./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe54aa6cbf5093caec91497905a5a8a5f126c540 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 14:39:59,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 14:39:59,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 14:40:00,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 14:40:00,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 14:40:00,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 14:40:00,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 14:40:00,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 14:40:00,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 14:40:00,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 14:40:00,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 14:40:00,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 14:40:00,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 14:40:00,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 14:40:00,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 14:40:00,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 14:40:00,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 14:40:00,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 14:40:00,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 14:40:00,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 14:40:00,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 14:40:00,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 14:40:00,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 14:40:00,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 14:40:00,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 14:40:00,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 14:40:00,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 14:40:00,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 14:40:00,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 14:40:00,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 14:40:00,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 14:40:00,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 14:40:00,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 14:40:00,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 14:40:00,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 14:40:00,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 14:40:00,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 14:40:00,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 14:40:00,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 14:40:00,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 14:40:00,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 14:40:00,080 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 14:40:00,115 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 14:40:00,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 14:40:00,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 14:40:00,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 14:40:00,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 14:40:00,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 14:40:00,119 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 14:40:00,120 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 14:40:00,120 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 14:40:00,120 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 14:40:00,121 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 14:40:00,121 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 14:40:00,121 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 14:40:00,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 14:40:00,122 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 14:40:00,122 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 14:40:00,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 14:40:00,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 14:40:00,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 14:40:00,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 14:40:00,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 14:40:00,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 14:40:00,123 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 14:40:00,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 14:40:00,124 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 14:40:00,124 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 14:40:00,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 14:40:00,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 14:40:00,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 14:40:00,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 14:40:00,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 14:40:00,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 14:40:00,126 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 14:40:00,127 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe54aa6cbf5093caec91497905a5a8a5f126c540 [2021-08-27 14:40:00,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 14:40:00,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 14:40:00,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 14:40:00,491 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 14:40:00,492 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 14:40:00,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-08-27 14:40:00,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e543edc51/6ba7de80815446b389798647ba01b5a1/FLAG508ad5cac [2021-08-27 14:40:01,068 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 14:40:01,069 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-08-27 14:40:01,079 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e543edc51/6ba7de80815446b389798647ba01b5a1/FLAG508ad5cac [2021-08-27 14:40:01,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e543edc51/6ba7de80815446b389798647ba01b5a1 [2021-08-27 14:40:01,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 14:40:01,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 14:40:01,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 14:40:01,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 14:40:01,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 14:40:01,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:40:01" (1/1) ... [2021-08-27 14:40:01,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c5179c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:40:01, skipping insertion in model container [2021-08-27 14:40:01,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:40:01" (1/1) ... [2021-08-27 14:40:01,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 14:40:01,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 14:40:01,651 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[7766,7779] [2021-08-27 14:40:01,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 14:40:01,663 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 14:40:01,704 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[7766,7779] [2021-08-27 14:40:01,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 14:40:01,724 INFO L208 MainTranslator]: Completed translation [2021-08-27 14:40:01,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:40:01 WrapperNode [2021-08-27 14:40:01,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 14:40:01,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 14:40:01,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 14:40:01,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 14:40:01,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:40:01" (1/1) ... [2021-08-27 14:40:01,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:40:01" (1/1) ... [2021-08-27 14:40:01,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 14:40:01,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 14:40:01,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 14:40:01,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 14:40:01,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:40:01" (1/1) ... [2021-08-27 14:40:01,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:40:01" (1/1) ... [2021-08-27 14:40:01,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:40:01" (1/1) ... [2021-08-27 14:40:01,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:40:01" (1/1) ... [2021-08-27 14:40:01,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:40:01" (1/1) ... [2021-08-27 14:40:01,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:40:01" (1/1) ... [2021-08-27 14:40:01,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:40:01" (1/1) ... [2021-08-27 14:40:01,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 14:40:01,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 14:40:01,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 14:40:01,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 14:40:01,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:40:01" (1/1) ... [2021-08-27 14:40:01,831 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:01,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:01,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:01,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 14:40:01,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 14:40:01,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 14:40:01,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 14:40:01,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 14:40:02,222 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 14:40:02,222 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 14:40:02,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:40:02 BoogieIcfgContainer [2021-08-27 14:40:02,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 14:40:02,225 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 14:40:02,225 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 14:40:02,227 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 14:40:02,228 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:40:02,228 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 02:40:01" (1/3) ... [2021-08-27 14:40:02,238 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6595f44f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 02:40:02, skipping insertion in model container [2021-08-27 14:40:02,239 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:40:02,239 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:40:01" (2/3) ... [2021-08-27 14:40:02,239 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6595f44f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 02:40:02, skipping insertion in model container [2021-08-27 14:40:02,239 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:40:02,239 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:40:02" (3/3) ... [2021-08-27 14:40:02,241 INFO L389 chiAutomizerObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2021-08-27 14:40:02,316 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 14:40:02,316 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 14:40:02,316 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 14:40:02,316 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 14:40:02,316 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 14:40:02,317 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 14:40:02,317 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 14:40:02,317 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 14:40:02,332 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:02,354 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-08-27 14:40:02,354 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:40:02,355 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:40:02,361 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-27 14:40:02,361 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-08-27 14:40:02,361 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 14:40:02,361 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:02,365 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-08-27 14:40:02,366 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:40:02,366 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:40:02,366 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-27 14:40:02,367 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-08-27 14:40:02,372 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 13#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 7#L101true [2021-08-27 14:40:02,374 INFO L793 eck$LassoCheckResult]: Loop: 7#L101true assume !false; 23#L20true assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 11#L26true assume 8466 == main_~s__state~0; 8#L27true assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 18#L59-1true assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 7#L101true [2021-08-27 14:40:02,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:02,383 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-08-27 14:40:02,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:02,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690488064] [2021-08-27 14:40:02,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:02,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:02,484 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:40:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:02,544 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:40:02,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:02,551 INFO L82 PathProgramCache]: Analyzing trace with hash 39284085, now seen corresponding path program 1 times [2021-08-27 14:40:02,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:02,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036982979] [2021-08-27 14:40:02,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:02,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:02,566 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:40:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:02,580 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:40:02,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:02,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1810723571, now seen corresponding path program 1 times [2021-08-27 14:40:02,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:02,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604441223] [2021-08-27 14:40:02,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:02,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:02,602 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:40:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:02,615 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:40:02,725 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:40:02,725 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:40:02,726 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:40:02,726 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:40:02,726 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:40:02,726 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:02,726 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:40:02,726 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:40:02,726 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2021-08-27 14:40:02,727 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:40:02,727 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:40:02,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:02,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:02,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:02,844 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:40:02,845 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:40:02,846 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:02,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:02,869 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:02,872 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:40:02,872 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:40:02,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-08-27 14:40:02,887 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:40:02,888 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0=0} Honda state: {ULTIMATE.start_main_~s__hit~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:40:02,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:02,914 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:02,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:02,915 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:02,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-08-27 14:40:02,924 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:40:02,924 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:40:02,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:02,980 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:02,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:02,985 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:02,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-08-27 14:40:02,988 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:40:02,988 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:40:03,017 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:40:03,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:03,040 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:40:03,040 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:40:03,040 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:40:03,040 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:40:03,040 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:40:03,040 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:03,040 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:40:03,040 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:40:03,040 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2021-08-27 14:40:03,040 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:40:03,041 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:40:03,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:03,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:03,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:03,167 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:40:03,171 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:40:03,172 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:03,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:03,177 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:03,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-08-27 14:40:03,181 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 [2021-08-27 14:40:03,188 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:40:03,188 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:40:03,188 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:40:03,189 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:40:03,189 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:40:03,191 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:40:03,191 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:40:03,205 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:40:03,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:03,231 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:03,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:03,233 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:03,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-08-27 14:40:03,237 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 [2021-08-27 14:40:03,244 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:40:03,244 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:40:03,244 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:40:03,244 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:40:03,244 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:40:03,247 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:40:03,247 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:40:03,261 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:40:03,265 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:40:03,265 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 14:40:03,267 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:03,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:03,268 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:03,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-08-27 14:40:03,271 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:40:03,271 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:40:03,271 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:40:03,272 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~blastFlag~0) = -1*ULTIMATE.start_main_~blastFlag~0 + 1 Supporting invariants [] [2021-08-27 14:40:03,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:03,302 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:40:03,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:40:03,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:40:03,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:40:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:40:03,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:40:03,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:40:03,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:40:03,521 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-27 14:40:03,523 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:03,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:03,639 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 52 states and 84 transitions. Complement of second has 5 states. [2021-08-27 14:40:03,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 14:40:03,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:03,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2021-08-27 14:40:03,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 5 letters. [2021-08-27 14:40:03,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:40:03,646 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 7 letters. Loop has 5 letters. [2021-08-27 14:40:03,646 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:40:03,647 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 10 letters. [2021-08-27 14:40:03,647 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:40:03,648 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 84 transitions. [2021-08-27 14:40:03,651 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-08-27 14:40:03,655 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 38 states and 59 transitions. [2021-08-27 14:40:03,656 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-08-27 14:40:03,656 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-08-27 14:40:03,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 59 transitions. [2021-08-27 14:40:03,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:40:03,657 INFO L681 BuchiCegarLoop]: Abstraction has 38 states and 59 transitions. [2021-08-27 14:40:03,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 59 transitions. [2021-08-27 14:40:03,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-08-27 14:40:03,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:03,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2021-08-27 14:40:03,679 INFO L704 BuchiCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-08-27 14:40:03,679 INFO L587 BuchiCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-08-27 14:40:03,679 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 14:40:03,679 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 57 transitions. [2021-08-27 14:40:03,680 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-08-27 14:40:03,680 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:40:03,680 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:40:03,680 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-08-27 14:40:03,681 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-08-27 14:40:03,681 INFO L791 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 127#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 153#L101 assume !false; 129#L20 [2021-08-27 14:40:03,681 INFO L793 eck$LassoCheckResult]: Loop: 129#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 141#L26 assume 8466 == main_~s__state~0; 132#L27 assume !(0 == main_~blastFlag~0); 133#L59-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 128#L101 assume !false; 129#L20 [2021-08-27 14:40:03,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:03,681 INFO L82 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-08-27 14:40:03,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:03,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890622985] [2021-08-27 14:40:03,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:03,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:03,691 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:40:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:03,701 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:40:03,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:03,702 INFO L82 PathProgramCache]: Analyzing trace with hash 44013377, now seen corresponding path program 1 times [2021-08-27 14:40:03,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:03,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062428951] [2021-08-27 14:40:03,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:03,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:03,706 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:40:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:03,710 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:40:03,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:03,711 INFO L82 PathProgramCache]: Analyzing trace with hash 297857786, now seen corresponding path program 1 times [2021-08-27 14:40:03,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:03,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534190651] [2021-08-27 14:40:03,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:03,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:40:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:40:03,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:40:03,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534190651] [2021-08-27 14:40:03,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534190651] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 14:40:03,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 14:40:03,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 14:40:03,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022955361] [2021-08-27 14:40:03,848 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:40:03,849 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:40:03,849 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:40:03,849 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:40:03,850 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:40:03,850 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:03,851 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:40:03,851 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:40:03,852 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2021-08-27 14:40:03,852 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:40:03,852 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:40:03,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:03,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:03,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:03,973 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:40:03,973 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:40:03,973 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:03,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:03,974 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:03,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-08-27 14:40:03,985 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:40:03,985 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:40:04,008 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:40:04,009 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0=0} Honda state: {ULTIMATE.start_main_~s__hit~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:40:04,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:04,036 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:04,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:04,037 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:04,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-08-27 14:40:04,039 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:40:04,040 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:40:04,051 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:40:04,051 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~blastFlag~0=-1} Honda state: {ULTIMATE.start_main_~blastFlag~0=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:40:04,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:04,069 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:04,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:04,070 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:04,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-08-27 14:40:04,073 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:40:04,073 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:40:04,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:04,100 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:04,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:04,101 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:04,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-08-27 14:40:04,105 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:40:04,105 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:40:04,116 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:40:04,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:04,132 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:40:04,133 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:40:04,133 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:40:04,133 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:40:04,133 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:40:04,133 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:04,133 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:40:04,133 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:40:04,133 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2021-08-27 14:40:04,133 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:40:04,133 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:40:04,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:04,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:04,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:04,261 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:40:04,261 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:40:04,262 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:04,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:04,265 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:04,274 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 [2021-08-27 14:40:04,282 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:40:04,283 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:40:04,283 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:40:04,283 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:40:04,283 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:40:04,284 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:40:04,284 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:40:04,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-08-27 14:40:04,296 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:40:04,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:04,325 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:04,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:04,326 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:04,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-08-27 14:40:04,329 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 [2021-08-27 14:40:04,336 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:40:04,337 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:40:04,337 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:40:04,337 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-08-27 14:40:04,337 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:40:04,338 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-08-27 14:40:04,338 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:40:04,353 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:40:04,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:04,380 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:04,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:04,381 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:04,392 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 [2021-08-27 14:40:04,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-08-27 14:40:04,398 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:40:04,399 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:40:04,399 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:40:04,399 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:40:04,399 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:40:04,400 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:40:04,400 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:40:04,428 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:40:04,431 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:40:04,431 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 14:40:04,432 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:04,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:04,433 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:04,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-08-27 14:40:04,435 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:40:04,435 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:40:04,436 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:40:04,436 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = -1*ULTIMATE.start_main_~s__state~0 + 8489 Supporting invariants [] [2021-08-27 14:40:04,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:04,464 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:40:04,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:40:04,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:40:04,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:40:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:40:04,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:40:04,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:40:04,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:40:04,633 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-08-27 14:40:04,634 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 57 transitions. cyclomatic complexity: 23 Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:04,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:04,684 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 57 transitions. cyclomatic complexity: 23. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 104 states and 155 transitions. Complement of second has 7 states. [2021-08-27 14:40:04,685 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 [2021-08-27 14:40:04,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:04,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2021-08-27 14:40:04,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 5 letters. [2021-08-27 14:40:04,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:40:04,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 8 letters. Loop has 5 letters. [2021-08-27 14:40:04,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:40:04,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 10 letters. [2021-08-27 14:40:04,687 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:40:04,687 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 155 transitions. [2021-08-27 14:40:04,689 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-08-27 14:40:04,691 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 77 states and 121 transitions. [2021-08-27 14:40:04,691 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-08-27 14:40:04,691 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-08-27 14:40:04,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 121 transitions. [2021-08-27 14:40:04,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:40:04,691 INFO L681 BuchiCegarLoop]: Abstraction has 77 states and 121 transitions. [2021-08-27 14:40:04,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 121 transitions. [2021-08-27 14:40:04,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 54. [2021-08-27 14:40:04,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 53 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:04,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 86 transitions. [2021-08-27 14:40:04,696 INFO L704 BuchiCegarLoop]: Abstraction has 54 states and 86 transitions. [2021-08-27 14:40:04,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:40:04,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 14:40:04,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 14:40:04,699 INFO L87 Difference]: Start difference. First operand 54 states and 86 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:04,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:40:04,725 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2021-08-27 14:40:04,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 14:40:04,726 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 128 transitions. [2021-08-27 14:40:04,728 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-08-27 14:40:04,729 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 87 states and 125 transitions. [2021-08-27 14:40:04,729 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2021-08-27 14:40:04,730 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2021-08-27 14:40:04,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 125 transitions. [2021-08-27 14:40:04,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:40:04,730 INFO L681 BuchiCegarLoop]: Abstraction has 87 states and 125 transitions. [2021-08-27 14:40:04,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 125 transitions. [2021-08-27 14:40:04,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2021-08-27 14:40:04,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 85 states have (on average 1.4470588235294117) internal successors, (123), 84 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:04,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 123 transitions. [2021-08-27 14:40:04,735 INFO L704 BuchiCegarLoop]: Abstraction has 85 states and 123 transitions. [2021-08-27 14:40:04,736 INFO L587 BuchiCegarLoop]: Abstraction has 85 states and 123 transitions. [2021-08-27 14:40:04,736 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 14:40:04,736 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 85 states and 123 transitions. [2021-08-27 14:40:04,737 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-08-27 14:40:04,737 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:40:04,737 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:40:04,738 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-08-27 14:40:04,738 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-08-27 14:40:04,738 INFO L791 eck$LassoCheckResult]: Stem: 461#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 462#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 488#L101 assume !false; 464#L20 [2021-08-27 14:40:04,738 INFO L793 eck$LassoCheckResult]: Loop: 464#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 476#L26 assume !(8466 == main_~s__state~0); 477#L31 assume 8512 == main_~s__state~0; 480#L32 main_~tmp___1~0 := main_#t~nondet8;havoc main_#t~nondet8; 474#L71 assume 0 != main_~tmp___1~0;main_~s__state~0 := 8466; 463#L101 assume !false; 464#L20 [2021-08-27 14:40:04,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:04,738 INFO L82 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 2 times [2021-08-27 14:40:04,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:04,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30853608] [2021-08-27 14:40:04,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:04,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:04,746 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:40:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:04,753 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:40:04,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:04,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1365729718, now seen corresponding path program 1 times [2021-08-27 14:40:04,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:04,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574893437] [2021-08-27 14:40:04,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:04,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:04,757 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:40:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:04,760 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:40:04,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:04,760 INFO L82 PathProgramCache]: Analyzing trace with hash 644971805, now seen corresponding path program 1 times [2021-08-27 14:40:04,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:04,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287577126] [2021-08-27 14:40:04,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:04,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:40:04,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:40:04,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:40:04,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287577126] [2021-08-27 14:40:04,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287577126] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 14:40:04,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 14:40:04,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 14:40:04,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281246983] [2021-08-27 14:40:04,848 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:40:04,848 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:40:04,848 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:40:04,848 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:40:04,848 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:40:04,849 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:04,849 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:40:04,849 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:40:04,849 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2021-08-27 14:40:04,849 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:40:04,850 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:40:04,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:04,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:04,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:04,922 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:40:04,922 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:40:04,922 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:04,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:04,929 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:04,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-08-27 14:40:04,933 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:40:04,934 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:40:04,951 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:40:04,951 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet8=-1, ULTIMATE.start_main_~tmp___1~0=-1} Honda state: {ULTIMATE.start_main_#t~nondet8=-1, ULTIMATE.start_main_~tmp___1~0=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:40:04,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:04,975 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:04,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:04,978 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:04,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-08-27 14:40:04,982 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:40:04,982 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:40:05,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:05,015 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:05,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:05,016 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:05,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-08-27 14:40:05,018 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:40:05,018 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:40:05,032 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:40:05,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:05,049 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:40:05,049 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:40:05,049 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:40:05,050 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:40:05,050 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:40:05,050 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:05,050 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:40:05,050 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:40:05,050 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2021-08-27 14:40:05,050 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:40:05,050 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:40:05,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:05,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:05,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:05,121 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:40:05,121 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:40:05,122 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:05,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:05,123 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:05,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-08-27 14:40:05,125 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 [2021-08-27 14:40:05,134 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:40:05,134 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:40:05,134 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:40:05,134 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-08-27 14:40:05,134 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:40:05,137 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-08-27 14:40:05,137 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:40:05,150 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:40:05,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:05,177 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:05,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:05,178 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:05,188 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 [2021-08-27 14:40:05,196 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:40:05,196 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:40:05,196 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:40:05,196 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:40:05,196 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:40:05,198 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:40:05,198 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:40:05,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-08-27 14:40:05,216 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:40:05,219 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-27 14:40:05,219 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 14:40:05,219 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:05,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:05,220 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:05,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-08-27 14:40:05,223 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:40:05,223 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:40:05,223 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:40:05,223 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = 1*ULTIMATE.start_main_~s__state~0 Supporting invariants [] [2021-08-27 14:40:05,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:05,245 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:40:05,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:40:05,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:40:05,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:40:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:40:05,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:40:05,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:40:05,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:05,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:40:05,386 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-08-27 14:40:05,387 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 123 transitions. cyclomatic complexity: 44 Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:05,478 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 123 transitions. cyclomatic complexity: 44. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 170 states and 232 transitions. Complement of second has 9 states. [2021-08-27 14:40:05,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-08-27 14:40:05,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:05,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2021-08-27 14:40:05,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 6 letters. [2021-08-27 14:40:05,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:40:05,480 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 9 letters. Loop has 6 letters. [2021-08-27 14:40:05,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:40:05,480 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 12 letters. [2021-08-27 14:40:05,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:40:05,481 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 170 states and 232 transitions. [2021-08-27 14:40:05,484 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-08-27 14:40:05,486 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 170 states to 141 states and 196 transitions. [2021-08-27 14:40:05,487 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 47 [2021-08-27 14:40:05,487 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2021-08-27 14:40:05,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 196 transitions. [2021-08-27 14:40:05,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:40:05,487 INFO L681 BuchiCegarLoop]: Abstraction has 141 states and 196 transitions. [2021-08-27 14:40:05,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states and 196 transitions. [2021-08-27 14:40:05,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 105. [2021-08-27 14:40:05,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 105 states have (on average 1.4095238095238096) internal successors, (148), 104 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 148 transitions. [2021-08-27 14:40:05,495 INFO L704 BuchiCegarLoop]: Abstraction has 105 states and 148 transitions. [2021-08-27 14:40:05,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:40:05,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 14:40:05,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 14:40:05,496 INFO L87 Difference]: Start difference. First operand 105 states and 148 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:05,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:40:05,514 INFO L93 Difference]: Finished difference Result 65 states and 94 transitions. [2021-08-27 14:40:05,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 14:40:05,515 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 94 transitions. [2021-08-27 14:40:05,516 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2021-08-27 14:40:05,517 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 61 states and 90 transitions. [2021-08-27 14:40:05,517 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-08-27 14:40:05,517 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-08-27 14:40:05,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 90 transitions. [2021-08-27 14:40:05,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:40:05,517 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-08-27 14:40:05,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 90 transitions. [2021-08-27 14:40:05,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-08-27 14:40:05,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 60 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:05,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 90 transitions. [2021-08-27 14:40:05,521 INFO L704 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-08-27 14:40:05,521 INFO L587 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-08-27 14:40:05,521 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 14:40:05,521 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 61 states and 90 transitions. [2021-08-27 14:40:05,522 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2021-08-27 14:40:05,522 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:40:05,522 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:40:05,522 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-08-27 14:40:05,522 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-08-27 14:40:05,523 INFO L791 eck$LassoCheckResult]: Stem: 943#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 944#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 945#L101 assume !false; 946#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 962#L26 assume 8466 == main_~s__state~0; 963#L27 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 986#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 982#L101 assume !false; 981#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 960#L26 assume !(8466 == main_~s__state~0); 961#L31 [2021-08-27 14:40:05,523 INFO L793 eck$LassoCheckResult]: Loop: 961#L31 assume 8512 == main_~s__state~0; 964#L32 main_~tmp___1~0 := main_#t~nondet8;havoc main_#t~nondet8; 955#L71 assume !(0 != main_~tmp___1~0);main_~s__state~0 := 8640; 957#L101 assume !false; 977#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 978#L26 assume !(8466 == main_~s__state~0); 961#L31 [2021-08-27 14:40:05,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:05,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1523382593, now seen corresponding path program 1 times [2021-08-27 14:40:05,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:05,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694164469] [2021-08-27 14:40:05,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:05,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:05,537 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:40:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:05,554 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:40:05,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:05,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1623382260, now seen corresponding path program 1 times [2021-08-27 14:40:05,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:05,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877369298] [2021-08-27 14:40:05,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:05,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:05,558 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:40:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:05,562 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:40:05,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:05,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1141286606, now seen corresponding path program 1 times [2021-08-27 14:40:05,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:05,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733950414] [2021-08-27 14:40:05,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:05,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:40:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:40:05,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:40:05,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733950414] [2021-08-27 14:40:05,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733950414] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 14:40:05,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 14:40:05,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 14:40:05,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90247829] [2021-08-27 14:40:05,663 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:40:05,663 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:40:05,663 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:40:05,663 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:40:05,663 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:40:05,663 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:05,663 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:40:05,663 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:40:05,664 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2021-08-27 14:40:05,664 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:40:05,664 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:40:05,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:05,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:05,715 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:40:05,715 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:40:05,715 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:05,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:05,716 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:05,725 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:40:05,726 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:40:05,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-08-27 14:40:05,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:05,775 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:05,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:05,776 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:05,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-08-27 14:40:05,779 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:40:05,780 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:40:05,812 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:40:05,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:05,839 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:40:05,840 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:40:05,840 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:40:05,840 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:40:05,840 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:40:05,840 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:05,840 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:40:05,840 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:40:05,840 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2021-08-27 14:40:05,840 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:40:05,840 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:40:05,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:05,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:05,887 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:40:05,888 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:40:05,888 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:05,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:05,889 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:05,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-08-27 14:40:05,892 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 [2021-08-27 14:40:05,900 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:40:05,900 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:40:05,900 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:40:05,900 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:40:05,900 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:40:05,902 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:40:05,902 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:40:05,915 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:40:05,918 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:40:05,918 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 14:40:05,918 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:05,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:05,929 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:05,936 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:40:05,936 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:40:05,936 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:40:05,937 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = -1*ULTIMATE.start_main_~s__state~0 + 8576 Supporting invariants [] [2021-08-27 14:40:05,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-08-27 14:40:05,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-08-27 14:40:05,960 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:40:05,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:40:05,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:40:05,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:40:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:40:06,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:40:06,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:40:06,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:40:06,139 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-08-27 14:40:06,139 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 61 states and 90 transitions. cyclomatic complexity: 33 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:06,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:06,226 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 61 states and 90 transitions. cyclomatic complexity: 33. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 183 states and 281 transitions. Complement of second has 9 states. [2021-08-27 14:40:06,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-08-27 14:40:06,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:06,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2021-08-27 14:40:06,228 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 6 letters. [2021-08-27 14:40:06,229 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:40:06,229 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 16 letters. Loop has 6 letters. [2021-08-27 14:40:06,230 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:40:06,231 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 12 letters. [2021-08-27 14:40:06,232 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:40:06,232 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 281 transitions. [2021-08-27 14:40:06,237 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2021-08-27 14:40:06,240 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 163 states and 245 transitions. [2021-08-27 14:40:06,240 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2021-08-27 14:40:06,240 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2021-08-27 14:40:06,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 163 states and 245 transitions. [2021-08-27 14:40:06,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:40:06,241 INFO L681 BuchiCegarLoop]: Abstraction has 163 states and 245 transitions. [2021-08-27 14:40:06,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states and 245 transitions. [2021-08-27 14:40:06,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 125. [2021-08-27 14:40:06,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 125 states have (on average 1.464) internal successors, (183), 124 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:06,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 183 transitions. [2021-08-27 14:40:06,250 INFO L704 BuchiCegarLoop]: Abstraction has 125 states and 183 transitions. [2021-08-27 14:40:06,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:40:06,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 14:40:06,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 14:40:06,251 INFO L87 Difference]: Start difference. First operand 125 states and 183 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:06,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:40:06,276 INFO L93 Difference]: Finished difference Result 164 states and 223 transitions. [2021-08-27 14:40:06,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 14:40:06,276 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 164 states and 223 transitions. [2021-08-27 14:40:06,278 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 36 [2021-08-27 14:40:06,279 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 164 states to 154 states and 211 transitions. [2021-08-27 14:40:06,279 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2021-08-27 14:40:06,279 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-08-27 14:40:06,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 154 states and 211 transitions. [2021-08-27 14:40:06,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:40:06,280 INFO L681 BuchiCegarLoop]: Abstraction has 154 states and 211 transitions. [2021-08-27 14:40:06,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states and 211 transitions. [2021-08-27 14:40:06,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 134. [2021-08-27 14:40:06,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 134 states have (on average 1.4253731343283582) internal successors, (191), 133 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:06,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 191 transitions. [2021-08-27 14:40:06,286 INFO L704 BuchiCegarLoop]: Abstraction has 134 states and 191 transitions. [2021-08-27 14:40:06,286 INFO L587 BuchiCegarLoop]: Abstraction has 134 states and 191 transitions. [2021-08-27 14:40:06,286 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-08-27 14:40:06,286 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 134 states and 191 transitions. [2021-08-27 14:40:06,287 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 35 [2021-08-27 14:40:06,287 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:40:06,287 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:40:06,287 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 14:40:06,287 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 14:40:06,288 INFO L791 eck$LassoCheckResult]: Stem: 1548#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1549#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 1577#L101 assume !false; 1674#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1672#L26 assume 8466 == main_~s__state~0; 1560#L27 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 1561#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 1554#L101 [2021-08-27 14:40:06,288 INFO L793 eck$LassoCheckResult]: Loop: 1554#L101 assume !false; 1555#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1573#L26 assume !(8466 == main_~s__state~0); 1574#L31 assume !(8512 == main_~s__state~0); 1550#L47 assume !(8640 == main_~s__state~0); 1551#L51 assume 8656 == main_~s__state~0; 1562#L52 assume 2 == main_~blastFlag~0;main_~blastFlag~0 := 3; 1581#L90-1 assume 4 == main_~blastFlag~0;main_~blastFlag~0 := 5; 1583#L94-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8640; 1566#L101 assume !false; 1680#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1678#L26 assume 8466 == main_~s__state~0; 1614#L27 assume !(0 == main_~blastFlag~0); 1588#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 1554#L101 [2021-08-27 14:40:06,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:06,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 1 times [2021-08-27 14:40:06,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:06,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732859315] [2021-08-27 14:40:06,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:06,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:06,296 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:40:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:06,303 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:40:06,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:06,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1982564596, now seen corresponding path program 1 times [2021-08-27 14:40:06,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:06,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596141616] [2021-08-27 14:40:06,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:06,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:40:06,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:40:06,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:40:06,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596141616] [2021-08-27 14:40:06,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596141616] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 14:40:06,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 14:40:06,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 14:40:06,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509111001] [2021-08-27 14:40:06,318 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 14:40:06,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:40:06,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 14:40:06,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 14:40:06,319 INFO L87 Difference]: Start difference. First operand 134 states and 191 transitions. cyclomatic complexity: 65 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:06,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:40:06,341 INFO L93 Difference]: Finished difference Result 182 states and 254 transitions. [2021-08-27 14:40:06,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 14:40:06,341 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 254 transitions. [2021-08-27 14:40:06,342 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2021-08-27 14:40:06,343 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 182 states and 254 transitions. [2021-08-27 14:40:06,344 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 70 [2021-08-27 14:40:06,344 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 70 [2021-08-27 14:40:06,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 254 transitions. [2021-08-27 14:40:06,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:40:06,344 INFO L681 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-08-27 14:40:06,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 254 transitions. [2021-08-27 14:40:06,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-08-27 14:40:06,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 182 states have (on average 1.3956043956043955) internal successors, (254), 181 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:06,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 254 transitions. [2021-08-27 14:40:06,360 INFO L704 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-08-27 14:40:06,360 INFO L587 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-08-27 14:40:06,360 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-08-27 14:40:06,360 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 182 states and 254 transitions. [2021-08-27 14:40:06,362 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2021-08-27 14:40:06,362 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:40:06,362 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:40:06,362 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 14:40:06,363 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 14:40:06,363 INFO L791 eck$LassoCheckResult]: Stem: 1874#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1875#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 1909#L101 assume !false; 1975#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1976#L26 assume 8466 == main_~s__state~0; 1970#L27 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 1967#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 1940#L101 [2021-08-27 14:40:06,363 INFO L793 eck$LassoCheckResult]: Loop: 1940#L101 assume !false; 1987#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1985#L26 assume !(8466 == main_~s__state~0); 1983#L31 assume !(8512 == main_~s__state~0); 1980#L47 assume !(8640 == main_~s__state~0); 1880#L51 assume 8656 == main_~s__state~0; 1881#L52 assume 2 == main_~blastFlag~0;main_~blastFlag~0 := 3; 1900#L90-1 assume !(4 == main_~blastFlag~0); 1901#L97 assume !(5 == main_~blastFlag~0); 1907#L94-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8640; 1876#L101 assume !false; 1877#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1999#L26 assume 8466 == main_~s__state~0; 1997#L27 assume !(0 == main_~blastFlag~0); 1994#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 1940#L101 [2021-08-27 14:40:06,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:06,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 2 times [2021-08-27 14:40:06,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:06,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504889013] [2021-08-27 14:40:06,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:06,365 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:06,374 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:40:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:06,397 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:40:06,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:06,398 INFO L82 PathProgramCache]: Analyzing trace with hash 862619384, now seen corresponding path program 1 times [2021-08-27 14:40:06,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:06,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653770600] [2021-08-27 14:40:06,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:06,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:40:06,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:40:06,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:40:06,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653770600] [2021-08-27 14:40:06,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653770600] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 14:40:06,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 14:40:06,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 14:40:06,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33040685] [2021-08-27 14:40:06,416 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 14:40:06,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:40:06,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 14:40:06,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 14:40:06,417 INFO L87 Difference]: Start difference. First operand 182 states and 254 transitions. cyclomatic complexity: 80 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:06,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:40:06,451 INFO L93 Difference]: Finished difference Result 157 states and 202 transitions. [2021-08-27 14:40:06,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 14:40:06,451 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 157 states and 202 transitions. [2021-08-27 14:40:06,452 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-08-27 14:40:06,453 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 157 states to 111 states and 141 transitions. [2021-08-27 14:40:06,453 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 58 [2021-08-27 14:40:06,454 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2021-08-27 14:40:06,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 141 transitions. [2021-08-27 14:40:06,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:40:06,454 INFO L681 BuchiCegarLoop]: Abstraction has 111 states and 141 transitions. [2021-08-27 14:40:06,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 141 transitions. [2021-08-27 14:40:06,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2021-08-27 14:40:06,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 105 states have (on average 1.276190476190476) internal successors, (134), 104 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:06,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 134 transitions. [2021-08-27 14:40:06,457 INFO L704 BuchiCegarLoop]: Abstraction has 105 states and 134 transitions. [2021-08-27 14:40:06,457 INFO L587 BuchiCegarLoop]: Abstraction has 105 states and 134 transitions. [2021-08-27 14:40:06,457 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-08-27 14:40:06,457 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 105 states and 134 transitions. [2021-08-27 14:40:06,457 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-08-27 14:40:06,458 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:40:06,458 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:40:06,458 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 14:40:06,458 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 14:40:06,458 INFO L791 eck$LassoCheckResult]: Stem: 2215#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2216#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 2237#L101 assume !false; 2286#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2287#L26 assume 8466 == main_~s__state~0; 2274#L27 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 2269#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 2250#L101 [2021-08-27 14:40:06,458 INFO L793 eck$LassoCheckResult]: Loop: 2250#L101 assume !false; 2309#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2308#L26 assume !(8466 == main_~s__state~0); 2307#L31 assume !(8512 == main_~s__state~0); 2282#L47 assume !(8640 == main_~s__state~0); 2281#L51 assume 8656 == main_~s__state~0; 2280#L52 assume 2 == main_~blastFlag~0;main_~blastFlag~0 := 3; 2240#L90-1 assume !(4 == main_~blastFlag~0); 2241#L97 assume !(5 == main_~blastFlag~0); 2244#L94-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8640; 2245#L101 assume !false; 2252#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2231#L26 assume !(8466 == main_~s__state~0); 2232#L31 assume !(8512 == main_~s__state~0); 2234#L47 assume 8640 == main_~s__state~0; 2255#L48 assume !(3 == main_~blastFlag~0); 2249#L79-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8656; 2250#L101 [2021-08-27 14:40:06,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:06,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 3 times [2021-08-27 14:40:06,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:06,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289362735] [2021-08-27 14:40:06,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:06,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:06,465 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:40:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:06,471 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:40:06,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:06,472 INFO L82 PathProgramCache]: Analyzing trace with hash 49895967, now seen corresponding path program 1 times [2021-08-27 14:40:06,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:06,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295616770] [2021-08-27 14:40:06,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:06,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:40:06,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:40:06,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:40:06,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295616770] [2021-08-27 14:40:06,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295616770] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 14:40:06,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 14:40:06,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 14:40:06,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680211949] [2021-08-27 14:40:06,487 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 14:40:06,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:40:06,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 14:40:06,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 14:40:06,488 INFO L87 Difference]: Start difference. First operand 105 states and 134 transitions. cyclomatic complexity: 36 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:06,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:40:06,505 INFO L93 Difference]: Finished difference Result 116 states and 146 transitions. [2021-08-27 14:40:06,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 14:40:06,506 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 146 transitions. [2021-08-27 14:40:06,507 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2021-08-27 14:40:06,507 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 116 states and 146 transitions. [2021-08-27 14:40:06,507 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2021-08-27 14:40:06,508 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 64 [2021-08-27 14:40:06,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 146 transitions. [2021-08-27 14:40:06,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:40:06,508 INFO L681 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-08-27 14:40:06,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states and 146 transitions. [2021-08-27 14:40:06,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-08-27 14:40:06,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 116 states have (on average 1.2586206896551724) internal successors, (146), 115 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:06,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2021-08-27 14:40:06,510 INFO L704 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-08-27 14:40:06,511 INFO L587 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-08-27 14:40:06,511 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-08-27 14:40:06,511 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 146 transitions. [2021-08-27 14:40:06,511 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2021-08-27 14:40:06,511 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:40:06,511 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:40:06,512 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 14:40:06,512 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 14:40:06,512 INFO L791 eck$LassoCheckResult]: Stem: 2442#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2443#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 2446#L101 assume !false; 2447#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2460#L26 assume 8466 == main_~s__state~0; 2461#L27 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 2501#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 2494#L101 [2021-08-27 14:40:06,512 INFO L793 eck$LassoCheckResult]: Loop: 2494#L101 assume !false; 2539#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2538#L26 assume !(8466 == main_~s__state~0); 2537#L31 assume !(8512 == main_~s__state~0); 2535#L47 assume !(8640 == main_~s__state~0); 2532#L51 assume 8656 == main_~s__state~0; 2509#L52 assume !(2 == main_~blastFlag~0); 2466#L90-1 assume !(4 == main_~blastFlag~0); 2467#L97 assume !(5 == main_~blastFlag~0); 2544#L94-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8640; 2526#L101 assume !false; 2543#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2542#L26 assume !(8466 == main_~s__state~0); 2540#L31 assume !(8512 == main_~s__state~0); 2515#L47 assume 8640 == main_~s__state~0; 2534#L48 assume !(3 == main_~blastFlag~0); 2541#L79-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8656; 2494#L101 [2021-08-27 14:40:06,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:06,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 4 times [2021-08-27 14:40:06,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:06,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362190363] [2021-08-27 14:40:06,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:06,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:06,518 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:40:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:06,523 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:40:06,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:06,524 INFO L82 PathProgramCache]: Analyzing trace with hash 750960545, now seen corresponding path program 1 times [2021-08-27 14:40:06,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:06,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227540543] [2021-08-27 14:40:06,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:06,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:40:06,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:40:06,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:40:06,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227540543] [2021-08-27 14:40:06,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227540543] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 14:40:06,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 14:40:06,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 14:40:06,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854164222] [2021-08-27 14:40:06,553 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 14:40:06,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:40:06,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 14:40:06,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 14:40:06,556 INFO L87 Difference]: Start difference. First operand 116 states and 146 transitions. cyclomatic complexity: 38 Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:06,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:40:06,567 INFO L93 Difference]: Finished difference Result 142 states and 175 transitions. [2021-08-27 14:40:06,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 14:40:06,568 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142 states and 175 transitions. [2021-08-27 14:40:06,569 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-08-27 14:40:06,570 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142 states to 137 states and 167 transitions. [2021-08-27 14:40:06,570 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2021-08-27 14:40:06,570 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2021-08-27 14:40:06,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 137 states and 167 transitions. [2021-08-27 14:40:06,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:40:06,570 INFO L681 BuchiCegarLoop]: Abstraction has 137 states and 167 transitions. [2021-08-27 14:40:06,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states and 167 transitions. [2021-08-27 14:40:06,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 109. [2021-08-27 14:40:06,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 108 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:06,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 136 transitions. [2021-08-27 14:40:06,573 INFO L704 BuchiCegarLoop]: Abstraction has 109 states and 136 transitions. [2021-08-27 14:40:06,573 INFO L587 BuchiCegarLoop]: Abstraction has 109 states and 136 transitions. [2021-08-27 14:40:06,573 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-08-27 14:40:06,573 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 109 states and 136 transitions. [2021-08-27 14:40:06,574 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-08-27 14:40:06,574 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:40:06,574 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:40:06,575 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 14:40:06,575 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 14:40:06,575 INFO L791 eck$LassoCheckResult]: Stem: 2706#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2707#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 2729#L101 assume !false; 2782#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2783#L26 assume 8466 == main_~s__state~0; 2777#L27 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 2774#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 2710#L101 [2021-08-27 14:40:06,575 INFO L793 eck$LassoCheckResult]: Loop: 2710#L101 assume !false; 2711#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2723#L26 assume !(8466 == main_~s__state~0); 2724#L31 assume !(8512 == main_~s__state~0); 2726#L47 assume !(8640 == main_~s__state~0); 2746#L51 assume 8656 == main_~s__state~0; 2810#L52 assume !(2 == main_~blastFlag~0); 2731#L90-1 assume !(4 == main_~blastFlag~0); 2732#L97 assume !(5 == main_~blastFlag~0); 2735#L94-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8640; 2710#L101 [2021-08-27 14:40:06,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:06,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 5 times [2021-08-27 14:40:06,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:06,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490037067] [2021-08-27 14:40:06,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:06,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:06,583 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:40:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:06,594 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:40:06,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:06,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1947655960, now seen corresponding path program 1 times [2021-08-27 14:40:06,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:06,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65679812] [2021-08-27 14:40:06,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:06,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:06,602 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:40:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:06,613 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:40:06,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:06,614 INFO L82 PathProgramCache]: Analyzing trace with hash 163931656, now seen corresponding path program 1 times [2021-08-27 14:40:06,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:06,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592877530] [2021-08-27 14:40:06,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:06,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:40:06,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:40:06,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:40:06,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592877530] [2021-08-27 14:40:06,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592877530] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 14:40:06,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 14:40:06,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 14:40:06,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367496020] [2021-08-27 14:40:06,688 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:40:06,688 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:40:06,688 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:40:06,688 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:40:06,688 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:40:06,688 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:06,688 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:40:06,688 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:40:06,689 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2021-08-27 14:40:06,689 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:40:06,689 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:40:06,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:06,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:06,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:06,781 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:40:06,781 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:40:06,781 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:06,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:06,785 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:06,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-08-27 14:40:06,798 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:40:06,799 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:40:06,810 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:40:06,810 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0=4} Honda state: {ULTIMATE.start_main_~s__hit~0=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:40:06,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:06,826 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:06,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:06,832 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:06,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-08-27 14:40:06,835 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:40:06,835 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:40:06,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-08-27 14:40:06,866 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:06,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:06,866 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:06,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-08-27 14:40:06,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:40:06,869 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:40:06,886 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:40:06,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-08-27 14:40:06,908 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:40:06,908 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:40:06,908 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:40:06,908 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:40:06,908 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:40:06,908 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:06,908 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:40:06,909 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:40:06,909 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2021-08-27 14:40:06,909 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:40:06,909 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:40:06,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:06,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:06,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:40:07,058 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:40:07,059 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:40:07,059 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:07,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:07,061 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:07,069 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 [2021-08-27 14:40:07,077 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:40:07,077 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:40:07,077 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:40:07,077 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-08-27 14:40:07,077 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:40:07,078 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-08-27 14:40:07,078 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:40:07,086 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:40:07,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-08-27 14:40:07,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-08-27 14:40:07,107 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:07,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:07,108 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:07,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-08-27 14:40:07,112 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 [2021-08-27 14:40:07,117 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:40:07,118 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:40:07,118 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:40:07,118 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:40:07,118 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:40:07,119 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:40:07,119 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:40:07,120 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:40:07,122 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-27 14:40:07,122 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 14:40:07,122 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:40:07,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:40:07,129 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:40:07,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-08-27 14:40:07,135 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:40:07,135 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:40:07,135 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:40:07,135 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = 1*ULTIMATE.start_main_~s__state~0 Supporting invariants [] [2021-08-27 14:40:07,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:07,180 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:40:07,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:40:07,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:40:07,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:40:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:40:07,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:40:07,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:40:07,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:40:07,297 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-27 14:40:07,297 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 109 states and 136 transitions. cyclomatic complexity: 36 Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:07,331 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 109 states and 136 transitions. cyclomatic complexity: 36. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 148 states and 178 transitions. Complement of second has 6 states. [2021-08-27 14:40:07,332 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 [2021-08-27 14:40:07,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:07,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2021-08-27 14:40:07,332 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 10 letters. [2021-08-27 14:40:07,333 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:40:07,333 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 17 letters. Loop has 10 letters. [2021-08-27 14:40:07,333 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:40:07,333 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 20 letters. [2021-08-27 14:40:07,333 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:40:07,333 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 178 transitions. [2021-08-27 14:40:07,334 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-08-27 14:40:07,335 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 109 states and 132 transitions. [2021-08-27 14:40:07,335 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-08-27 14:40:07,335 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-08-27 14:40:07,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 109 states and 132 transitions. [2021-08-27 14:40:07,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:40:07,335 INFO L681 BuchiCegarLoop]: Abstraction has 109 states and 132 transitions. [2021-08-27 14:40:07,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states and 132 transitions. [2021-08-27 14:40:07,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-08-27 14:40:07,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 108 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:07,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2021-08-27 14:40:07,337 INFO L704 BuchiCegarLoop]: Abstraction has 109 states and 132 transitions. [2021-08-27 14:40:07,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:40:07,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 14:40:07,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 14:40:07,338 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:07,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:40:07,350 INFO L93 Difference]: Finished difference Result 92 states and 106 transitions. [2021-08-27 14:40:07,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 14:40:07,351 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92 states and 106 transitions. [2021-08-27 14:40:07,351 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2021-08-27 14:40:07,352 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92 states to 62 states and 71 transitions. [2021-08-27 14:40:07,352 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2021-08-27 14:40:07,352 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2021-08-27 14:40:07,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 71 transitions. [2021-08-27 14:40:07,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:40:07,352 INFO L681 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-08-27 14:40:07,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 71 transitions. [2021-08-27 14:40:07,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-08-27 14:40:07,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 61 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:40:07,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2021-08-27 14:40:07,354 INFO L704 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-08-27 14:40:07,354 INFO L587 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-08-27 14:40:07,354 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-08-27 14:40:07,354 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 62 states and 71 transitions. [2021-08-27 14:40:07,354 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2021-08-27 14:40:07,354 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:40:07,354 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:40:07,355 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 14:40:07,355 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 14:40:07,355 INFO L791 eck$LassoCheckResult]: Stem: 3242#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 3243#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 3266#L101 assume !false; 3289#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 3288#L26 assume 8466 == main_~s__state~0; 3287#L27 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 3285#L59-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 3282#L101 assume !false; 3281#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 3279#L26 assume !(8466 == main_~s__state~0); 3277#L31 assume 8512 == main_~s__state~0; 3267#L32 [2021-08-27 14:40:07,355 INFO L793 eck$LassoCheckResult]: Loop: 3267#L32 main_~tmp___1~0 := main_#t~nondet8;havoc main_#t~nondet8; 3253#L71 assume 0 != main_~tmp___1~0;main_~s__state~0 := 8466; 3254#L101 assume !false; 3297#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 3295#L26 assume 8466 == main_~s__state~0; 3248#L27 assume !(0 == main_~blastFlag~0); 3249#L59-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 3270#L101 assume !false; 3286#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 3284#L26 assume !(8466 == main_~s__state~0); 3276#L31 assume 8512 == main_~s__state~0; 3267#L32 [2021-08-27 14:40:07,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:07,355 INFO L82 PathProgramCache]: Analyzing trace with hash 21626939, now seen corresponding path program 1 times [2021-08-27 14:40:07,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:07,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767623539] [2021-08-27 14:40:07,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:07,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:07,361 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:40:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:07,366 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:40:07,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:07,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1294878776, now seen corresponding path program 1 times [2021-08-27 14:40:07,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:07,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899645320] [2021-08-27 14:40:07,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:07,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:07,369 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:40:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:07,371 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:40:07,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:40:07,372 INFO L82 PathProgramCache]: Analyzing trace with hash 937672638, now seen corresponding path program 1 times [2021-08-27 14:40:07,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:40:07,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767919083] [2021-08-27 14:40:07,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:40:07,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:40:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:07,377 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:40:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:40:07,385 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:40:07,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-08-27 14:40:07,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 02:40:07 BoogieIcfgContainer [2021-08-27 14:40:07,779 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 14:40:07,779 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 14:40:07,779 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 14:40:07,780 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 14:40:07,780 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:40:02" (3/4) ... [2021-08-27 14:40:07,782 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 14:40:07,815 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 14:40:07,815 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 14:40:07,817 INFO L168 Benchmark]: Toolchain (without parser) took 6332.53 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 35.9 MB in the beginning and 62.0 MB in the end (delta: -26.0 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.1 GB. [2021-08-27 14:40:07,817 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 56.6 MB. Free memory was 39.1 MB in the beginning and 39.0 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:40:07,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.06 ms. Allocated memory is still 56.6 MB. Free memory was 35.7 MB in the beginning and 25.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 14:40:07,817 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.45 ms. Allocated memory is still 56.6 MB. Free memory was 25.8 MB in the beginning and 24.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:40:07,818 INFO L168 Benchmark]: Boogie Preprocessor took 57.00 ms. Allocated memory is still 56.6 MB. Free memory was 24.4 MB in the beginning and 41.0 MB in the end (delta: -16.6 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2021-08-27 14:40:07,818 INFO L168 Benchmark]: RCFGBuilder took 400.59 ms. Allocated memory is still 56.6 MB. Free memory was 41.0 MB in the beginning and 26.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 14:40:07,818 INFO L168 Benchmark]: BuchiAutomizer took 5553.95 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 26.7 MB in the beginning and 63.1 MB in the end (delta: -36.4 MB). Peak memory consumption was 41.6 MB. Max. memory is 16.1 GB. [2021-08-27 14:40:07,819 INFO L168 Benchmark]: Witness Printer took 36.22 ms. Allocated memory is still 100.7 MB. Free memory was 63.1 MB in the beginning and 62.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 14:40:07,820 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 56.6 MB. Free memory was 39.1 MB in the beginning and 39.0 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 225.06 ms. Allocated memory is still 56.6 MB. Free memory was 35.7 MB in the beginning and 25.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.45 ms. Allocated memory is still 56.6 MB. Free memory was 25.8 MB in the beginning and 24.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.00 ms. Allocated memory is still 56.6 MB. Free memory was 24.4 MB in the beginning and 41.0 MB in the end (delta: -16.6 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 400.59 ms. Allocated memory is still 56.6 MB. Free memory was 41.0 MB in the beginning and 26.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 5553.95 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 26.7 MB in the beginning and 63.1 MB in the end (delta: -36.4 MB). Peak memory consumption was 41.6 MB. Max. memory is 16.1 GB. * Witness Printer took 36.22 ms. Allocated memory is still 100.7 MB. Free memory was 63.1 MB in the beginning and 62.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (8 trivial, 5 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * blastFlag + 1 and consists of 4 locations. One deterministic module has affine ranking function 8489 + -1 * s__state and consists of 4 locations. One deterministic module has affine ranking function s__state and consists of 5 locations. One deterministic module has affine ranking function 8576 + -1 * s__state and consists of 5 locations. One deterministic module has affine ranking function s__state and consists of 4 locations. 8 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 62 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.4s and 10 iterations. TraceHistogramMax:2. Analysis of lassos took 3.8s. Construction of modules took 0.2s. Büchi inclusion checks took 1.1s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 13. Automata minimization 72.5ms AutomataMinimizationTime, 13 MinimizatonAttempts, 155 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 182 states and ocurred in iteration 5. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 352 SDtfs, 248 SDslu, 196 SDs, 0 SdLazy, 269 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 245.0ms Time LassoAnalysisResults: nont1 unkn0 SFLI4 SFLT1 conc0 concLT4 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp52 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq190 hnf91 smp100 dnf177 smp79 tf112 neg94 sie115 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 27ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 31]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=3, NULL=0, \result=0, tmp___1=14, NULL=4, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@25990d15=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3810c88=14, NULL=0, s__hit=0, NULL=5, blastFlag=2, s__state=8512} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 31]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L11] int s__state ; [L12] int s__hit = __VERIFIER_nondet_int() ; [L13] int blastFlag ; [L14] int tmp___1; [L16] s__state = 8466 [L17] blastFlag = 0 [L19] COND TRUE 1 [L20] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L26] COND TRUE s__state == 8466 [L59] COND TRUE blastFlag == 0 [L60] blastFlag = 2 [L62] COND FALSE !(\read(s__hit)) [L65] s__state = 8512 [L19] COND TRUE 1 [L20] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L26] COND FALSE !(s__state == 8466) [L31] COND TRUE s__state == 8512 Loop: [L70] tmp___1 = __VERIFIER_nondet_int() [L71] COND TRUE \read(tmp___1) [L72] s__state = 8466 [L19] COND TRUE 1 [L20] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L26] COND TRUE s__state == 8466 [L59] COND FALSE !(blastFlag == 0) [L62] COND FALSE !(\read(s__hit)) [L65] s__state = 8512 [L19] COND TRUE 1 [L20] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L26] COND FALSE !(s__state == 8466) [L31] COND TRUE s__state == 8512 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 14:40:07,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...