./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 ae007674 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-dev-ae00767 [2021-12-28 09:14:50,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 09:14:50,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 09:14:50,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 09:14:50,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 09:14:50,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 09:14:50,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 09:14:50,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 09:14:50,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 09:14:50,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 09:14:50,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 09:14:50,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 09:14:50,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 09:14:50,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 09:14:50,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 09:14:50,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 09:14:50,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 09:14:50,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 09:14:50,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 09:14:50,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 09:14:50,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 09:14:50,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 09:14:50,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 09:14:50,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 09:14:50,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 09:14:50,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 09:14:50,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 09:14:50,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 09:14:50,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 09:14:50,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 09:14:50,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 09:14:50,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 09:14:50,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 09:14:50,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 09:14:50,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 09:14:50,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 09:14:50,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 09:14:50,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 09:14:50,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 09:14:50,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 09:14:50,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 09:14:50,188 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-28 09:14:50,204 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 09:14:50,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 09:14:50,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 09:14:50,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 09:14:50,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 09:14:50,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 09:14:50,206 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 09:14:50,206 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-28 09:14:50,206 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-28 09:14:50,206 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-28 09:14:50,206 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-28 09:14:50,206 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-28 09:14:50,206 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-28 09:14:50,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 09:14:50,207 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 09:14:50,207 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 09:14:50,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 09:14:50,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 09:14:50,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 09:14:50,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-28 09:14:50,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-28 09:14:50,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-28 09:14:50,224 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 09:14:50,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 09:14:50,224 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-28 09:14:50,224 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 09:14:50,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-28 09:14:50,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 09:14:50,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 09:14:50,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 09:14:50,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 09:14:50,226 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-28 09:14:50,226 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db [2021-12-28 09:14:50,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 09:14:50,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 09:14:50,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 09:14:50,545 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 09:14:50,545 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 09:14:50,546 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-12-28 09:14:50,595 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ab0b532/d8fd395826d647d0a1c9ede4a66efd53/FLAG873d3a3e9 [2021-12-28 09:14:50,949 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 09:14:50,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-12-28 09:14:50,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ab0b532/d8fd395826d647d0a1c9ede4a66efd53/FLAG873d3a3e9 [2021-12-28 09:14:51,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ab0b532/d8fd395826d647d0a1c9ede4a66efd53 [2021-12-28 09:14:51,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 09:14:51,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 09:14:51,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 09:14:51,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 09:14:51,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 09:14:51,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:14:51" (1/1) ... [2021-12-28 09:14:51,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2116d5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:51, skipping insertion in model container [2021-12-28 09:14:51,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:14:51" (1/1) ... [2021-12-28 09:14:51,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 09:14:51,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 09:14:51,534 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] [2021-12-28 09:14:51,539 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:14:51,547 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 09:14:51,603 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] [2021-12-28 09:14:51,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:14:51,620 INFO L208 MainTranslator]: Completed translation [2021-12-28 09:14:51,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:51 WrapperNode [2021-12-28 09:14:51,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 09:14:51,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 09:14:51,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 09:14:51,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 09:14:51,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:51" (1/1) ... [2021-12-28 09:14:51,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:51" (1/1) ... [2021-12-28 09:14:51,650 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 73 [2021-12-28 09:14:51,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 09:14:51,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 09:14:51,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 09:14:51,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 09:14:51,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:51" (1/1) ... [2021-12-28 09:14:51,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:51" (1/1) ... [2021-12-28 09:14:51,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:51" (1/1) ... [2021-12-28 09:14:51,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:51" (1/1) ... [2021-12-28 09:14:51,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:51" (1/1) ... [2021-12-28 09:14:51,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:51" (1/1) ... [2021-12-28 09:14:51,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:51" (1/1) ... [2021-12-28 09:14:51,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 09:14:51,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 09:14:51,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 09:14:51,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 09:14:51,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:51" (1/1) ... [2021-12-28 09:14:51,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:51,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:51,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:51,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-28 09:14:51,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 09:14:51,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 09:14:51,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 09:14:51,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 09:14:51,792 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 09:14:51,793 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 09:14:51,925 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 09:14:51,929 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 09:14:51,933 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 09:14:51,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:14:51 BoogieIcfgContainer [2021-12-28 09:14:51,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 09:14:51,944 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-28 09:14:51,944 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-28 09:14:51,960 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-28 09:14:51,961 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:14:51,961 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.12 09:14:51" (1/3) ... [2021-12-28 09:14:51,961 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b0616ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:14:51, skipping insertion in model container [2021-12-28 09:14:51,962 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:14:51,962 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:51" (2/3) ... [2021-12-28 09:14:51,962 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b0616ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:14:51, skipping insertion in model container [2021-12-28 09:14:51,962 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:14:51,962 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:14:51" (3/3) ... [2021-12-28 09:14:51,963 INFO L388 chiAutomizerObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2021-12-28 09:14:52,006 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-28 09:14:52,018 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-28 09:14:52,018 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-28 09:14:52,018 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-28 09:14:52,018 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-28 09:14:52,019 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-28 09:14:52,019 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-28 09:14:52,019 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-28 09:14:52,043 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:52,059 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-12-28 09:14:52,059 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:14:52,059 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:14:52,065 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:14:52,066 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-12-28 09:14:52,066 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-28 09:14:52,066 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:52,071 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-12-28 09:14:52,071 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:14:52,071 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:14:52,072 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:14:52,072 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-12-28 09:14:52,078 INFO L791 eck$LassoCheckResult]: Stem: 4#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); 12#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; 7#L111true [2021-12-28 09:14:52,078 INFO L793 eck$LassoCheckResult]: Loop: 7#L111true assume !false; 5#L30true assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 13#L36true assume 8466 == main_~s__state~0#1; 15#L37true assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 18#L69-1true assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 7#L111true [2021-12-28 09:14:52,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:52,083 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-28 09:14:52,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:52,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476180078] [2021-12-28 09:14:52,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:52,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:52,150 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:52,169 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:52,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:52,181 INFO L85 PathProgramCache]: Analyzing trace with hash 39284085, now seen corresponding path program 1 times [2021-12-28 09:14:52,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:52,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047244227] [2021-12-28 09:14:52,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:52,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:52,187 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:52,191 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:52,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:52,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723571, now seen corresponding path program 1 times [2021-12-28 09:14:52,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:52,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127049550] [2021-12-28 09:14:52,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:52,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:52,199 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:52,205 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:52,261 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:52,262 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:52,262 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:52,262 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:52,262 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:14:52,262 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:52,262 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:52,262 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:52,262 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2021-12-28 09:14:52,263 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:52,263 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:52,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:52,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:52,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:52,358 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:52,359 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:14:52,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:52,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:52,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:52,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-28 09:14:52,416 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:14:52,417 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:52,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:52,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:52,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:52,460 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:52,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-28 09:14:52,462 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:14:52,462 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:52,485 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:14:52,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:52,512 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:52,512 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:52,512 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:52,512 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:52,512 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:14:52,512 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:52,512 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:52,512 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:52,512 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2021-12-28 09:14:52,512 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:52,512 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:52,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:52,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:52,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:52,562 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:52,566 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:14:52,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:52,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:52,568 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:52,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-28 09:14:52,570 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:14:52,582 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:14:52,582 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:14:52,583 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:14:52,583 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:14:52,583 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:14:52,585 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:14:52,585 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:14:52,600 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:14:52,605 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:14:52,605 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-28 09:14:52,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:52,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:52,607 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:52,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-28 09:14:52,639 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:14:52,639 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:14:52,640 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:14:52,640 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 [] [2021-12-28 09:14:52,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:52,660 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:14:52,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:52,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:14:52,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:52,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:14:52,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:52,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:52,800 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-28 09:14:52,801 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:52,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:52,856 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 52 states and 84 transitions. Complement of second has 5 states. [2021-12-28 09:14:52,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-28 09:14:52,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:52,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2021-12-28 09:14:52,863 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 5 letters. [2021-12-28 09:14:52,864 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:52,864 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 7 letters. Loop has 5 letters. [2021-12-28 09:14:52,865 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:52,865 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 10 letters. [2021-12-28 09:14:52,865 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:52,866 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 84 transitions. [2021-12-28 09:14:52,871 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-12-28 09:14:52,876 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 38 states and 59 transitions. [2021-12-28 09:14:52,877 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-12-28 09:14:52,877 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-12-28 09:14:52,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 59 transitions. [2021-12-28 09:14:52,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:14:52,878 INFO L681 BuchiCegarLoop]: Abstraction has 38 states and 59 transitions. [2021-12-28 09:14:52,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 59 transitions. [2021-12-28 09:14:52,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-12-28 09:14:52,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:52,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2021-12-28 09:14:52,900 INFO L704 BuchiCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-12-28 09:14:52,900 INFO L587 BuchiCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-12-28 09:14:52,900 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-28 09:14:52,900 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 57 transitions. [2021-12-28 09:14:52,902 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-12-28 09:14:52,902 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:14:52,902 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:14:52,902 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-28 09:14:52,902 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-12-28 09:14:52,903 INFO L791 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 [2021-12-28 09:14:52,903 INFO L793 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 [2021-12-28 09:14:52,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:52,906 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-28 09:14:52,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:52,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241104742] [2021-12-28 09:14:52,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:52,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:52,929 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:52,936 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:52,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:52,936 INFO L85 PathProgramCache]: Analyzing trace with hash 44013377, now seen corresponding path program 1 times [2021-12-28 09:14:52,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:52,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226706245] [2021-12-28 09:14:52,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:52,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:52,940 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:52,944 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:52,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:52,946 INFO L85 PathProgramCache]: Analyzing trace with hash 297857786, now seen corresponding path program 1 times [2021-12-28 09:14:52,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:52,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73566369] [2021-12-28 09:14:52,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:52,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:52,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:52,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:14:52,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73566369] [2021-12-28 09:14:52,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73566369] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:14:52,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:14:52,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:14:52,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140457433] [2021-12-28 09:14:52,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:14:53,022 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:53,022 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:53,023 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:53,023 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:53,023 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:14:53,023 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:53,023 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:53,023 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:53,023 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2021-12-28 09:14:53,023 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:53,023 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:53,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:53,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:53,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:53,068 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:53,068 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:14:53,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:53,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:53,070 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:53,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-28 09:14:53,074 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:14:53,074 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:53,096 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:14:53,096 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: [] [2021-12-28 09:14:53,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:53,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:53,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:53,139 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:53,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-28 09:14:53,141 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:14:53,141 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:53,156 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:14:53,157 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: [] [2021-12-28 09:14:53,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:53,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:53,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:53,174 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:53,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-28 09:14:53,178 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:14:53,178 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:53,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:53,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:53,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:53,220 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:53,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-28 09:14:53,223 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:14:53,223 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:53,251 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:14:53,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-28 09:14:53,270 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:53,270 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:53,270 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:53,270 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:53,270 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:14:53,270 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:53,270 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:53,270 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:53,270 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2021-12-28 09:14:53,270 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:53,270 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:53,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:53,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:53,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:53,323 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:53,323 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:14:53,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:53,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:53,324 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:53,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-28 09:14:53,338 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:14:53,344 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:14:53,344 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:14:53,344 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:14:53,344 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-28 09:14:53,344 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:14:53,345 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-28 09:14:53,345 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:14:53,358 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:14:53,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:53,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:53,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:53,378 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:53,386 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:14:53,391 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:14:53,392 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:14:53,392 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:14:53,392 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:14:53,392 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:14:53,393 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:14:53,393 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:14:53,394 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:14:53,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-28 09:14:53,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:53,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:53,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:53,410 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:53,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-28 09:14:53,421 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:14:53,427 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:14:53,427 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:14:53,427 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:14:53,427 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:14:53,427 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:14:53,429 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:14:53,429 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:14:53,439 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:14:53,442 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:14:53,442 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-28 09:14:53,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:53,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:53,448 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:53,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-28 09:14:53,450 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:14:53,450 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:14:53,451 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:14:53,451 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 [] [2021-12-28 09:14:53,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:53,489 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:14:53,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:53,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:14:53,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:53,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:14:53,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:53,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:53,580 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-28 09:14:53,581 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 57 transitions. cyclomatic complexity: 23 Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:53,628 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 57 transitions. cyclomatic complexity: 23. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 104 states and 155 transitions. Complement of second has 7 states. [2021-12-28 09:14:53,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-28 09:14:53,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:53,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2021-12-28 09:14:53,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 5 letters. [2021-12-28 09:14:53,631 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:53,631 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 8 letters. Loop has 5 letters. [2021-12-28 09:14:53,631 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:53,631 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 10 letters. [2021-12-28 09:14:53,632 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:53,633 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 155 transitions. [2021-12-28 09:14:53,637 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-12-28 09:14:53,639 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 77 states and 121 transitions. [2021-12-28 09:14:53,639 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-12-28 09:14:53,640 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-12-28 09:14:53,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 121 transitions. [2021-12-28 09:14:53,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:14:53,641 INFO L681 BuchiCegarLoop]: Abstraction has 77 states and 121 transitions. [2021-12-28 09:14:53,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 121 transitions. [2021-12-28 09:14:53,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 54. [2021-12-28 09:14:53,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 53 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:53,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 86 transitions. [2021-12-28 09:14:53,647 INFO L704 BuchiCegarLoop]: Abstraction has 54 states and 86 transitions. [2021-12-28 09:14:53,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:14:53,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:14:53,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:14:53,650 INFO L87 Difference]: Start difference. First operand 54 states and 86 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:53,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:14:53,669 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2021-12-28 09:14:53,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:14:53,670 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 128 transitions. [2021-12-28 09:14:53,671 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-12-28 09:14:53,672 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 87 states and 125 transitions. [2021-12-28 09:14:53,672 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2021-12-28 09:14:53,672 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2021-12-28 09:14:53,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 125 transitions. [2021-12-28 09:14:53,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:14:53,673 INFO L681 BuchiCegarLoop]: Abstraction has 87 states and 125 transitions. [2021-12-28 09:14:53,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 125 transitions. [2021-12-28 09:14:53,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2021-12-28 09:14:53,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 85 states have (on average 1.4470588235294117) internal successors, (123), 84 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:53,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 123 transitions. [2021-12-28 09:14:53,676 INFO L704 BuchiCegarLoop]: Abstraction has 85 states and 123 transitions. [2021-12-28 09:14:53,677 INFO L587 BuchiCegarLoop]: Abstraction has 85 states and 123 transitions. [2021-12-28 09:14:53,677 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-28 09:14:53,677 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 85 states and 123 transitions. [2021-12-28 09:14:53,678 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-12-28 09:14:53,678 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:14:53,678 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:14:53,678 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-28 09:14:53,678 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-12-28 09:14:53,678 INFO L791 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 [2021-12-28 09:14:53,679 INFO L793 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 [2021-12-28 09:14:53,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:53,679 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 2 times [2021-12-28 09:14:53,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:53,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760950121] [2021-12-28 09:14:53,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:53,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:53,684 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:53,687 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:53,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:53,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1365729718, now seen corresponding path program 1 times [2021-12-28 09:14:53,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:53,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921400349] [2021-12-28 09:14:53,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:53,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:53,691 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:53,693 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:53,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:53,694 INFO L85 PathProgramCache]: Analyzing trace with hash 644971805, now seen corresponding path program 1 times [2021-12-28 09:14:53,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:53,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099215455] [2021-12-28 09:14:53,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:53,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:53,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:53,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:14:53,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099215455] [2021-12-28 09:14:53,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099215455] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:14:53,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:14:53,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:14:53,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105187756] [2021-12-28 09:14:53,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:14:53,734 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:53,734 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:53,735 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:53,735 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:53,735 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:14:53,735 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:53,735 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:53,735 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:53,735 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2021-12-28 09:14:53,735 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:53,735 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:53,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:53,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:53,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:53,772 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:53,772 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:14:53,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:53,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:53,773 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:53,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-28 09:14:53,776 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:14:53,776 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:53,797 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:14:53,797 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: [] [2021-12-28 09:14:53,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:53,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:53,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:53,817 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:53,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-28 09:14:53,820 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:14:53,820 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:53,841 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:14:53,842 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: [] [2021-12-28 09:14:53,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:53,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:53,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:53,860 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:53,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-28 09:14:53,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:14:53,913 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:53,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:53,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:53,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:53,946 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:53,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-28 09:14:53,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:14:53,950 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:53,972 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:14:53,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-12-28 09:14:53,990 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:53,990 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:53,990 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:53,990 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:53,990 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:14:53,990 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:53,990 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:53,990 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:53,990 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2021-12-28 09:14:53,990 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:53,990 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:53,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:53,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:54,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:54,039 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:54,039 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:14:54,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:54,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:54,040 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:54,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-28 09:14:54,043 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:14:54,049 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:14:54,049 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:14:54,050 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:14:54,050 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-28 09:14:54,050 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:14:54,051 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-28 09:14:54,051 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:14:54,065 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:14:54,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:54,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:54,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:54,083 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:54,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-28 09:14:54,085 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:14:54,092 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:14:54,092 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:14:54,092 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:14:54,092 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:14:54,092 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:14:54,093 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:14:54,093 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:14:54,094 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:14:54,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:54,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:54,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:54,111 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:54,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-28 09:14:54,113 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:14:54,119 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:14:54,119 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:14:54,119 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:14:54,119 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:14:54,119 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:14:54,120 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:14:54,120 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:14:54,129 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:14:54,131 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-28 09:14:54,131 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-28 09:14:54,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:54,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:54,132 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:54,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-28 09:14:54,135 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:14:54,135 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:14:54,135 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:14:54,135 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 [] [2021-12-28 09:14:54,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2021-12-28 09:14:54,154 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:14:54,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:54,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:14:54,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:54,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:14:54,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:54,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:54,204 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-28 09:14:54,204 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 123 transitions. cyclomatic complexity: 44 Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:54,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:54,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:54,280 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 123 transitions. cyclomatic complexity: 44. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 170 states and 232 transitions. Complement of second has 9 states. [2021-12-28 09:14:54,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-12-28 09:14:54,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:54,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2021-12-28 09:14:54,281 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 6 letters. [2021-12-28 09:14:54,281 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:54,281 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 9 letters. Loop has 6 letters. [2021-12-28 09:14:54,282 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:54,282 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 12 letters. [2021-12-28 09:14:54,282 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:54,282 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 170 states and 232 transitions. [2021-12-28 09:14:54,283 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-12-28 09:14:54,300 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 170 states to 141 states and 196 transitions. [2021-12-28 09:14:54,300 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 47 [2021-12-28 09:14:54,300 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2021-12-28 09:14:54,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 196 transitions. [2021-12-28 09:14:54,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:14:54,300 INFO L681 BuchiCegarLoop]: Abstraction has 141 states and 196 transitions. [2021-12-28 09:14:54,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states and 196 transitions. [2021-12-28 09:14:54,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 105. [2021-12-28 09:14:54,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 105 states have (on average 1.4095238095238096) internal successors, (148), 104 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:54,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 148 transitions. [2021-12-28 09:14:54,305 INFO L704 BuchiCegarLoop]: Abstraction has 105 states and 148 transitions. [2021-12-28 09:14:54,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:14:54,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:14:54,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:14:54,306 INFO L87 Difference]: Start difference. First operand 105 states and 148 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:54,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:14:54,318 INFO L93 Difference]: Finished difference Result 65 states and 94 transitions. [2021-12-28 09:14:54,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:14:54,319 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 94 transitions. [2021-12-28 09:14:54,320 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2021-12-28 09:14:54,328 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 61 states and 90 transitions. [2021-12-28 09:14:54,328 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-12-28 09:14:54,328 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-12-28 09:14:54,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 90 transitions. [2021-12-28 09:14:54,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:14:54,328 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-12-28 09:14:54,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 90 transitions. [2021-12-28 09:14:54,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-12-28 09:14:54,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 60 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:54,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 90 transitions. [2021-12-28 09:14:54,331 INFO L704 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-12-28 09:14:54,331 INFO L587 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-12-28 09:14:54,331 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-28 09:14:54,331 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 61 states and 90 transitions. [2021-12-28 09:14:54,331 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2021-12-28 09:14:54,332 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:14:54,332 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:14:54,332 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-12-28 09:14:54,332 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-12-28 09:14:54,332 INFO L791 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 [2021-12-28 09:14:54,332 INFO L793 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 [2021-12-28 09:14:54,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:54,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1523382593, now seen corresponding path program 1 times [2021-12-28 09:14:54,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:54,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842610572] [2021-12-28 09:14:54,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:54,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:54,351 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:54,358 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:54,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:54,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1623382260, now seen corresponding path program 1 times [2021-12-28 09:14:54,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:54,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283594265] [2021-12-28 09:14:54,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:54,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:54,361 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:54,364 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:54,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:54,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1141286606, now seen corresponding path program 1 times [2021-12-28 09:14:54,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:54,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548212071] [2021-12-28 09:14:54,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:54,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:54,379 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:54,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:14:54,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548212071] [2021-12-28 09:14:54,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548212071] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:14:54,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:14:54,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:14:54,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994886337] [2021-12-28 09:14:54,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:14:54,398 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:54,398 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:54,399 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:54,399 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:54,399 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:14:54,399 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:54,399 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:54,399 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:54,399 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2021-12-28 09:14:54,399 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:54,399 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:54,400 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:54,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:54,424 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:54,424 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:14:54,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:54,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:54,425 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:54,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-12-28 09:14:54,428 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:14:54,428 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:54,439 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:14:54,439 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: [] [2021-12-28 09:14:54,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:54,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:54,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:54,457 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:54,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-28 09:14:54,460 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:14:54,460 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:54,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:54,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:54,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:54,497 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:54,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-28 09:14:54,499 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:14:54,499 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:54,520 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:14:54,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:54,536 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:54,536 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:54,536 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:54,536 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:54,536 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:14:54,536 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:54,536 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:54,536 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:54,536 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2021-12-28 09:14:54,536 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:54,536 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:54,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:54,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:54,563 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:54,563 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:14:54,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:54,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:54,564 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:54,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-28 09:14:54,567 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:14:54,572 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:14:54,572 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:14:54,572 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:14:54,572 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:14:54,572 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:14:54,573 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:14:54,573 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:14:54,589 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:14:54,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:54,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:54,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:54,613 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:54,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-12-28 09:14:54,615 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:14:54,620 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:14:54,620 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:14:54,620 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:14:54,620 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:14:54,621 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:14:54,622 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:14:54,622 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:14:54,637 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:14:54,639 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:14:54,639 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-28 09:14:54,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:54,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:54,640 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:54,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-12-28 09:14:54,642 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:14:54,642 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:14:54,642 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:14:54,642 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 [] [2021-12-28 09:14:54,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:54,671 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:14:54,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:54,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:14:54,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:54,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:14:54,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:54,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:54,734 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-28 09:14:54,734 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 61 states and 90 transitions. cyclomatic complexity: 33 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:54,776 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 61 states and 90 transitions. cyclomatic complexity: 33. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 183 states and 281 transitions. Complement of second has 9 states. [2021-12-28 09:14:54,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-12-28 09:14:54,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:54,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2021-12-28 09:14:54,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 6 letters. [2021-12-28 09:14:54,778 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:54,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 16 letters. Loop has 6 letters. [2021-12-28 09:14:54,778 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:54,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 12 letters. [2021-12-28 09:14:54,778 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:54,779 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 281 transitions. [2021-12-28 09:14:54,780 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2021-12-28 09:14:54,781 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 163 states and 245 transitions. [2021-12-28 09:14:54,781 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2021-12-28 09:14:54,781 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2021-12-28 09:14:54,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 163 states and 245 transitions. [2021-12-28 09:14:54,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:14:54,781 INFO L681 BuchiCegarLoop]: Abstraction has 163 states and 245 transitions. [2021-12-28 09:14:54,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states and 245 transitions. [2021-12-28 09:14:54,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 125. [2021-12-28 09:14:54,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 125 states have (on average 1.464) internal successors, (183), 124 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:54,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 183 transitions. [2021-12-28 09:14:54,785 INFO L704 BuchiCegarLoop]: Abstraction has 125 states and 183 transitions. [2021-12-28 09:14:54,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:14:54,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:14:54,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:14:54,786 INFO L87 Difference]: Start difference. First operand 125 states and 183 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:54,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:14:54,825 INFO L93 Difference]: Finished difference Result 164 states and 223 transitions. [2021-12-28 09:14:54,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:14:54,825 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 [2021-12-28 09:14:54,828 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 164 states and 223 transitions. [2021-12-28 09:14:54,830 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 36 [2021-12-28 09:14:54,831 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 164 states to 154 states and 211 transitions. [2021-12-28 09:14:54,831 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2021-12-28 09:14:54,831 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-12-28 09:14:54,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 154 states and 211 transitions. [2021-12-28 09:14:54,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:14:54,831 INFO L681 BuchiCegarLoop]: Abstraction has 154 states and 211 transitions. [2021-12-28 09:14:54,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states and 211 transitions. [2021-12-28 09:14:54,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 134. [2021-12-28 09:14:54,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 134 states have (on average 1.4253731343283582) internal successors, (191), 133 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:54,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 191 transitions. [2021-12-28 09:14:54,834 INFO L704 BuchiCegarLoop]: Abstraction has 134 states and 191 transitions. [2021-12-28 09:14:54,834 INFO L587 BuchiCegarLoop]: Abstraction has 134 states and 191 transitions. [2021-12-28 09:14:54,835 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-28 09:14:54,835 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 134 states and 191 transitions. [2021-12-28 09:14:54,835 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 35 [2021-12-28 09:14:54,835 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:14:54,835 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:14:54,836 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:14:54,836 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:14:54,836 INFO L791 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 [2021-12-28 09:14:54,836 INFO L793 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 [2021-12-28 09:14:54,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:54,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 1 times [2021-12-28 09:14:54,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:54,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693241418] [2021-12-28 09:14:54,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:54,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:54,841 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:54,848 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:54,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:54,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1982564596, now seen corresponding path program 1 times [2021-12-28 09:14:54,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:54,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059854740] [2021-12-28 09:14:54,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:54,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:54,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:54,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:14:54,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059854740] [2021-12-28 09:14:54,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059854740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:14:54,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:14:54,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:14:54,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600740056] [2021-12-28 09:14:54,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:14:54,861 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:14:54,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:14:54,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:14:54,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:14:54,861 INFO L87 Difference]: Start difference. First operand 134 states and 191 transitions. cyclomatic complexity: 65 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:54,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:14:54,876 INFO L93 Difference]: Finished difference Result 182 states and 254 transitions. [2021-12-28 09:14:54,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:14:54,877 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 254 transitions. [2021-12-28 09:14:54,878 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2021-12-28 09:14:54,879 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 182 states and 254 transitions. [2021-12-28 09:14:54,879 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 70 [2021-12-28 09:14:54,879 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 70 [2021-12-28 09:14:54,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 254 transitions. [2021-12-28 09:14:54,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:14:54,879 INFO L681 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-12-28 09:14:54,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 254 transitions. [2021-12-28 09:14:54,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-12-28 09:14:54,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 182 states have (on average 1.3956043956043955) internal successors, (254), 181 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:54,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 254 transitions. [2021-12-28 09:14:54,883 INFO L704 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-12-28 09:14:54,883 INFO L587 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-12-28 09:14:54,884 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-28 09:14:54,884 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 182 states and 254 transitions. [2021-12-28 09:14:54,884 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2021-12-28 09:14:54,885 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:14:54,885 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:14:54,885 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:14:54,885 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:14:54,885 INFO L791 eck$LassoCheckResult]: Stem: 1874#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 1875#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 1880#L111 assume !false; 1881#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2008#L36 assume 8466 == main_~s__state~0#1; 1992#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 1989#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1940#L111 [2021-12-28 09:14:54,885 INFO L793 eck$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 [2021-12-28 09:14:54,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:54,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 2 times [2021-12-28 09:14:54,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:54,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152543122] [2021-12-28 09:14:54,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:54,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:54,890 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:54,893 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:54,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:54,894 INFO L85 PathProgramCache]: Analyzing trace with hash 862619384, now seen corresponding path program 1 times [2021-12-28 09:14:54,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:54,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734150673] [2021-12-28 09:14:54,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:54,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:54,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:54,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:14:54,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734150673] [2021-12-28 09:14:54,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734150673] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:14:54,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:14:54,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:14:54,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957470732] [2021-12-28 09:14:54,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:14:54,906 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:14:54,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:14:54,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:14:54,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:14:54,907 INFO L87 Difference]: Start difference. First operand 182 states and 254 transitions. cyclomatic complexity: 80 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:54,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:14:54,921 INFO L93 Difference]: Finished difference Result 157 states and 202 transitions. [2021-12-28 09:14:54,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:14:54,922 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 157 states and 202 transitions. [2021-12-28 09:14:54,923 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-12-28 09:14:54,923 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 157 states to 111 states and 141 transitions. [2021-12-28 09:14:54,923 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 58 [2021-12-28 09:14:54,923 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2021-12-28 09:14:54,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 141 transitions. [2021-12-28 09:14:54,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:14:54,924 INFO L681 BuchiCegarLoop]: Abstraction has 111 states and 141 transitions. [2021-12-28 09:14:54,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 141 transitions. [2021-12-28 09:14:54,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2021-12-28 09:14:54,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 105 states have (on average 1.276190476190476) internal successors, (134), 104 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:54,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 134 transitions. [2021-12-28 09:14:54,926 INFO L704 BuchiCegarLoop]: Abstraction has 105 states and 134 transitions. [2021-12-28 09:14:54,926 INFO L587 BuchiCegarLoop]: Abstraction has 105 states and 134 transitions. [2021-12-28 09:14:54,926 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-28 09:14:54,926 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 105 states and 134 transitions. [2021-12-28 09:14:54,926 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-12-28 09:14:54,927 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:14:54,927 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:14:54,927 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:14:54,927 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:14:54,927 INFO L791 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 [2021-12-28 09:14:54,927 INFO L793 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 [2021-12-28 09:14:54,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:54,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 3 times [2021-12-28 09:14:54,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:54,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907193224] [2021-12-28 09:14:54,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:54,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:54,932 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:54,935 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:54,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:54,935 INFO L85 PathProgramCache]: Analyzing trace with hash 49895967, now seen corresponding path program 1 times [2021-12-28 09:14:54,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:54,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406464602] [2021-12-28 09:14:54,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:54,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:54,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:54,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:14:54,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406464602] [2021-12-28 09:14:54,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406464602] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:14:54,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:14:54,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:14:54,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437752405] [2021-12-28 09:14:54,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:14:54,949 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:14:54,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:14:54,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:14:54,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:14:54,949 INFO L87 Difference]: Start difference. First operand 105 states and 134 transitions. cyclomatic complexity: 36 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:54,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:14:54,961 INFO L93 Difference]: Finished difference Result 116 states and 146 transitions. [2021-12-28 09:14:54,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:14:54,961 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 146 transitions. [2021-12-28 09:14:54,962 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2021-12-28 09:14:54,962 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 116 states and 146 transitions. [2021-12-28 09:14:54,963 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2021-12-28 09:14:54,963 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 64 [2021-12-28 09:14:54,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 146 transitions. [2021-12-28 09:14:54,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:14:54,963 INFO L681 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-12-28 09:14:54,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states and 146 transitions. [2021-12-28 09:14:54,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-12-28 09:14:54,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 116 states have (on average 1.2586206896551724) internal successors, (146), 115 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:54,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2021-12-28 09:14:54,965 INFO L704 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-12-28 09:14:54,965 INFO L587 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-12-28 09:14:54,965 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-28 09:14:54,965 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 146 transitions. [2021-12-28 09:14:54,966 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2021-12-28 09:14:54,966 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:14:54,966 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:14:54,966 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:14:54,966 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:14:54,967 INFO L791 eck$LassoCheckResult]: Stem: 2442#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 2443#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 2460#L111 assume !false; 2541#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2540#L36 assume 8466 == main_~s__state~0#1; 2500#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 2495#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 2450#L111 [2021-12-28 09:14:54,967 INFO L793 eck$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 [2021-12-28 09:14:54,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:54,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 4 times [2021-12-28 09:14:54,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:54,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552544524] [2021-12-28 09:14:54,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:54,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:54,971 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:54,974 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:54,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:54,975 INFO L85 PathProgramCache]: Analyzing trace with hash 750960545, now seen corresponding path program 1 times [2021-12-28 09:14:54,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:54,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848945772] [2021-12-28 09:14:54,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:54,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:54,984 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:54,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:14:54,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848945772] [2021-12-28 09:14:54,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848945772] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:14:54,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:14:54,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 09:14:54,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081160696] [2021-12-28 09:14:54,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:14:54,985 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:14:54,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:14:54,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:14:54,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:14:54,986 INFO L87 Difference]: Start difference. First operand 116 states and 146 transitions. cyclomatic complexity: 38 Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:54,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:14:54,990 INFO L93 Difference]: Finished difference Result 142 states and 175 transitions. [2021-12-28 09:14:54,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:14:54,991 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142 states and 175 transitions. [2021-12-28 09:14:54,992 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-12-28 09:14:54,992 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142 states to 137 states and 167 transitions. [2021-12-28 09:14:54,993 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2021-12-28 09:14:54,993 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2021-12-28 09:14:54,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 137 states and 167 transitions. [2021-12-28 09:14:54,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:14:54,993 INFO L681 BuchiCegarLoop]: Abstraction has 137 states and 167 transitions. [2021-12-28 09:14:54,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states and 167 transitions. [2021-12-28 09:14:54,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 109. [2021-12-28 09:14:54,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 108 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:54,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 136 transitions. [2021-12-28 09:14:54,995 INFO L704 BuchiCegarLoop]: Abstraction has 109 states and 136 transitions. [2021-12-28 09:14:54,995 INFO L587 BuchiCegarLoop]: Abstraction has 109 states and 136 transitions. [2021-12-28 09:14:54,995 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-28 09:14:54,995 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 109 states and 136 transitions. [2021-12-28 09:14:54,996 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-12-28 09:14:54,996 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:14:54,996 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:14:54,996 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:14:54,996 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:14:54,996 INFO L791 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 [2021-12-28 09:14:54,996 INFO L793 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 [2021-12-28 09:14:54,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:54,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 5 times [2021-12-28 09:14:54,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:54,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780851182] [2021-12-28 09:14:54,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:54,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:55,000 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:55,003 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:55,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:55,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1947655960, now seen corresponding path program 1 times [2021-12-28 09:14:55,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:55,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850586538] [2021-12-28 09:14:55,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:55,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:55,006 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:55,008 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:55,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:55,008 INFO L85 PathProgramCache]: Analyzing trace with hash 163931656, now seen corresponding path program 1 times [2021-12-28 09:14:55,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:55,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532292195] [2021-12-28 09:14:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:55,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:55,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:55,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:14:55,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532292195] [2021-12-28 09:14:55,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532292195] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:14:55,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:14:55,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:14:55,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749279639] [2021-12-28 09:14:55,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:14:55,051 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:55,051 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:55,051 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:55,051 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:55,051 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:14:55,051 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:55,052 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:55,052 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:55,052 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2021-12-28 09:14:55,052 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:55,052 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:55,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:55,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:55,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:55,125 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:55,126 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:14:55,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:55,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:55,127 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:55,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-12-28 09:14:55,129 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:14:55,129 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:55,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:55,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:55,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:55,169 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:55,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-12-28 09:14:55,171 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:14:55,171 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:55,193 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:14:55,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-12-28 09:14:55,209 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:55,209 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:55,209 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:55,209 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:55,209 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:14:55,209 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:55,209 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:55,209 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:55,209 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2021-12-28 09:14:55,209 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:55,209 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:55,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:55,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:55,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:55,270 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:55,270 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:14:55,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:55,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:55,271 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:55,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-12-28 09:14:55,274 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:14:55,281 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:14:55,281 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:14:55,281 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:14:55,281 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:14:55,281 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:14:55,283 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:14:55,283 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:14:55,291 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:14:55,293 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-28 09:14:55,294 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-28 09:14:55,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:55,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:55,295 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:55,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-12-28 09:14:55,302 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:14:55,302 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:14:55,302 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:14:55,302 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 [] [2021-12-28 09:14:55,317 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 [2021-12-28 09:14:55,318 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:14:55,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:55,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:14:55,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:55,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:14:55,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:55,416 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-28 09:14:55,416 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 109 states and 136 transitions. cyclomatic complexity: 36 Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:55,439 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 109 states and 136 transitions. cyclomatic complexity: 36. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 148 states and 178 transitions. Complement of second has 6 states. [2021-12-28 09:14:55,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-28 09:14:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:55,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2021-12-28 09:14:55,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 10 letters. [2021-12-28 09:14:55,442 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:55,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 17 letters. Loop has 10 letters. [2021-12-28 09:14:55,442 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:55,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 20 letters. [2021-12-28 09:14:55,442 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:55,442 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 178 transitions. [2021-12-28 09:14:55,443 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-12-28 09:14:55,444 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 109 states and 132 transitions. [2021-12-28 09:14:55,444 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-12-28 09:14:55,444 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-12-28 09:14:55,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 109 states and 132 transitions. [2021-12-28 09:14:55,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:14:55,444 INFO L681 BuchiCegarLoop]: Abstraction has 109 states and 132 transitions. [2021-12-28 09:14:55,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states and 132 transitions. [2021-12-28 09:14:55,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-12-28 09:14:55,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 108 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:55,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2021-12-28 09:14:55,446 INFO L704 BuchiCegarLoop]: Abstraction has 109 states and 132 transitions. [2021-12-28 09:14:55,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:14:55,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:14:55,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:14:55,447 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:55,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:14:55,460 INFO L93 Difference]: Finished difference Result 92 states and 106 transitions. [2021-12-28 09:14:55,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:14:55,461 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92 states and 106 transitions. [2021-12-28 09:14:55,461 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2021-12-28 09:14:55,462 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92 states to 62 states and 71 transitions. [2021-12-28 09:14:55,462 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2021-12-28 09:14:55,462 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2021-12-28 09:14:55,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 71 transitions. [2021-12-28 09:14:55,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:14:55,462 INFO L681 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-12-28 09:14:55,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 71 transitions. [2021-12-28 09:14:55,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-12-28 09:14:55,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 61 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:55,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2021-12-28 09:14:55,478 INFO L704 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-12-28 09:14:55,478 INFO L587 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-12-28 09:14:55,478 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-28 09:14:55,478 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 62 states and 71 transitions. [2021-12-28 09:14:55,479 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2021-12-28 09:14:55,479 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:14:55,479 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:14:55,479 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:14:55,479 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:14:55,480 INFO L791 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 [2021-12-28 09:14:55,480 INFO L793 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 [2021-12-28 09:14:55,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:55,480 INFO L85 PathProgramCache]: Analyzing trace with hash 21626939, now seen corresponding path program 1 times [2021-12-28 09:14:55,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:55,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680208550] [2021-12-28 09:14:55,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:55,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:55,484 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:55,486 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:55,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:55,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1294878776, now seen corresponding path program 1 times [2021-12-28 09:14:55,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:55,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284678881] [2021-12-28 09:14:55,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:55,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:55,489 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:55,490 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:55,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:55,491 INFO L85 PathProgramCache]: Analyzing trace with hash 937672638, now seen corresponding path program 1 times [2021-12-28 09:14:55,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:55,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382726770] [2021-12-28 09:14:55,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:55,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:55,511 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:55,532 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:55,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.12 09:14:55 BoogieIcfgContainer [2021-12-28 09:14:55,673 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-28 09:14:55,674 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 09:14:55,674 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 09:14:55,674 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 09:14:55,674 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:14:51" (3/4) ... [2021-12-28 09:14:55,675 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-28 09:14:55,711 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 09:14:55,711 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 09:14:55,712 INFO L158 Benchmark]: Toolchain (without parser) took 4347.09ms. Allocated memory was 54.5MB in the beginning and 94.4MB in the end (delta: 39.8MB). Free memory was 31.8MB in the beginning and 34.8MB in the end (delta: -2.9MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. [2021-12-28 09:14:55,712 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 54.5MB. Free memory was 36.7MB in the beginning and 36.7MB in the end (delta: 47.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:14:55,712 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.07ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 31.6MB in the beginning and 60.5MB in the end (delta: -28.9MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-12-28 09:14:55,713 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.46ms. Allocated memory is still 77.6MB. Free memory was 60.5MB in the beginning and 58.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 09:14:55,713 INFO L158 Benchmark]: Boogie Preprocessor took 31.06ms. Allocated memory is still 77.6MB. Free memory was 58.9MB in the beginning and 57.9MB in the end (delta: 997.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:14:55,713 INFO L158 Benchmark]: RCFGBuilder took 259.72ms. Allocated memory is still 77.6MB. Free memory was 57.9MB in the beginning and 48.1MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-28 09:14:55,714 INFO L158 Benchmark]: BuchiAutomizer took 3729.65ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 48.1MB in the beginning and 36.8MB in the end (delta: 11.4MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. [2021-12-28 09:14:55,715 INFO L158 Benchmark]: Witness Printer took 37.37ms. Allocated memory is still 94.4MB. Free memory was 36.8MB in the beginning and 34.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 09:14:55,716 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 54.5MB. Free memory was 36.7MB in the beginning and 36.7MB in the end (delta: 47.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.07ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 31.6MB in the beginning and 60.5MB in the end (delta: -28.9MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.46ms. Allocated memory is still 77.6MB. Free memory was 60.5MB in the beginning and 58.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.06ms. Allocated memory is still 77.6MB. Free memory was 58.9MB in the beginning and 57.9MB in the end (delta: 997.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 259.72ms. Allocated memory is still 77.6MB. Free memory was 57.9MB in the beginning and 48.1MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 3729.65ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 48.1MB in the beginning and 36.8MB in the end (delta: 11.4MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. * Witness Printer took 37.37ms. Allocated memory is still 94.4MB. Free memory was 36.8MB in the beginning and 34.8MB in the end (delta: 2.0MB). 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 3.6s and 10 iterations. TraceHistogramMax:2. Analysis of lassos took 2.5s. Construction of modules took 0.1s. 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 182 states and ocurred in iteration 5. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 253 SdHoareTripleChecker+Valid, 0.2s 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: 34ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 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@53fc4728=4, NULL=0, NULL=0, s__hit=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@75fe7cab=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! [2021-12-28 09:14:55,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:55,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)