55,717 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:33:55,718 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:33:55,718 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 20:33:55,718 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:55,718 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:33:55,718 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:33:55,718 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration5_Loop [2022-11-18 20:33:55,718 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:33:55,718 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:33:55,720 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:55,731 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:55,746 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:33:55,803 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:33:55,804 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 20:33:55,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:55,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:55,809 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:55,811 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:33:55,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-18 20:33:55,826 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:33:55,827 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:33:55,827 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:33:55,827 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:33:55,830 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 20:33:55,830 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 20:33:55,848 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:33:55,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:55,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:55,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:55,859 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:55,865 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:33:55,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-18 20:33:55,881 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:33:55,882 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:33:55,882 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:33:55,882 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:33:55,882 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:33:55,884 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:33:55,884 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:33:55,900 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 20:33:55,915 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2022-11-18 20:33:55,915 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2022-11-18 20:33:55,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:55,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:55,918 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:55,924 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 20:33:55,925 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 20:33:55,925 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 20:33:55,925 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-11-18 20:33:55,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-18 20:33:55,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:55,936 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 20:33:55,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:55,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:33:55,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:55,989 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:33:55,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:56,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:56,014 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-18 20:33:56,014 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 58 transitions. cyclomatic complexity: 25 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) [2022-11-18 20:33:56,038 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 58 transitions. cyclomatic complexity: 25. 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) Result 74 states and 102 transitions. Complement of second has 5 states. [2022-11-18 20:33:56,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-18 20:33:56,039 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-11-18 20:33:56,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2022-11-18 20:33:56,040 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2022-11-18 20:33:56,040 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:33:56,040 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 3 letters. [2022-11-18 20:33:56,040 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:33:56,040 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 6 letters. [2022-11-18 20:33:56,040 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:33:56,041 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 102 transitions. [2022-11-18 20:33:56,042 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2022-11-18 20:33:56,043 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 57 states and 79 transitions. [2022-11-18 20:33:56,043 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2022-11-18 20:33:56,043 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2022-11-18 20:33:56,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 79 transitions. [2022-11-18 20:33:56,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:33:56,044 INFO L218 hiAutomatonCegarLoop]: Abstraction has 57 states and 79 transitions. [2022-11-18 20:33:56,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 79 transitions. [2022-11-18 20:33:56,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2022-11-18 20:33:56,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 48 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:56,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 69 transitions. [2022-11-18 20:33:56,048 INFO L240 hiAutomatonCegarLoop]: Abstraction has 49 states and 69 transitions. [2022-11-18 20:33:56,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:56,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:33:56,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:33:56,049 INFO L87 Difference]: Start difference. First operand 49 states and 69 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2022-11-18 20:33:56,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:56,064 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2022-11-18 20:33:56,064 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 66 transitions. [2022-11-18 20:33:56,065 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-18 20:33:56,066 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 47 states and 61 transitions. [2022-11-18 20:33:56,066 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2022-11-18 20:33:56,066 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2022-11-18 20:33:56,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 61 transitions. [2022-11-18 20:33:56,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:33:56,067 INFO L218 hiAutomatonCegarLoop]: Abstraction has 47 states and 61 transitions. [2022-11-18 20:33:56,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 61 transitions. [2022-11-18 20:33:56,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2022-11-18 20:33:56,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2022-11-18 20:33:56,070 INFO L240 hiAutomatonCegarLoop]: Abstraction has 35 states and 47 transitions. [2022-11-18 20:33:56,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:33:56,072 INFO L428 stractBuchiCegarLoop]: Abstraction has 35 states and 47 transitions. [2022-11-18 20:33:56,072 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-18 20:33:56,072 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 47 transitions. [2022-11-18 20:33:56,073 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-18 20:33:56,073 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:33:56,073 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:33:56,073 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2022-11-18 20:33:56,073 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 1, 1, 1] [2022-11-18 20:33:56,074 INFO L748 eck$LassoCheckResult]: Stem: 823#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 824#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 825#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 834#L14 assume !(main_~i~0#1 < main_~j~0#1); 832#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 848#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 830#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 819#L19-2 [2022-11-18 20:33:56,074 INFO L750 eck$LassoCheckResult]: Loop: 819#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 820#L14 assume !(main_~i~0#1 < main_~j~0#1); 826#L19 assume main_~i~0#1 > main_~j~0#1;main_~j~0#1 := main_~i~0#1; 827#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 853#L14 assume !(main_~i~0#1 < main_~j~0#1); 850#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 851#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 852#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 819#L19-2 [2022-11-18 20:33:56,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:56,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724560, now seen corresponding path program 2 times [2022-11-18 20:33:56,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:56,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678973470] [2022-11-18 20:33:56,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:56,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:56,082 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:33:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:56,088 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:33:56,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:56,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2053356838, now seen corresponding path program 1 times [2022-11-18 20:33:56,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:56,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330313137] [2022-11-18 20:33:56,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:56,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:56,102 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:33:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:56,108 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:33:56,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:56,115 INFO L85 PathProgramCache]: Analyzing trace with hash 399570165, now seen corresponding path program 1 times [2022-11-18 20:33:56,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:56,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627382359] [2022-11-18 20:33:56,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:56,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:56,141 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:33:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:56,150 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:33:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:56,344 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:33:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:56,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 08:33:56 BoogieIcfgContainer [2022-11-18 20:33:56,380 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-18 20:33:56,381 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:33:56,381 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:33:56,381 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:33:56,382 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:33:50" (3/4) ... [2022-11-18 20:33:56,384 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-18 20:33:56,421 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:33:56,422 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:33:56,422 INFO L158 Benchmark]: Toolchain (without parser) took 6648.96ms. Allocated memory was 83.9MB in the beginning and 123.7MB in the end (delta: 39.8MB). Free memory was 46.8MB in the beginning and 53.8MB in the end (delta: -6.9MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. [2022-11-18 20:33:56,423 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 83.9MB. Free memory was 63.2MB in the beginning and 63.2MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:33:56,423 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.54ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 46.6MB in the beginning and 78.4MB in the end (delta: -31.7MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2022-11-18 20:33:56,424 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.08ms. Allocated memory is still 100.7MB. Free memory was 78.1MB in the beginning and 77.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:33:56,424 INFO L158 Benchmark]: Boogie Preprocessor took 31.50ms. Allocated memory is still 100.7MB. Free memory was 76.8MB in the beginning and 76.0MB in the end (delta: 842.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:33:56,425 INFO L158 Benchmark]: RCFGBuilder took 269.39ms. Allocated memory is still 100.7MB. Free memory was 75.7MB in the beginning and 67.6MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:33:56,425 INFO L158 Benchmark]: BuchiAutomizer took 5959.15ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 67.3MB in the beginning and 55.1MB in the end (delta: 12.3MB). Peak memory consumption was 37.8MB. Max. memory is 16.1GB. [2022-11-18 20:33:56,426 INFO L158 Benchmark]: Witness Printer took 41.11ms. Allocated memory is still 123.7MB. Free memory was 55.1MB in the beginning and 53.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:33:56,428 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 83.9MB. Free memory was 63.2MB in the beginning and 63.2MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.54ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 46.6MB in the beginning and 78.4MB in the end (delta: -31.7MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.08ms. Allocated memory is still 100.7MB. Free memory was 78.1MB in the beginning and 77.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.50ms. Allocated memory is still 100.7MB. Free memory was 76.8MB in the beginning and 76.0MB in the end (delta: 842.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 269.39ms. Allocated memory is still 100.7MB. Free memory was 75.7MB in the beginning and 67.6MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 5959.15ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 67.3MB in the beginning and 55.1MB in the end (delta: 12.3MB). Peak memory consumption was 37.8MB. Max. memory is 16.1GB. * Witness Printer took 41.11ms. Allocated memory is still 123.7MB. Free memory was 55.1MB in the beginning and 53.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (2 trivial, 5 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function j and consists of 5 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -1 * j + i and consists of 3 locations. One deterministic module has affine ranking function j and consists of 4 locations. One deterministic module has affine ranking function i and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 35 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.8s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 4.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 7. Automata minimization 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 60 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 81 IncrementalHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 39 mSDtfsCounter, 81 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax176 hnf100 lsp57 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq148 hnf92 smp100 dnf100 smp100 tf109 neg96 sie114 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 81ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] int j; [L8] int t; [L9] i = __VERIFIER_nondet_int() [L10] j = __VERIFIER_nondet_int() [L11] t = 0 VAL [t=0] [L13] COND TRUE i > 0 && j > 0 VAL [i=2, j=2, t=0] [L14] COND FALSE !(i < j) VAL [i=2, j=2, t=0] [L19] COND FALSE !(i > j) [L22] i = i-1 VAL [i=1, j=2, t=0] [L13] COND TRUE i > 0 && j > 0 VAL [i=1, j=2, t=0] [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t VAL [i=2, j=1, t=1] Loop: [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND TRUE i > j [L20] j = i [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND FALSE !(i > j) [L22] i = i-1 [L13] COND TRUE i > 0 && j > 0 [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] int t; [L9] i = __VERIFIER_nondet_int() [L10] j = __VERIFIER_nondet_int() [L11] t = 0 VAL [t=0] [L13] COND TRUE i > 0 && j > 0 VAL [i=2, j=2, t=0] [L14] COND FALSE !(i < j) VAL [i=2, j=2, t=0] [L19] COND FALSE !(i > j) [L22] i = i-1 VAL [i=1, j=2, t=0] [L13] COND TRUE i > 0 && j > 0 VAL [i=1, j=2, t=0] [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t VAL [i=2, j=1, t=1] Loop: [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND TRUE i > j [L20] j = i [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND FALSE !(i > j) [L22] i = i-1 [L13] COND TRUE i > 0 && j > 0 [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-18 20:33:56,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:56,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59629d88-1aef-4ee9-8eeb-4a77bcb95ee8/bin/uautomizer-TMbwUNV5ro/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)