./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 791161d1 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 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 14:37:50,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 14:37:50,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 14:37:51,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 14:37:51,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 14:37:51,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 14:37:51,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 14:37:51,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 14:37:51,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 14:37:51,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 14:37:51,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 14:37:51,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 14:37:51,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 14:37:51,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 14:37:51,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 14:37:51,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 14:37:51,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 14:37:51,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 14:37:51,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 14:37:51,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 14:37:51,084 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 14:37:51,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 14:37:51,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 14:37:51,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 14:37:51,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 14:37:51,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 14:37:51,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 14:37:51,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 14:37:51,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 14:37:51,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 14:37:51,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 14:37:51,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 14:37:51,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 14:37:51,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 14:37:51,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 14:37:51,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 14:37:51,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 14:37:51,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 14:37:51,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 14:37:51,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 14:37:51,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 14:37:51,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 14:37:51,110 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-23 14:37:51,139 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 14:37:51,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 14:37:51,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 14:37:51,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 14:37:51,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 14:37:51,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 14:37:51,142 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 14:37:51,142 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-23 14:37:51,142 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-23 14:37:51,143 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-23 14:37:51,143 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-23 14:37:51,144 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-23 14:37:51,144 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-23 14:37:51,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 14:37:51,144 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 14:37:51,144 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 14:37:51,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 14:37:51,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 14:37:51,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 14:37:51,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-23 14:37:51,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-23 14:37:51,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-23 14:37:51,146 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 14:37:51,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 14:37:51,146 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-23 14:37:51,146 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 14:37:51,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-23 14:37:51,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 14:37:51,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 14:37:51,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 14:37:51,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 14:37:51,149 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-23 14:37:51,149 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db [2022-07-23 14:37:51,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 14:37:51,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 14:37:51,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 14:37:51,474 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 14:37:51,475 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 14:37:51,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2022-07-23 14:37:51,540 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33d9fb724/b8ceb867b14c40ef8de0677b20b89cb8/FLAGe5af84df8 [2022-07-23 14:37:51,941 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 14:37:51,942 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2022-07-23 14:37:51,951 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33d9fb724/b8ceb867b14c40ef8de0677b20b89cb8/FLAGe5af84df8 [2022-07-23 14:37:52,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33d9fb724/b8ceb867b14c40ef8de0677b20b89cb8 [2022-07-23 14:37:52,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 14:37:52,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 14:37:52,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 14:37:52,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 14:37:52,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 14:37:52,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:37:52" (1/1) ... [2022-07-23 14:37:52,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d9b87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:37:52, skipping insertion in model container [2022-07-23 14:37:52,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:37:52" (1/1) ... [2022-07-23 14:37:52,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 14:37:52,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 14:37:52,530 WARN L230 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[8244,8257] [2022-07-23 14:37:52,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:37:52,542 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 14:37:52,557 WARN L230 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[8244,8257] [2022-07-23 14:37:52,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:37:52,569 INFO L208 MainTranslator]: Completed translation [2022-07-23 14:37:52,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:37:52 WrapperNode [2022-07-23 14:37:52,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 14:37:52,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 14:37:52,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 14:37:52,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 14:37:52,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:37:52" (1/1) ... [2022-07-23 14:37:52,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:37:52" (1/1) ... [2022-07-23 14:37:52,607 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 73 [2022-07-23 14:37:52,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 14:37:52,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 14:37:52,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 14:37:52,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 14:37:52,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:37:52" (1/1) ... [2022-07-23 14:37:52,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:37:52" (1/1) ... [2022-07-23 14:37:52,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:37:52" (1/1) ... [2022-07-23 14:37:52,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:37:52" (1/1) ... [2022-07-23 14:37:52,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:37:52" (1/1) ... [2022-07-23 14:37:52,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:37:52" (1/1) ... [2022-07-23 14:37:52,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:37:52" (1/1) ... [2022-07-23 14:37:52,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 14:37:52,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 14:37:52,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 14:37:52,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 14:37:52,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:37:52" (1/1) ... [2022-07-23 14:37:52,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:52,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:52,658 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) [2022-07-23 14:37:52,660 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 [2022-07-23 14:37:52,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 14:37:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 14:37:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 14:37:52,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 14:37:52,744 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 14:37:52,746 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 14:37:52,923 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 14:37:52,929 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 14:37:52,929 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-23 14:37:52,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:37:52 BoogieIcfgContainer [2022-07-23 14:37:52,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 14:37:52,933 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-23 14:37:52,933 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-23 14:37:52,936 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-23 14:37:52,936 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:37:52,936 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.07 02:37:52" (1/3) ... [2022-07-23 14:37:52,938 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@32e40dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:37:52, skipping insertion in model container [2022-07-23 14:37:52,938 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:37:52,938 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:37:52" (2/3) ... [2022-07-23 14:37:52,938 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@32e40dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:37:52, skipping insertion in model container [2022-07-23 14:37:52,938 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:37:52,938 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:37:52" (3/3) ... [2022-07-23 14:37:52,940 INFO L354 chiAutomizerObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2022-07-23 14:37:52,985 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-23 14:37:52,986 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-23 14:37:52,986 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-23 14:37:52,986 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-23 14:37:52,986 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-23 14:37:52,986 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-23 14:37:52,986 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-23 14:37:52,986 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-23 14:37:52,990 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:53,020 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-07-23 14:37:53,020 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:37:53,020 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:37:53,026 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 14:37:53,026 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-07-23 14:37:53,027 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-23 14:37:53,027 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:53,029 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-07-23 14:37:53,029 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:37:53,030 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:37:53,030 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 14:37:53,030 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-07-23 14:37:53,051 INFO L752 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 6#L111true [2022-07-23 14:37:53,051 INFO L754 eck$LassoCheckResult]: Loop: 6#L111true assume !false; 4#L30true assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 12#L36true assume 8466 == main_~s__state~0#1; 14#L37true assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 17#L69-1true assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 6#L111true [2022-07-23 14:37:53,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:53,057 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-23 14:37:53,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:53,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48159445] [2022-07-23 14:37:53,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:53,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:53,199 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:37:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:53,237 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:37:53,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:53,242 INFO L85 PathProgramCache]: Analyzing trace with hash 39284085, now seen corresponding path program 1 times [2022-07-23 14:37:53,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:53,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837866532] [2022-07-23 14:37:53,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:53,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:53,261 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:37:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:53,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:37:53,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:53,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723571, now seen corresponding path program 1 times [2022-07-23 14:37:53,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:53,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957173752] [2022-07-23 14:37:53,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:53,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:53,300 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:37:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:53,325 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:37:53,420 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:37:53,421 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:37:53,421 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:37:53,421 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:37:53,421 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:37:53,421 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:53,421 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:37:53,422 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:37:53,422 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2022-07-23 14:37:53,422 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:37:53,422 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:37:53,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:53,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:53,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:53,528 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:37:53,528 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:37:53,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:53,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:53,533 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) [2022-07-23 14:37:53,535 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 [2022-07-23 14:37:53,538 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:37:53,538 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:37:53,586 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 [2022-07-23 14:37:53,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:53,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:53,587 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) [2022-07-23 14:37:53,588 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 [2022-07-23 14:37:53,590 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:37:53,590 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:37:53,624 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:37:53,647 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 [2022-07-23 14:37:53,647 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:37:53,647 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:37:53,647 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:37:53,647 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:37:53,647 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:37:53,647 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:53,647 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:37:53,647 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:37:53,648 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2022-07-23 14:37:53,648 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:37:53,648 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:37:53,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:53,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:53,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:53,713 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:37:53,717 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:37:53,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:53,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:53,719 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) [2022-07-23 14:37:53,728 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:37:53,729 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 [2022-07-23 14:37:53,737 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:37:53,737 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:37:53,738 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:37:53,738 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:37:53,738 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:37:53,743 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:37:53,743 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:37:53,755 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:37:53,768 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:37:53,768 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:37:53,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:53,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:53,771 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) [2022-07-23 14:37:53,772 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 [2022-07-23 14:37:53,800 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:37:53,800 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:37:53,801 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:37:53,801 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~blastFlag~0#1) = -1*ULTIMATE.start_main_~blastFlag~0#1 + 1 Supporting invariants [] [2022-07-23 14:37:53,820 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 [2022-07-23 14:37:53,823 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:37:53,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:37:53,892 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 [2022-07-23 14:37:53,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:37:53,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:37:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:37:53,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:37:53,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:37:53,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:37:53,997 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 [2022-07-23 14:37:53,998 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:54,054 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 52 states and 84 transitions. Complement of second has 5 states. [2022-07-23 14:37:54,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-23 14:37:54,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2022-07-23 14:37:54,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 5 letters. [2022-07-23 14:37:54,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:37:54,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 7 letters. Loop has 5 letters. [2022-07-23 14:37:54,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:37:54,065 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 10 letters. [2022-07-23 14:37:54,065 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:37:54,066 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 84 transitions. [2022-07-23 14:37:54,069 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-07-23 14:37:54,074 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 38 states and 59 transitions. [2022-07-23 14:37:54,075 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2022-07-23 14:37:54,075 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2022-07-23 14:37:54,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 59 transitions. [2022-07-23 14:37:54,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:37:54,080 INFO L369 hiAutomatonCegarLoop]: Abstraction has 38 states and 59 transitions. [2022-07-23 14:37:54,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 59 transitions. [2022-07-23 14:37:54,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-07-23 14:37:54,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2022-07-23 14:37:54,112 INFO L392 hiAutomatonCegarLoop]: Abstraction has 36 states and 57 transitions. [2022-07-23 14:37:54,113 INFO L374 stractBuchiCegarLoop]: Abstraction has 36 states and 57 transitions. [2022-07-23 14:37:54,114 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-23 14:37:54,114 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 57 transitions. [2022-07-23 14:37:54,119 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-07-23 14:37:54,120 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:37:54,120 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:37:54,120 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-23 14:37:54,120 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-07-23 14:37:54,121 INFO L752 eck$LassoCheckResult]: Stem: 124#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 125#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 148#L111 assume !false; 120#L30 [2022-07-23 14:37:54,122 INFO L754 eck$LassoCheckResult]: Loop: 120#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 121#L36 assume 8466 == main_~s__state~0#1; 144#L37 assume !(0 == main_~blastFlag~0#1); 151#L69-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 130#L111 assume !false; 120#L30 [2022-07-23 14:37:54,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:54,123 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-07-23 14:37:54,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:54,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569333425] [2022-07-23 14:37:54,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:54,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:54,147 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:37:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:54,154 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:37:54,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:54,155 INFO L85 PathProgramCache]: Analyzing trace with hash 44013377, now seen corresponding path program 1 times [2022-07-23 14:37:54,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:54,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677680996] [2022-07-23 14:37:54,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:54,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:54,160 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:37:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:54,163 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:37:54,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:54,164 INFO L85 PathProgramCache]: Analyzing trace with hash 297857786, now seen corresponding path program 1 times [2022-07-23 14:37:54,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:54,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330913522] [2022-07-23 14:37:54,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:54,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:37:54,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:37:54,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 14:37:54,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330913522] [2022-07-23 14:37:54,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330913522] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 14:37:54,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 14:37:54,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 14:37:54,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644631784] [2022-07-23 14:37:54,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 14:37:54,244 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:37:54,246 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:37:54,246 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:37:54,247 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:37:54,247 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:37:54,247 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:54,247 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:37:54,247 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:37:54,247 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2022-07-23 14:37:54,247 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:37:54,248 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:37:54,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:54,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:54,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:54,309 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:37:54,309 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:37:54,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:54,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:54,316 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) [2022-07-23 14:37:54,321 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 [2022-07-23 14:37:54,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:37:54,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:37:54,344 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:37:54,344 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~blastFlag~0#1=-1} Honda state: {ULTIMATE.start_main_~blastFlag~0#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:37:54,362 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 [2022-07-23 14:37:54,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:54,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:54,364 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) [2022-07-23 14:37:54,367 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 [2022-07-23 14:37:54,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:37:54,368 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:37:54,377 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:37:54,377 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0#1=0} Honda state: {ULTIMATE.start_main_~s__hit~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:37:54,394 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 [2022-07-23 14:37:54,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:54,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:54,396 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) [2022-07-23 14:37:54,397 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 [2022-07-23 14:37:54,398 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:37:54,398 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:37:54,445 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 [2022-07-23 14:37:54,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:54,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:54,447 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) [2022-07-23 14:37:54,448 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 [2022-07-23 14:37:54,453 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:37:54,453 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:37:54,499 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:37:54,553 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 [2022-07-23 14:37:54,554 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:37:54,554 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:37:54,554 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:37:54,554 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:37:54,554 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:37:54,554 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:54,554 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:37:54,554 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:37:54,554 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2022-07-23 14:37:54,554 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:37:54,554 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:37:54,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:54,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:54,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:54,626 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:37:54,627 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:37:54,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:54,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:54,631 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) [2022-07-23 14:37:54,639 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:37:54,648 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:37:54,648 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:37:54,648 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:37:54,648 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-07-23 14:37:54,648 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:37:54,650 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-07-23 14:37:54,650 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:37:54,651 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 [2022-07-23 14:37:54,667 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:37:54,696 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 [2022-07-23 14:37:54,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:54,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:54,698 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) [2022-07-23 14:37:54,700 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 [2022-07-23 14:37:54,701 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:37:54,709 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:37:54,709 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:37:54,710 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:37:54,710 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:37:54,710 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:37:54,711 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:37:54,711 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:37:54,722 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:37:54,739 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 [2022-07-23 14:37:54,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:54,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:54,741 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) [2022-07-23 14:37:54,741 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 [2022-07-23 14:37:54,743 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:37:54,749 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:37:54,750 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:37:54,750 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:37:54,750 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:37:54,750 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:37:54,751 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:37:54,751 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:37:54,755 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:37:54,758 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:37:54,758 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:37:54,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:54,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:54,759 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) [2022-07-23 14:37:54,761 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 [2022-07-23 14:37:54,763 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:37:54,763 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:37:54,763 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:37:54,763 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = -1*ULTIMATE.start_main_~s__state~0#1 + 8489 Supporting invariants [] [2022-07-23 14:37:54,792 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 [2022-07-23 14:37:54,793 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:37:54,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:37:54,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:37:54,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:37:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:37:54,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:37:54,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:37:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:37:54,875 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 [2022-07-23 14:37:54,875 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 57 transitions. cyclomatic complexity: 23 Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:54,920 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 57 transitions. cyclomatic complexity: 23. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 104 states and 155 transitions. Complement of second has 7 states. [2022-07-23 14:37:54,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-23 14:37:54,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:54,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2022-07-23 14:37:54,922 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 5 letters. [2022-07-23 14:37:54,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:37:54,923 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 8 letters. Loop has 5 letters. [2022-07-23 14:37:54,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:37:54,923 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 10 letters. [2022-07-23 14:37:54,924 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:37:54,924 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 155 transitions. [2022-07-23 14:37:54,927 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-07-23 14:37:54,929 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 77 states and 121 transitions. [2022-07-23 14:37:54,929 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2022-07-23 14:37:54,929 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2022-07-23 14:37:54,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 121 transitions. [2022-07-23 14:37:54,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:37:54,930 INFO L369 hiAutomatonCegarLoop]: Abstraction has 77 states and 121 transitions. [2022-07-23 14:37:54,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 121 transitions. [2022-07-23 14:37:54,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 54. [2022-07-23 14:37:54,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 53 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:54,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 86 transitions. [2022-07-23 14:37:54,935 INFO L392 hiAutomatonCegarLoop]: Abstraction has 54 states and 86 transitions. [2022-07-23 14:37:54,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 14:37:54,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 14:37:54,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 14:37:54,939 INFO L87 Difference]: Start difference. First operand 54 states and 86 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:54,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 14:37:54,962 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2022-07-23 14:37:54,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 14:37:54,963 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 128 transitions. [2022-07-23 14:37:54,965 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2022-07-23 14:37:54,966 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 87 states and 125 transitions. [2022-07-23 14:37:54,966 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2022-07-23 14:37:54,966 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2022-07-23 14:37:54,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 125 transitions. [2022-07-23 14:37:54,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:37:54,967 INFO L369 hiAutomatonCegarLoop]: Abstraction has 87 states and 125 transitions. [2022-07-23 14:37:54,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 125 transitions. [2022-07-23 14:37:54,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2022-07-23 14:37:54,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 85 states have (on average 1.4470588235294117) internal successors, (123), 84 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:54,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 123 transitions. [2022-07-23 14:37:54,972 INFO L392 hiAutomatonCegarLoop]: Abstraction has 85 states and 123 transitions. [2022-07-23 14:37:54,972 INFO L374 stractBuchiCegarLoop]: Abstraction has 85 states and 123 transitions. [2022-07-23 14:37:54,972 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-23 14:37:54,973 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 85 states and 123 transitions. [2022-07-23 14:37:54,974 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2022-07-23 14:37:54,974 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:37:54,974 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:37:54,974 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-23 14:37:54,974 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-07-23 14:37:54,974 INFO L752 eck$LassoCheckResult]: Stem: 459#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 460#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 481#L111 assume !false; 455#L30 [2022-07-23 14:37:54,975 INFO L754 eck$LassoCheckResult]: Loop: 455#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 456#L36 assume !(8466 == main_~s__state~0#1); 478#L41 assume 8512 == main_~s__state~0#1; 482#L42 main_~tmp___1~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 476#L81 assume 0 != main_~tmp___1~0#1;main_~s__state~0#1 := 8466; 465#L111 assume !false; 455#L30 [2022-07-23 14:37:54,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:54,975 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 2 times [2022-07-23 14:37:54,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:54,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381021095] [2022-07-23 14:37:54,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:54,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:54,981 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:37:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:54,986 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:37:54,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:54,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1365729718, now seen corresponding path program 1 times [2022-07-23 14:37:54,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:54,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646069785] [2022-07-23 14:37:54,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:54,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:54,992 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:37:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:54,995 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:37:54,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:54,996 INFO L85 PathProgramCache]: Analyzing trace with hash 644971805, now seen corresponding path program 1 times [2022-07-23 14:37:54,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:54,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767051907] [2022-07-23 14:37:54,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:54,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:37:55,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:37:55,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 14:37:55,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767051907] [2022-07-23 14:37:55,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767051907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 14:37:55,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 14:37:55,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 14:37:55,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202521142] [2022-07-23 14:37:55,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 14:37:55,077 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:37:55,077 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:37:55,077 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:37:55,077 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:37:55,077 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:37:55,077 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:55,077 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:37:55,077 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:37:55,077 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2022-07-23 14:37:55,077 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:37:55,077 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:37:55,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:55,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:55,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-07-23 14:37:55,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:55,143 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:37:55,143 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:37:55,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:55,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:55,148 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) [2022-07-23 14:37:55,153 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 [2022-07-23 14:37:55,154 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:37:55,154 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:37:55,168 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:37:55,168 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~blastFlag~0#1=2} Honda state: {ULTIMATE.start_main_~blastFlag~0#1=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:37:55,184 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 [2022-07-23 14:37:55,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:55,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:55,186 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) [2022-07-23 14:37:55,186 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 [2022-07-23 14:37:55,189 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:37:55,190 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:37:55,204 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:37:55,204 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5#1=5, ULTIMATE.start_main_~tmp___1~0#1=5} Honda state: {ULTIMATE.start_main_#t~nondet5#1=5, ULTIMATE.start_main_~tmp___1~0#1=5} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:37:55,232 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 [2022-07-23 14:37:55,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:55,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:55,234 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) [2022-07-23 14:37:55,235 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 [2022-07-23 14:37:55,240 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:37:55,240 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:37:55,295 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 [2022-07-23 14:37:55,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:55,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:55,297 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) [2022-07-23 14:37:55,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:37:55,302 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:37:55,315 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 [2022-07-23 14:37:55,329 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:37:55,355 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 [2022-07-23 14:37:55,356 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:37:55,356 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:37:55,356 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:37:55,356 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:37:55,356 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:37:55,356 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:55,356 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:37:55,356 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:37:55,356 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2022-07-23 14:37:55,356 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:37:55,356 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:37:55,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:55,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:55,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:55,417 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:37:55,417 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:37:55,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:55,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:55,420 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) [2022-07-23 14:37:55,431 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:37:55,439 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:37:55,439 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:37:55,440 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:37:55,440 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-07-23 14:37:55,440 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:37:55,442 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-07-23 14:37:55,442 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:37:55,445 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 [2022-07-23 14:37:55,453 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:37:55,480 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 [2022-07-23 14:37:55,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:55,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:55,482 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) [2022-07-23 14:37:55,485 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:37:55,494 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:37:55,494 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:37:55,494 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:37:55,494 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:37:55,494 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:37:55,495 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:37:55,495 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:37:55,496 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 [2022-07-23 14:37:55,505 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:37:55,531 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 [2022-07-23 14:37:55,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:55,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:55,533 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) [2022-07-23 14:37:55,542 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:37:55,551 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:37:55,551 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:37:55,551 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:37:55,551 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:37:55,551 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:37:55,552 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:37:55,552 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:37:55,556 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 [2022-07-23 14:37:55,563 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:37:55,565 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-23 14:37:55,565 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:37:55,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:55,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:55,568 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) [2022-07-23 14:37:55,581 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:37:55,581 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:37:55,581 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:37:55,581 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = 1*ULTIMATE.start_main_~s__state~0#1 Supporting invariants [] [2022-07-23 14:37:55,599 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 [2022-07-23 14:37:55,605 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 [2022-07-23 14:37:55,606 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:37:55,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:37:55,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:37:55,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:37:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:37:55,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:37:55,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:37:55,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:37:55,673 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 [2022-07-23 14:37:55,673 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 123 transitions. cyclomatic complexity: 44 Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:55,726 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 123 transitions. cyclomatic complexity: 44. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 170 states and 232 transitions. Complement of second has 9 states. [2022-07-23 14:37:55,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-07-23 14:37:55,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:55,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2022-07-23 14:37:55,728 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 6 letters. [2022-07-23 14:37:55,728 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:37:55,728 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 9 letters. Loop has 6 letters. [2022-07-23 14:37:55,728 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:37:55,728 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 12 letters. [2022-07-23 14:37:55,729 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:37:55,729 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 170 states and 232 transitions. [2022-07-23 14:37:55,731 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2022-07-23 14:37:55,732 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 170 states to 141 states and 196 transitions. [2022-07-23 14:37:55,732 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 47 [2022-07-23 14:37:55,733 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2022-07-23 14:37:55,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 196 transitions. [2022-07-23 14:37:55,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:37:55,733 INFO L369 hiAutomatonCegarLoop]: Abstraction has 141 states and 196 transitions. [2022-07-23 14:37:55,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states and 196 transitions. [2022-07-23 14:37:55,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 105. [2022-07-23 14:37:55,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 105 states have (on average 1.4095238095238096) internal successors, (148), 104 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:55,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 148 transitions. [2022-07-23 14:37:55,739 INFO L392 hiAutomatonCegarLoop]: Abstraction has 105 states and 148 transitions. [2022-07-23 14:37:55,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 14:37:55,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 14:37:55,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 14:37:55,740 INFO L87 Difference]: Start difference. First operand 105 states and 148 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:55,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 14:37:55,763 INFO L93 Difference]: Finished difference Result 65 states and 94 transitions. [2022-07-23 14:37:55,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 14:37:55,766 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 94 transitions. [2022-07-23 14:37:55,768 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2022-07-23 14:37:55,771 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 61 states and 90 transitions. [2022-07-23 14:37:55,771 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2022-07-23 14:37:55,771 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2022-07-23 14:37:55,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 90 transitions. [2022-07-23 14:37:55,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:37:55,772 INFO L369 hiAutomatonCegarLoop]: Abstraction has 61 states and 90 transitions. [2022-07-23 14:37:55,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 90 transitions. [2022-07-23 14:37:55,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-07-23 14:37:55,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 60 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:55,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 90 transitions. [2022-07-23 14:37:55,780 INFO L392 hiAutomatonCegarLoop]: Abstraction has 61 states and 90 transitions. [2022-07-23 14:37:55,780 INFO L374 stractBuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2022-07-23 14:37:55,780 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-23 14:37:55,780 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 61 states and 90 transitions. [2022-07-23 14:37:55,780 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2022-07-23 14:37:55,780 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:37:55,780 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:37:55,781 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-07-23 14:37:55,781 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-07-23 14:37:55,781 INFO L752 eck$LassoCheckResult]: Stem: 941#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 942#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 947#L111 assume !false; 939#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 940#L36 assume 8466 == main_~s__state~0#1; 969#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 987#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 983#L111 assume !false; 982#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 980#L36 assume !(8466 == main_~s__state~0#1); 975#L41 [2022-07-23 14:37:55,781 INFO L754 eck$LassoCheckResult]: Loop: 975#L41 assume 8512 == main_~s__state~0#1; 970#L42 main_~tmp___1~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 961#L81 assume !(0 != main_~tmp___1~0#1);main_~s__state~0#1 := 8640; 963#L111 assume !false; 937#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 938#L36 assume !(8466 == main_~s__state~0#1); 975#L41 [2022-07-23 14:37:55,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:55,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1523382593, now seen corresponding path program 1 times [2022-07-23 14:37:55,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:55,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668621834] [2022-07-23 14:37:55,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:55,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:55,795 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:37:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:55,814 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:37:55,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:55,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1623382260, now seen corresponding path program 1 times [2022-07-23 14:37:55,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:55,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039564947] [2022-07-23 14:37:55,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:55,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:55,818 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:37:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:55,822 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:37:55,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:55,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1141286606, now seen corresponding path program 1 times [2022-07-23 14:37:55,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:55,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111954922] [2022-07-23 14:37:55,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:55,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:37:55,874 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:37:55,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 14:37:55,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111954922] [2022-07-23 14:37:55,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111954922] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 14:37:55,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 14:37:55,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 14:37:55,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892193562] [2022-07-23 14:37:55,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 14:37:55,909 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:37:55,909 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:37:55,909 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:37:55,910 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:37:55,910 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:37:55,910 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:55,910 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:37:55,910 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:37:55,910 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2022-07-23 14:37:55,910 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:37:55,910 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:37:55,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:55,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:55,946 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:37:55,947 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:37:55,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:55,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:55,952 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) [2022-07-23 14:37:55,963 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:37:55,963 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:37:55,978 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 [2022-07-23 14:37:55,983 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:37:55,983 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5#1=0, ULTIMATE.start_main_~tmp___1~0#1=0} Honda state: {ULTIMATE.start_main_#t~nondet5#1=0, ULTIMATE.start_main_~tmp___1~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:37:56,011 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 [2022-07-23 14:37:56,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:56,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:56,013 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) [2022-07-23 14:37:56,015 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 [2022-07-23 14:37:56,017 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:37:56,017 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:37:56,066 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 [2022-07-23 14:37:56,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:56,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:56,067 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) [2022-07-23 14:37:56,072 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:37:56,072 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:37:56,079 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 [2022-07-23 14:37:56,095 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:37:56,119 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 [2022-07-23 14:37:56,119 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:37:56,120 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:37:56,120 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:37:56,120 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:37:56,120 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:37:56,120 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:56,120 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:37:56,120 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:37:56,120 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2022-07-23 14:37:56,120 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:37:56,120 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:37:56,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:56,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:56,165 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:37:56,165 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:37:56,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:56,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:56,167 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) [2022-07-23 14:37:56,176 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:37:56,184 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:37:56,184 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:37:56,184 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:37:56,184 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:37:56,184 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:37:56,185 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:37:56,185 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:37:56,189 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 [2022-07-23 14:37:56,201 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:37:56,229 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 [2022-07-23 14:37:56,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:56,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:56,231 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) [2022-07-23 14:37:56,231 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 [2022-07-23 14:37:56,233 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:37:56,241 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:37:56,241 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:37:56,241 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:37:56,241 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:37:56,241 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:37:56,244 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:37:56,244 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:37:56,259 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:37:56,267 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:37:56,267 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:37:56,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:56,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:56,272 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) [2022-07-23 14:37:56,274 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 [2022-07-23 14:37:56,275 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:37:56,275 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:37:56,275 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:37:56,275 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = -1*ULTIMATE.start_main_~s__state~0#1 + 8576 Supporting invariants [] [2022-07-23 14:37:56,304 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 [2022-07-23 14:37:56,305 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:37:56,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:37:56,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:37:56,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:37:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:37:56,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:37:56,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:37:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:37:56,387 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 [2022-07-23 14:37:56,388 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 61 states and 90 transitions. cyclomatic complexity: 33 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:56,455 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 61 states and 90 transitions. cyclomatic complexity: 33. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 183 states and 281 transitions. Complement of second has 9 states. [2022-07-23 14:37:56,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-07-23 14:37:56,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:56,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2022-07-23 14:37:56,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 6 letters. [2022-07-23 14:37:56,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:37:56,459 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 16 letters. Loop has 6 letters. [2022-07-23 14:37:56,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:37:56,460 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 12 letters. [2022-07-23 14:37:56,461 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:37:56,461 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 281 transitions. [2022-07-23 14:37:56,464 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2022-07-23 14:37:56,466 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 163 states and 245 transitions. [2022-07-23 14:37:56,466 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2022-07-23 14:37:56,466 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2022-07-23 14:37:56,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 163 states and 245 transitions. [2022-07-23 14:37:56,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:37:56,466 INFO L369 hiAutomatonCegarLoop]: Abstraction has 163 states and 245 transitions. [2022-07-23 14:37:56,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states and 245 transitions. [2022-07-23 14:37:56,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 125. [2022-07-23 14:37:56,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 125 states have (on average 1.464) internal successors, (183), 124 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:56,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 183 transitions. [2022-07-23 14:37:56,480 INFO L392 hiAutomatonCegarLoop]: Abstraction has 125 states and 183 transitions. [2022-07-23 14:37:56,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 14:37:56,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 14:37:56,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 14:37:56,481 INFO L87 Difference]: Start difference. First operand 125 states and 183 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:56,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 14:37:56,510 INFO L93 Difference]: Finished difference Result 164 states and 223 transitions. [2022-07-23 14:37:56,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 14:37:56,513 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 164 states and 223 transitions. [2022-07-23 14:37:56,515 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 36 [2022-07-23 14:37:56,517 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 164 states to 154 states and 211 transitions. [2022-07-23 14:37:56,517 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2022-07-23 14:37:56,518 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2022-07-23 14:37:56,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 154 states and 211 transitions. [2022-07-23 14:37:56,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:37:56,518 INFO L369 hiAutomatonCegarLoop]: Abstraction has 154 states and 211 transitions. [2022-07-23 14:37:56,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states and 211 transitions. [2022-07-23 14:37:56,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 134. [2022-07-23 14:37:56,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 134 states have (on average 1.4253731343283582) internal successors, (191), 133 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:56,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 191 transitions. [2022-07-23 14:37:56,532 INFO L392 hiAutomatonCegarLoop]: Abstraction has 134 states and 191 transitions. [2022-07-23 14:37:56,532 INFO L374 stractBuchiCegarLoop]: Abstraction has 134 states and 191 transitions. [2022-07-23 14:37:56,534 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-23 14:37:56,534 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 134 states and 191 transitions. [2022-07-23 14:37:56,536 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 35 [2022-07-23 14:37:56,536 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:37:56,536 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:37:56,537 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 14:37:56,537 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 14:37:56,537 INFO L752 eck$LassoCheckResult]: Stem: 1552#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 1553#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 1577#L111 assume !false; 1674#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1672#L36 assume 8466 == main_~s__state~0#1; 1648#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 1645#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1558#L111 [2022-07-23 14:37:56,538 INFO L754 eck$LassoCheckResult]: Loop: 1558#L111 assume !false; 1548#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1549#L36 assume !(8466 == main_~s__state~0#1); 1575#L41 assume !(8512 == main_~s__state~0#1); 1591#L57 assume !(8640 == main_~s__state~0#1); 1554#L61 assume 8656 == main_~s__state~0#1; 1555#L62 assume 2 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 3; 1564#L100-1 assume 4 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 5; 1566#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 1590#L111 assume !false; 1624#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1625#L36 assume 8466 == main_~s__state~0#1; 1581#L37 assume !(0 == main_~blastFlag~0#1); 1582#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1558#L111 [2022-07-23 14:37:56,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:56,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 1 times [2022-07-23 14:37:56,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:56,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146855214] [2022-07-23 14:37:56,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:56,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:56,580 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:37:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:56,587 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:37:56,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:56,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1982564596, now seen corresponding path program 1 times [2022-07-23 14:37:56,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:56,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295092255] [2022-07-23 14:37:56,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:56,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:37:56,602 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 [2022-07-23 14:37:56,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:37:56,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 14:37:56,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295092255] [2022-07-23 14:37:56,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295092255] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 14:37:56,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 14:37:56,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 14:37:56,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982751918] [2022-07-23 14:37:56,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 14:37:56,619 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-23 14:37:56,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 14:37:56,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 14:37:56,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 14:37:56,620 INFO L87 Difference]: Start difference. First operand 134 states and 191 transitions. cyclomatic complexity: 65 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:56,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-07-23 14:37:56,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 14:37:56,640 INFO L93 Difference]: Finished difference Result 182 states and 254 transitions. [2022-07-23 14:37:56,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 14:37:56,641 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 254 transitions. [2022-07-23 14:37:56,642 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2022-07-23 14:37:56,643 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 182 states and 254 transitions. [2022-07-23 14:37:56,644 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 70 [2022-07-23 14:37:56,644 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 70 [2022-07-23 14:37:56,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 254 transitions. [2022-07-23 14:37:56,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:37:56,644 INFO L369 hiAutomatonCegarLoop]: Abstraction has 182 states and 254 transitions. [2022-07-23 14:37:56,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 254 transitions. [2022-07-23 14:37:56,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-07-23 14:37:56,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 182 states have (on average 1.3956043956043955) internal successors, (254), 181 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:56,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 254 transitions. [2022-07-23 14:37:56,647 INFO L392 hiAutomatonCegarLoop]: Abstraction has 182 states and 254 transitions. [2022-07-23 14:37:56,647 INFO L374 stractBuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2022-07-23 14:37:56,648 INFO L287 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-07-23 14:37:56,648 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 182 states and 254 transitions. [2022-07-23 14:37:56,649 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2022-07-23 14:37:56,649 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:37:56,649 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:37:56,649 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 14:37:56,649 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 14:37:56,649 INFO L752 eck$LassoCheckResult]: Stem: 1874#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 1875#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 1880#L111 assume !false; 1881#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2008#L36 assume 8466 == main_~s__state~0#1; 1992#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 1989#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1940#L111 [2022-07-23 14:37:56,649 INFO L754 eck$LassoCheckResult]: Loop: 1940#L111 assume !false; 1960#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1958#L36 assume !(8466 == main_~s__state~0#1); 1955#L41 assume !(8512 == main_~s__state~0#1); 1952#L57 assume !(8640 == main_~s__state~0#1); 1876#L61 assume 8656 == main_~s__state~0#1; 1877#L62 assume 2 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 3; 1883#L100-1 assume !(4 == main_~blastFlag~0#1); 1884#L107 assume !(5 == main_~blastFlag~0#1); 1918#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 1919#L111 assume !false; 1978#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1979#L36 assume 8466 == main_~s__state~0#1; 1968#L37 assume !(0 == main_~blastFlag~0#1); 1965#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1940#L111 [2022-07-23 14:37:56,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:56,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 2 times [2022-07-23 14:37:56,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:56,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158228207] [2022-07-23 14:37:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:56,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:56,661 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:37:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:56,673 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:37:56,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:56,674 INFO L85 PathProgramCache]: Analyzing trace with hash 862619384, now seen corresponding path program 1 times [2022-07-23 14:37:56,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:56,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175730757] [2022-07-23 14:37:56,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:56,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:37:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:37:56,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 14:37:56,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175730757] [2022-07-23 14:37:56,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175730757] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 14:37:56,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 14:37:56,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 14:37:56,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492751394] [2022-07-23 14:37:56,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 14:37:56,710 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-23 14:37:56,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 14:37:56,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 14:37:56,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 14:37:56,711 INFO L87 Difference]: Start difference. First operand 182 states and 254 transitions. cyclomatic complexity: 80 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:56,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 14:37:56,732 INFO L93 Difference]: Finished difference Result 157 states and 202 transitions. [2022-07-23 14:37:56,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 14:37:56,733 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 157 states and 202 transitions. [2022-07-23 14:37:56,734 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2022-07-23 14:37:56,735 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 157 states to 111 states and 141 transitions. [2022-07-23 14:37:56,735 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 58 [2022-07-23 14:37:56,735 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2022-07-23 14:37:56,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 141 transitions. [2022-07-23 14:37:56,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:37:56,735 INFO L369 hiAutomatonCegarLoop]: Abstraction has 111 states and 141 transitions. [2022-07-23 14:37:56,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 141 transitions. [2022-07-23 14:37:56,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2022-07-23 14:37:56,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 105 states have (on average 1.276190476190476) internal successors, (134), 104 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:56,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 134 transitions. [2022-07-23 14:37:56,737 INFO L392 hiAutomatonCegarLoop]: Abstraction has 105 states and 134 transitions. [2022-07-23 14:37:56,737 INFO L374 stractBuchiCegarLoop]: Abstraction has 105 states and 134 transitions. [2022-07-23 14:37:56,737 INFO L287 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-07-23 14:37:56,737 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 105 states and 134 transitions. [2022-07-23 14:37:56,738 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2022-07-23 14:37:56,738 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:37:56,738 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:37:56,739 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 14:37:56,739 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 14:37:56,739 INFO L752 eck$LassoCheckResult]: Stem: 2215#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 2216#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 2234#L111 assume !false; 2300#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2237#L36 assume 8466 == main_~s__state~0#1; 2238#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 2266#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 2268#L111 [2022-07-23 14:37:56,739 INFO L754 eck$LassoCheckResult]: Loop: 2268#L111 assume !false; 2310#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2308#L36 assume !(8466 == main_~s__state~0#1); 2306#L41 assume !(8512 == main_~s__state~0#1); 2252#L57 assume !(8640 == main_~s__state~0#1); 2221#L61 assume 8656 == main_~s__state~0#1; 2222#L62 assume 2 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 3; 2228#L100-1 assume !(4 == main_~blastFlag~0#1); 2229#L107 assume !(5 == main_~blastFlag~0#1); 2245#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 2223#L111 assume !false; 2224#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2235#L36 assume !(8466 == main_~s__state~0#1); 2236#L41 assume !(8512 == main_~s__state~0#1); 2246#L57 assume 8640 == main_~s__state~0#1; 2304#L58 assume !(3 == main_~blastFlag~0#1); 2311#L89-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8656; 2268#L111 [2022-07-23 14:37:56,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:56,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 3 times [2022-07-23 14:37:56,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:56,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463548621] [2022-07-23 14:37:56,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:56,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:56,744 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:37:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:56,748 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:37:56,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:56,748 INFO L85 PathProgramCache]: Analyzing trace with hash 49895967, now seen corresponding path program 1 times [2022-07-23 14:37:56,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:56,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736611922] [2022-07-23 14:37:56,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:56,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:37:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:37:56,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 14:37:56,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736611922] [2022-07-23 14:37:56,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736611922] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 14:37:56,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 14:37:56,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 14:37:56,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194009537] [2022-07-23 14:37:56,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 14:37:56,762 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-23 14:37:56,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 14:37:56,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 14:37:56,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 14:37:56,763 INFO L87 Difference]: Start difference. First operand 105 states and 134 transitions. cyclomatic complexity: 36 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:56,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 14:37:56,777 INFO L93 Difference]: Finished difference Result 116 states and 146 transitions. [2022-07-23 14:37:56,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 14:37:56,778 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 146 transitions. [2022-07-23 14:37:56,779 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2022-07-23 14:37:56,779 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 116 states and 146 transitions. [2022-07-23 14:37:56,780 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2022-07-23 14:37:56,780 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 64 [2022-07-23 14:37:56,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 146 transitions. [2022-07-23 14:37:56,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:37:56,780 INFO L369 hiAutomatonCegarLoop]: Abstraction has 116 states and 146 transitions. [2022-07-23 14:37:56,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states and 146 transitions. [2022-07-23 14:37:56,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-07-23 14:37:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 116 states have (on average 1.2586206896551724) internal successors, (146), 115 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:56,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2022-07-23 14:37:56,782 INFO L392 hiAutomatonCegarLoop]: Abstraction has 116 states and 146 transitions. [2022-07-23 14:37:56,782 INFO L374 stractBuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2022-07-23 14:37:56,782 INFO L287 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-07-23 14:37:56,782 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 146 transitions. [2022-07-23 14:37:56,783 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2022-07-23 14:37:56,783 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:37:56,783 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:37:56,783 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 14:37:56,783 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 14:37:56,784 INFO L752 eck$LassoCheckResult]: Stem: 2442#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 2443#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 2460#L111 assume !false; 2541#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2540#L36 assume 8466 == main_~s__state~0#1; 2500#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 2495#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 2450#L111 [2022-07-23 14:37:56,784 INFO L754 eck$LassoCheckResult]: Loop: 2450#L111 assume !false; 2444#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2445#L36 assume !(8466 == main_~s__state~0#1); 2461#L41 assume !(8512 == main_~s__state~0#1); 2472#L57 assume !(8640 == main_~s__state~0#1); 2478#L61 assume 8656 == main_~s__state~0#1; 2546#L62 assume !(2 == main_~blastFlag~0#1); 2454#L100-1 assume !(4 == main_~blastFlag~0#1); 2455#L107 assume !(5 == main_~blastFlag~0#1); 2471#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 2477#L111 assume !false; 2525#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2522#L36 assume !(8466 == main_~s__state~0#1); 2515#L41 assume !(8512 == main_~s__state~0#1); 2512#L57 assume 8640 == main_~s__state~0#1; 2482#L58 assume !(3 == main_~blastFlag~0#1); 2479#L89-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8656; 2450#L111 [2022-07-23 14:37:56,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:56,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 4 times [2022-07-23 14:37:56,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:56,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425607466] [2022-07-23 14:37:56,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:56,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:56,789 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:37:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:56,795 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:37:56,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:56,796 INFO L85 PathProgramCache]: Analyzing trace with hash 750960545, now seen corresponding path program 1 times [2022-07-23 14:37:56,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:56,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049840118] [2022-07-23 14:37:56,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:56,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:37:56,807 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:37:56,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 14:37:56,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049840118] [2022-07-23 14:37:56,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049840118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 14:37:56,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 14:37:56,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 14:37:56,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24903405] [2022-07-23 14:37:56,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 14:37:56,808 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-23 14:37:56,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 14:37:56,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 14:37:56,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 14:37:56,809 INFO L87 Difference]: Start difference. First operand 116 states and 146 transitions. cyclomatic complexity: 38 Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:56,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 14:37:56,815 INFO L93 Difference]: Finished difference Result 142 states and 175 transitions. [2022-07-23 14:37:56,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 14:37:56,816 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142 states and 175 transitions. [2022-07-23 14:37:56,817 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2022-07-23 14:37:56,818 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142 states to 137 states and 167 transitions. [2022-07-23 14:37:56,818 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2022-07-23 14:37:56,819 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2022-07-23 14:37:56,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 137 states and 167 transitions. [2022-07-23 14:37:56,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:37:56,819 INFO L369 hiAutomatonCegarLoop]: Abstraction has 137 states and 167 transitions. [2022-07-23 14:37:56,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states and 167 transitions. [2022-07-23 14:37:56,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 109. [2022-07-23 14:37:56,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 108 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:56,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 136 transitions. [2022-07-23 14:37:56,821 INFO L392 hiAutomatonCegarLoop]: Abstraction has 109 states and 136 transitions. [2022-07-23 14:37:56,821 INFO L374 stractBuchiCegarLoop]: Abstraction has 109 states and 136 transitions. [2022-07-23 14:37:56,822 INFO L287 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-07-23 14:37:56,822 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 109 states and 136 transitions. [2022-07-23 14:37:56,822 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2022-07-23 14:37:56,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:37:56,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:37:56,823 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 14:37:56,823 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 14:37:56,823 INFO L752 eck$LassoCheckResult]: Stem: 2706#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 2707#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 2725#L111 assume !false; 2780#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2775#L36 assume 8466 == main_~s__state~0#1; 2773#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 2770#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 2714#L111 [2022-07-23 14:37:56,823 INFO L754 eck$LassoCheckResult]: Loop: 2714#L111 assume !false; 2708#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2709#L36 assume !(8466 == main_~s__state~0#1); 2726#L41 assume !(8512 == main_~s__state~0#1); 2735#L57 assume !(8640 == main_~s__state~0#1); 2712#L61 assume 8656 == main_~s__state~0#1; 2713#L62 assume !(2 == main_~blastFlag~0#1); 2807#L100-1 assume !(4 == main_~blastFlag~0#1); 2733#L107 assume !(5 == main_~blastFlag~0#1); 2734#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 2714#L111 [2022-07-23 14:37:56,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:56,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 5 times [2022-07-23 14:37:56,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:56,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804898584] [2022-07-23 14:37:56,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:56,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:56,828 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:37:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:56,832 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:37:56,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:56,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1947655960, now seen corresponding path program 1 times [2022-07-23 14:37:56,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:56,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160348822] [2022-07-23 14:37:56,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:56,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:56,836 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:37:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:56,838 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:37:56,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:56,839 INFO L85 PathProgramCache]: Analyzing trace with hash 163931656, now seen corresponding path program 1 times [2022-07-23 14:37:56,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:56,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128638475] [2022-07-23 14:37:56,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:56,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:37:56,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:37:56,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 14:37:56,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128638475] [2022-07-23 14:37:56,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128638475] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 14:37:56,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 14:37:56,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 14:37:56,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289976565] [2022-07-23 14:37:56,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 14:37:56,893 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:37:56,893 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:37:56,894 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:37:56,894 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:37:56,894 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:37:56,894 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:56,894 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:37:56,894 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:37:56,894 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2022-07-23 14:37:56,894 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:37:56,894 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:37:56,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:56,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:56,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:56,973 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:37:56,973 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:37:56,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:56,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:56,975 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) [2022-07-23 14:37:56,984 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:37:56,984 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:37:56,995 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 [2022-07-23 14:37:57,024 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 [2022-07-23 14:37:57,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:57,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:57,026 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) [2022-07-23 14:37:57,026 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 [2022-07-23 14:37:57,029 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:37:57,029 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:37:57,036 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:37:57,052 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 [2022-07-23 14:37:57,053 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:37:57,053 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:37:57,053 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:37:57,053 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:37:57,053 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:37:57,053 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:57,053 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:37:57,053 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:37:57,053 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2022-07-23 14:37:57,053 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:37:57,053 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:37:57,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:57,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:57,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:37:57,135 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:37:57,135 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:37:57,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:57,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:57,140 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) [2022-07-23 14:37:57,141 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 [2022-07-23 14:37:57,142 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:37:57,149 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:37:57,149 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:37:57,149 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:37:57,149 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:37:57,149 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:37:57,151 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:37:57,151 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:37:57,171 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:37:57,174 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-23 14:37:57,174 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:37:57,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:37:57,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:37:57,177 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) [2022-07-23 14:37:57,177 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 [2022-07-23 14:37:57,178 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:37:57,178 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:37:57,178 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:37:57,179 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = 1*ULTIMATE.start_main_~s__state~0#1 Supporting invariants [] [2022-07-23 14:37:57,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2022-07-23 14:37:57,195 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:37:57,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:37:57,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:37:57,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:37:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:37:57,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:37:57,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:37:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:37:57,271 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 [2022-07-23 14:37:57,271 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 109 states and 136 transitions. cyclomatic complexity: 36 Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:57,294 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 109 states and 136 transitions. cyclomatic complexity: 36. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 148 states and 178 transitions. Complement of second has 6 states. [2022-07-23 14:37:57,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-23 14:37:57,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:57,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2022-07-23 14:37:57,295 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 10 letters. [2022-07-23 14:37:57,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:37:57,295 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 17 letters. Loop has 10 letters. [2022-07-23 14:37:57,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:37:57,295 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 20 letters. [2022-07-23 14:37:57,296 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:37:57,296 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 178 transitions. [2022-07-23 14:37:57,297 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2022-07-23 14:37:57,298 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 109 states and 132 transitions. [2022-07-23 14:37:57,298 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2022-07-23 14:37:57,298 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2022-07-23 14:37:57,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 109 states and 132 transitions. [2022-07-23 14:37:57,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:37:57,298 INFO L369 hiAutomatonCegarLoop]: Abstraction has 109 states and 132 transitions. [2022-07-23 14:37:57,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states and 132 transitions. [2022-07-23 14:37:57,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2022-07-23 14:37:57,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 108 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:57,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2022-07-23 14:37:57,300 INFO L392 hiAutomatonCegarLoop]: Abstraction has 109 states and 132 transitions. [2022-07-23 14:37:57,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 14:37:57,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 14:37:57,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 14:37:57,301 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:57,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 14:37:57,317 INFO L93 Difference]: Finished difference Result 92 states and 106 transitions. [2022-07-23 14:37:57,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 14:37:57,318 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92 states and 106 transitions. [2022-07-23 14:37:57,319 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2022-07-23 14:37:57,320 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92 states to 62 states and 71 transitions. [2022-07-23 14:37:57,320 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2022-07-23 14:37:57,320 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2022-07-23 14:37:57,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 71 transitions. [2022-07-23 14:37:57,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:37:57,320 INFO L369 hiAutomatonCegarLoop]: Abstraction has 62 states and 71 transitions. [2022-07-23 14:37:57,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 71 transitions. [2022-07-23 14:37:57,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-07-23 14:37:57,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 61 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:37:57,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2022-07-23 14:37:57,322 INFO L392 hiAutomatonCegarLoop]: Abstraction has 62 states and 71 transitions. [2022-07-23 14:37:57,322 INFO L374 stractBuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2022-07-23 14:37:57,322 INFO L287 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-07-23 14:37:57,322 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 62 states and 71 transitions. [2022-07-23 14:37:57,323 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2022-07-23 14:37:57,323 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:37:57,323 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:37:57,323 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 14:37:57,323 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 14:37:57,324 INFO L752 eck$LassoCheckResult]: Stem: 3244#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 3245#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 3248#L111 assume !false; 3240#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3241#L36 assume 8466 == main_~s__state~0#1; 3294#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 3293#L69-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 3291#L111 assume !false; 3250#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3292#L36 assume !(8466 == main_~s__state~0#1); 3290#L41 assume 8512 == main_~s__state~0#1; 3263#L42 [2022-07-23 14:37:57,324 INFO L754 eck$LassoCheckResult]: Loop: 3263#L42 main_~tmp___1~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 3255#L81 assume 0 != main_~tmp___1~0#1;main_~s__state~0#1 := 8466; 3256#L111 assume !false; 3300#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3297#L36 assume 8466 == main_~s__state~0#1; 3266#L37 assume !(0 == main_~blastFlag~0#1); 3267#L69-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 3272#L111 assume !false; 3299#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3298#L36 assume !(8466 == main_~s__state~0#1); 3269#L41 assume 8512 == main_~s__state~0#1; 3263#L42 [2022-07-23 14:37:57,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:57,324 INFO L85 PathProgramCache]: Analyzing trace with hash 21626939, now seen corresponding path program 1 times [2022-07-23 14:37:57,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:57,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636254631] [2022-07-23 14:37:57,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:57,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:57,332 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:37:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:57,339 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:37:57,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:57,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1294878776, now seen corresponding path program 1 times [2022-07-23 14:37:57,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:57,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542516330] [2022-07-23 14:37:57,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:57,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:57,350 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:37:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:57,352 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:37:57,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:37:57,353 INFO L85 PathProgramCache]: Analyzing trace with hash 937672638, now seen corresponding path program 1 times [2022-07-23 14:37:57,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:37:57,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375310952] [2022-07-23 14:37:57,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:37:57,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:37:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:57,359 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:37:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:37:57,364 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:37:57,400 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 [2022-07-23 14:37:57,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.07 02:37:57 BoogieIcfgContainer [2022-07-23 14:37:57,583 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-23 14:37:57,583 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 14:37:57,583 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 14:37:57,583 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 14:37:57,584 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:37:52" (3/4) ... [2022-07-23 14:37:57,586 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-07-23 14:37:57,628 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-23 14:37:57,628 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 14:37:57,629 INFO L158 Benchmark]: Toolchain (without parser) took 5290.08ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 68.7MB in the beginning and 89.2MB in the end (delta: -20.6MB). Peak memory consumption was 1.9MB. Max. memory is 16.1GB. [2022-07-23 14:37:57,629 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 107.0MB. Free memory is still 85.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:37:57,629 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.40ms. Allocated memory is still 107.0MB. Free memory was 68.5MB in the beginning and 81.5MB in the end (delta: -13.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-23 14:37:57,630 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.47ms. Allocated memory is still 107.0MB. Free memory was 81.5MB in the beginning and 79.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 14:37:57,630 INFO L158 Benchmark]: Boogie Preprocessor took 14.77ms. Allocated memory is still 107.0MB. Free memory was 79.9MB in the beginning and 79.1MB in the end (delta: 714.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:37:57,630 INFO L158 Benchmark]: RCFGBuilder took 307.60ms. Allocated memory is still 107.0MB. Free memory was 78.8MB in the beginning and 69.1MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 14:37:57,631 INFO L158 Benchmark]: BuchiAutomizer took 4650.21ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 69.1MB in the beginning and 91.3MB in the end (delta: -22.3MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. [2022-07-23 14:37:57,632 INFO L158 Benchmark]: Witness Printer took 44.65ms. Allocated memory is still 130.0MB. Free memory was 91.3MB in the beginning and 89.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 14:37:57,633 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 107.0MB. Free memory is still 85.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 228.40ms. Allocated memory is still 107.0MB. Free memory was 68.5MB in the beginning and 81.5MB in the end (delta: -13.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.47ms. Allocated memory is still 107.0MB. Free memory was 81.5MB in the beginning and 79.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.77ms. Allocated memory is still 107.0MB. Free memory was 79.9MB in the beginning and 79.1MB in the end (delta: 714.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 307.60ms. Allocated memory is still 107.0MB. Free memory was 78.8MB in the beginning and 69.1MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 4650.21ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 69.1MB in the beginning and 91.3MB in the end (delta: -22.3MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. * Witness Printer took 44.65ms. Allocated memory is still 130.0MB. Free memory was 91.3MB in the beginning and 89.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (8 trivial, 5 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * blastFlag + 1 and consists of 4 locations. One deterministic module has affine ranking function -1 * s__state + 8489 and consists of 4 locations. One deterministic module has affine ranking function s__state and consists of 5 locations. One deterministic module has affine ranking function 8576 + -1 * s__state and consists of 5 locations. One deterministic module has affine ranking function s__state and consists of 4 locations. 8 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 62 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.5s and 10 iterations. TraceHistogramMax:2. Analysis of lassos took 3.4s. Construction of modules took 0.2s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 13. Automata minimization 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 155 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 253 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 248 mSDsluCounter, 548 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 196 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 269 IncrementalHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 352 mSDtfsCounter, 269 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI4 SFLT1 conc0 concLT4 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp52 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq186 hnf91 smp100 dnf180 smp78 tf112 neg93 sie115 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 40ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 41]: 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 {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@10337418=4, NULL=0, NULL=0, s__hit=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@74e44dbb=0, s__state=8512, tmp___1=4, NULL=1, \result=0, blastFlag=2} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 41]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L21] int s__state ; [L22] int s__hit = __VERIFIER_nondet_int() ; [L23] int blastFlag ; [L24] int tmp___1; [L26] s__state = 8466 [L27] blastFlag = 0 [L29] COND TRUE 1 [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L36] COND TRUE s__state == 8466 [L69] COND TRUE blastFlag == 0 [L70] blastFlag = 2 [L72] COND FALSE !(\read(s__hit)) [L75] s__state = 8512 [L29] COND TRUE 1 [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L36] COND FALSE !(s__state == 8466) [L41] COND TRUE s__state == 8512 Loop: [L80] tmp___1 = __VERIFIER_nondet_int() [L81] COND TRUE \read(tmp___1) [L82] s__state = 8466 [L29] COND TRUE 1 [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L36] COND TRUE s__state == 8466 [L69] COND FALSE !(blastFlag == 0) [L72] COND FALSE !(\read(s__hit)) [L75] s__state = 8512 [L29] COND TRUE 1 [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L36] COND FALSE !(s__state == 8466) [L41] COND TRUE s__state == 8512 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-07-23 14:37:57,665 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)