./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/locks/test_locks_13.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b 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/locks/test_locks_13.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 8fd6142dd23f608c3bc9ae24389b4aee583128e9e6b549483298584de0c08ecd --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 23:12:09,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 23:12:09,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 23:12:09,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 23:12:09,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 23:12:09,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 23:12:09,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 23:12:09,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 23:12:09,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 23:12:09,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 23:12:09,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 23:12:09,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 23:12:09,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 23:12:09,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 23:12:09,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 23:12:09,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 23:12:09,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 23:12:09,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 23:12:09,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 23:12:09,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 23:12:09,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 23:12:09,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 23:12:09,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 23:12:09,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 23:12:09,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 23:12:09,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 23:12:09,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 23:12:09,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 23:12:09,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 23:12:09,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 23:12:09,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 23:12:09,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 23:12:09,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 23:12:09,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 23:12:09,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 23:12:09,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 23:12:09,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 23:12:09,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 23:12:09,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 23:12:09,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 23:12:09,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 23:12:09,772 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-14 23:12:09,802 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 23:12:09,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 23:12:09,803 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 23:12:09,803 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 23:12:09,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 23:12:09,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 23:12:09,805 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 23:12:09,805 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 23:12:09,805 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 23:12:09,805 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 23:12:09,805 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 23:12:09,806 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 23:12:09,806 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 23:12:09,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 23:12:09,806 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 23:12:09,806 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 23:12:09,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 23:12:09,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 23:12:09,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 23:12:09,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 23:12:09,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 23:12:09,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 23:12:09,808 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 23:12:09,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 23:12:09,808 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 23:12:09,808 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 23:12:09,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 23:12:09,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 23:12:09,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 23:12:09,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 23:12:09,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 23:12:09,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 23:12:09,810 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 23:12:09,811 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fd6142dd23f608c3bc9ae24389b4aee583128e9e6b549483298584de0c08ecd [2021-12-14 23:12:10,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 23:12:10,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 23:12:10,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 23:12:10,106 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 23:12:10,106 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 23:12:10,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_13.c [2021-12-14 23:12:10,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fe0c5f87/9d605d6ba1c946f0b5c79c7e12b421f5/FLAGea02b11ba [2021-12-14 23:12:10,531 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 23:12:10,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_13.c [2021-12-14 23:12:10,551 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fe0c5f87/9d605d6ba1c946f0b5c79c7e12b421f5/FLAGea02b11ba [2021-12-14 23:12:10,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fe0c5f87/9d605d6ba1c946f0b5c79c7e12b421f5 [2021-12-14 23:12:10,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 23:12:10,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 23:12:10,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 23:12:10,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 23:12:10,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 23:12:10,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:12:10" (1/1) ... [2021-12-14 23:12:10,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@714bce31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:10, skipping insertion in model container [2021-12-14 23:12:10,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:12:10" (1/1) ... [2021-12-14 23:12:10,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 23:12:10,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 23:12:11,150 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/locks/test_locks_13.c[4936,4949] [2021-12-14 23:12:11,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:12:11,158 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 23:12:11,179 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/locks/test_locks_13.c[4936,4949] [2021-12-14 23:12:11,180 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:12:11,200 INFO L208 MainTranslator]: Completed translation [2021-12-14 23:12:11,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:11 WrapperNode [2021-12-14 23:12:11,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 23:12:11,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 23:12:11,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 23:12:11,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 23:12:11,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:11" (1/1) ... [2021-12-14 23:12:11,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:11" (1/1) ... [2021-12-14 23:12:11,244 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 157 [2021-12-14 23:12:11,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 23:12:11,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 23:12:11,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 23:12:11,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 23:12:11,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:11" (1/1) ... [2021-12-14 23:12:11,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:11" (1/1) ... [2021-12-14 23:12:11,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:11" (1/1) ... [2021-12-14 23:12:11,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:11" (1/1) ... [2021-12-14 23:12:11,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:11" (1/1) ... [2021-12-14 23:12:11,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:11" (1/1) ... [2021-12-14 23:12:11,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:11" (1/1) ... [2021-12-14 23:12:11,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 23:12:11,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 23:12:11,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 23:12:11,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 23:12:11,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:11" (1/1) ... [2021-12-14 23:12:11,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:12:11,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:12:11,316 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) [2021-12-14 23:12:11,331 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 [2021-12-14 23:12:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 23:12:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 23:12:11,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 23:12:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 23:12:11,433 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 23:12:11,434 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 23:12:11,627 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 23:12:11,633 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 23:12:11,633 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 23:12:11,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:12:11 BoogieIcfgContainer [2021-12-14 23:12:11,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 23:12:11,635 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 23:12:11,635 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 23:12:11,638 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 23:12:11,638 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:12:11,638 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 11:12:10" (1/3) ... [2021-12-14 23:12:11,639 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d9b5cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:12:11, skipping insertion in model container [2021-12-14 23:12:11,640 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:12:11,640 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:11" (2/3) ... [2021-12-14 23:12:11,640 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d9b5cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:12:11, skipping insertion in model container [2021-12-14 23:12:11,640 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:12:11,640 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:12:11" (3/3) ... [2021-12-14 23:12:11,641 INFO L388 chiAutomizerObserver]: Analyzing ICFG test_locks_13.c [2021-12-14 23:12:11,674 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 23:12:11,675 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 23:12:11,675 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 23:12:11,675 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 23:12:11,675 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 23:12:11,675 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 23:12:11,676 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 23:12:11,676 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 23:12:11,694 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 48 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 47 states have internal predecessors, (89), 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) [2021-12-14 23:12:11,720 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 41 [2021-12-14 23:12:11,721 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:12:11,721 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:12:11,727 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:12:11,727 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:12:11,727 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 23:12:11,728 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 48 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 47 states have internal predecessors, (89), 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) [2021-12-14 23:12:11,731 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 41 [2021-12-14 23:12:11,731 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:12:11,731 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:12:11,735 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:12:11,735 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:12:11,742 INFO L791 eck$LassoCheckResult]: Stem: 23#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(16, 2);call #Ultimate.allocInit(12, 3); 7#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_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_~cond~0#1; 14#L197-1true [2021-12-14 23:12:11,744 INFO L793 eck$LassoCheckResult]: Loop: 14#L197-1true assume !false;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 44#L52true assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0; 29#L83true assume 0 != main_~p1~0#1;main_~lk1~0#1 := 1; 16#L83-2true assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 10#L87-1true assume !(0 != main_~p3~0#1); 4#L91-1true assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 46#L95-1true assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 17#L99-1true assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 11#L103-1true assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 26#L107-1true assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 15#L111-1true assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 33#L115-1true assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 35#L119-1true assume !(0 != main_~p11~0#1); 47#L123-1true assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 27#L127-1true assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 36#L131-1true assume !(0 != main_~p1~0#1); 13#L137-1true assume !(0 != main_~p2~0#1); 8#L142-1true assume !(0 != main_~p3~0#1); 37#L147-1true assume !(0 != main_~p4~0#1); 12#L152-1true assume !(0 != main_~p5~0#1); 21#L157-1true assume !(0 != main_~p6~0#1); 18#L162-1true assume !(0 != main_~p7~0#1); 19#L167-1true assume !(0 != main_~p8~0#1); 24#L172-1true assume !(0 != main_~p9~0#1); 32#L177-1true assume !(0 != main_~p10~0#1); 48#L182-1true assume !(0 != main_~p11~0#1); 45#L187-1true assume !(0 != main_~p12~0#1); 39#L192-1true assume !(0 != main_~p13~0#1); 14#L197-1true [2021-12-14 23:12:11,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:11,754 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-14 23:12:11,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:11,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472319543] [2021-12-14 23:12:11,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:11,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:11,828 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:12:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:11,849 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:12:11,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:11,852 INFO L85 PathProgramCache]: Analyzing trace with hash 203947253, now seen corresponding path program 1 times [2021-12-14 23:12:11,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:11,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806377556] [2021-12-14 23:12:11,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:11,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:12:11,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:12:11,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:12:11,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806377556] [2021-12-14 23:12:11,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806377556] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:12:11,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:12:11,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:12:11,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682658559] [2021-12-14 23:12:11,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:12:11,986 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:12:11,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:12:12,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:12:12,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:12:12,018 INFO L87 Difference]: Start difference. First operand has 48 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 47 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-12-14 23:12:12,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:12:12,052 INFO L93 Difference]: Finished difference Result 93 states and 166 transitions. [2021-12-14 23:12:12,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:12:12,057 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 93 states and 166 transitions. [2021-12-14 23:12:12,061 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2021-12-14 23:12:12,064 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 93 states to 83 states and 133 transitions. [2021-12-14 23:12:12,065 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 83 [2021-12-14 23:12:12,066 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 83 [2021-12-14 23:12:12,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 133 transitions. [2021-12-14 23:12:12,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:12:12,067 INFO L681 BuchiCegarLoop]: Abstraction has 83 states and 133 transitions. [2021-12-14 23:12:12,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states and 133 transitions. [2021-12-14 23:12:12,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-12-14 23:12:12,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 83 states have (on average 1.6024096385542168) internal successors, (133), 82 states have internal predecessors, (133), 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) [2021-12-14 23:12:12,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 133 transitions. [2021-12-14 23:12:12,094 INFO L704 BuchiCegarLoop]: Abstraction has 83 states and 133 transitions. [2021-12-14 23:12:12,095 INFO L587 BuchiCegarLoop]: Abstraction has 83 states and 133 transitions. [2021-12-14 23:12:12,095 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-14 23:12:12,095 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 83 states and 133 transitions. [2021-12-14 23:12:12,099 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2021-12-14 23:12:12,099 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:12:12,099 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:12:12,099 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:12:12,100 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:12:12,100 INFO L791 eck$LassoCheckResult]: Stem: 181#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(16, 2);call #Ultimate.allocInit(12, 3); 156#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_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_~cond~0#1; 157#L197-1 [2021-12-14 23:12:12,100 INFO L793 eck$LassoCheckResult]: Loop: 157#L197-1 assume !false;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 209#L52 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0; 208#L83 assume !(0 != main_~p1~0#1); 207#L83-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 206#L87-1 assume !(0 != main_~p3~0#1); 205#L91-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 198#L95-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 174#L99-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 164#L103-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 165#L107-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 202#L111-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 192#L115-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 193#L119-1 assume !(0 != main_~p11~0#1); 201#L123-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 185#L127-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 186#L131-1 assume !(0 != main_~p1~0#1); 200#L137-1 assume !(0 != main_~p2~0#1); 231#L142-1 assume !(0 != main_~p3~0#1); 229#L147-1 assume !(0 != main_~p4~0#1); 227#L152-1 assume !(0 != main_~p5~0#1); 225#L157-1 assume !(0 != main_~p6~0#1); 223#L162-1 assume !(0 != main_~p7~0#1); 221#L167-1 assume !(0 != main_~p8~0#1); 218#L172-1 assume !(0 != main_~p9~0#1); 217#L177-1 assume !(0 != main_~p10~0#1); 215#L182-1 assume !(0 != main_~p11~0#1); 212#L187-1 assume !(0 != main_~p12~0#1); 211#L192-1 assume !(0 != main_~p13~0#1); 157#L197-1 [2021-12-14 23:12:12,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:12,101 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-12-14 23:12:12,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:12,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974017110] [2021-12-14 23:12:12,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:12,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:12,107 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:12:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:12,113 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:12:12,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:12,114 INFO L85 PathProgramCache]: Analyzing trace with hash 265986867, now seen corresponding path program 1 times [2021-12-14 23:12:12,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:12,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489033975] [2021-12-14 23:12:12,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:12,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:12:12,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:12:12,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:12:12,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489033975] [2021-12-14 23:12:12,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489033975] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:12:12,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:12:12,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:12:12,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826748896] [2021-12-14 23:12:12,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:12:12,148 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:12:12,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:12:12,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:12:12,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:12:12,150 INFO L87 Difference]: Start difference. First operand 83 states and 133 transitions. cyclomatic complexity: 52 Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-12-14 23:12:12,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:12:12,172 INFO L93 Difference]: Finished difference Result 162 states and 258 transitions. [2021-12-14 23:12:12,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:12:12,173 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 162 states and 258 transitions. [2021-12-14 23:12:12,179 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 160 [2021-12-14 23:12:12,185 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 162 states to 162 states and 258 transitions. [2021-12-14 23:12:12,185 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 162 [2021-12-14 23:12:12,186 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 162 [2021-12-14 23:12:12,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 162 states and 258 transitions. [2021-12-14 23:12:12,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:12:12,189 INFO L681 BuchiCegarLoop]: Abstraction has 162 states and 258 transitions. [2021-12-14 23:12:12,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states and 258 transitions. [2021-12-14 23:12:12,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-12-14 23:12:12,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 162 states have (on average 1.5925925925925926) internal successors, (258), 161 states have internal predecessors, (258), 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) [2021-12-14 23:12:12,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 258 transitions. [2021-12-14 23:12:12,201 INFO L704 BuchiCegarLoop]: Abstraction has 162 states and 258 transitions. [2021-12-14 23:12:12,201 INFO L587 BuchiCegarLoop]: Abstraction has 162 states and 258 transitions. [2021-12-14 23:12:12,201 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-14 23:12:12,201 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 162 states and 258 transitions. [2021-12-14 23:12:12,203 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 160 [2021-12-14 23:12:12,203 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:12:12,203 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:12:12,204 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:12:12,204 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:12:12,204 INFO L791 eck$LassoCheckResult]: Stem: 434#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(16, 2);call #Ultimate.allocInit(12, 3); 407#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_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_~cond~0#1; 406#L197-1 [2021-12-14 23:12:12,205 INFO L793 eck$LassoCheckResult]: Loop: 406#L197-1 assume !false;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 422#L52 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0; 454#L83 assume !(0 != main_~p1~0#1); 515#L83-2 assume !(0 != main_~p2~0#1); 413#L87-1 assume !(0 != main_~p3~0#1); 401#L91-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 402#L95-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 425#L99-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 414#L103-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 415#L107-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 467#L111-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 468#L115-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 463#L119-1 assume !(0 != main_~p11~0#1); 464#L123-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 437#L127-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 438#L131-1 assume !(0 != main_~p1~0#1); 509#L137-1 assume !(0 != main_~p2~0#1); 553#L142-1 assume !(0 != main_~p3~0#1); 551#L147-1 assume !(0 != main_~p4~0#1); 549#L152-1 assume !(0 != main_~p5~0#1); 547#L157-1 assume !(0 != main_~p6~0#1); 545#L162-1 assume !(0 != main_~p7~0#1); 543#L167-1 assume !(0 != main_~p8~0#1); 540#L172-1 assume !(0 != main_~p9~0#1); 539#L177-1 assume !(0 != main_~p10~0#1); 537#L182-1 assume !(0 != main_~p11~0#1); 523#L187-1 assume !(0 != main_~p12~0#1); 451#L192-1 assume !(0 != main_~p13~0#1); 406#L197-1 [2021-12-14 23:12:12,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:12,205 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-12-14 23:12:12,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:12,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357395646] [2021-12-14 23:12:12,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:12,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:12,212 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:12:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:12,218 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:12:12,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:12,219 INFO L85 PathProgramCache]: Analyzing trace with hash 406535477, now seen corresponding path program 1 times [2021-12-14 23:12:12,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:12,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820496256] [2021-12-14 23:12:12,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:12,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:12:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:12:12,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:12:12,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820496256] [2021-12-14 23:12:12,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820496256] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:12:12,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:12:12,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:12:12,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803520992] [2021-12-14 23:12:12,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:12:12,250 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:12:12,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:12:12,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:12:12,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:12:12,251 INFO L87 Difference]: Start difference. First operand 162 states and 258 transitions. cyclomatic complexity: 100 Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-12-14 23:12:12,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:12:12,267 INFO L93 Difference]: Finished difference Result 318 states and 502 transitions. [2021-12-14 23:12:12,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:12:12,268 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 318 states and 502 transitions. [2021-12-14 23:12:12,271 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 316 [2021-12-14 23:12:12,274 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 318 states to 318 states and 502 transitions. [2021-12-14 23:12:12,274 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 318 [2021-12-14 23:12:12,274 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 318 [2021-12-14 23:12:12,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 318 states and 502 transitions. [2021-12-14 23:12:12,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:12:12,276 INFO L681 BuchiCegarLoop]: Abstraction has 318 states and 502 transitions. [2021-12-14 23:12:12,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states and 502 transitions. [2021-12-14 23:12:12,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2021-12-14 23:12:12,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 318 states have (on average 1.578616352201258) internal successors, (502), 317 states have internal predecessors, (502), 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) [2021-12-14 23:12:12,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 502 transitions. [2021-12-14 23:12:12,295 INFO L704 BuchiCegarLoop]: Abstraction has 318 states and 502 transitions. [2021-12-14 23:12:12,296 INFO L587 BuchiCegarLoop]: Abstraction has 318 states and 502 transitions. [2021-12-14 23:12:12,296 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-14 23:12:12,296 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 318 states and 502 transitions. [2021-12-14 23:12:12,298 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 316 [2021-12-14 23:12:12,298 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:12:12,298 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:12:12,298 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:12:12,298 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:12:12,299 INFO L791 eck$LassoCheckResult]: Stem: 920#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(16, 2);call #Ultimate.allocInit(12, 3); 893#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_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_~cond~0#1; 894#L197-1 [2021-12-14 23:12:12,299 INFO L793 eck$LassoCheckResult]: Loop: 894#L197-1 assume !false;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 1033#L52 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0; 1031#L83 assume !(0 != main_~p1~0#1); 1029#L83-2 assume !(0 != main_~p2~0#1); 1030#L87-1 assume !(0 != main_~p3~0#1); 1101#L91-1 assume !(0 != main_~p4~0#1); 1100#L95-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 1097#L99-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 1094#L103-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 1091#L107-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 1088#L111-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 1086#L115-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 1083#L119-1 assume !(0 != main_~p11~0#1); 1081#L123-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 1077#L127-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 1073#L131-1 assume !(0 != main_~p1~0#1); 1068#L137-1 assume !(0 != main_~p2~0#1); 1021#L142-1 assume !(0 != main_~p3~0#1); 1020#L147-1 assume !(0 != main_~p4~0#1); 1060#L152-1 assume !(0 != main_~p5~0#1); 1056#L157-1 assume !(0 != main_~p6~0#1); 1052#L162-1 assume !(0 != main_~p7~0#1); 1048#L167-1 assume !(0 != main_~p8~0#1); 1044#L172-1 assume !(0 != main_~p9~0#1); 1042#L177-1 assume !(0 != main_~p10~0#1); 1039#L182-1 assume !(0 != main_~p11~0#1); 1036#L187-1 assume !(0 != main_~p12~0#1); 1035#L192-1 assume !(0 != main_~p13~0#1); 894#L197-1 [2021-12-14 23:12:12,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:12,300 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-12-14 23:12:12,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:12,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277999099] [2021-12-14 23:12:12,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:12,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:12,305 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:12:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:12,310 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:12:12,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:12,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1398902857, now seen corresponding path program 1 times [2021-12-14 23:12:12,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:12,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842453306] [2021-12-14 23:12:12,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:12,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:12:12,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:12:12,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:12:12,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842453306] [2021-12-14 23:12:12,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842453306] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:12:12,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:12:12,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:12:12,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240806635] [2021-12-14 23:12:12,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:12:12,352 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:12:12,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:12:12,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:12:12,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:12:12,353 INFO L87 Difference]: Start difference. First operand 318 states and 502 transitions. cyclomatic complexity: 192 Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-12-14 23:12:12,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:12:12,376 INFO L93 Difference]: Finished difference Result 626 states and 978 transitions. [2021-12-14 23:12:12,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:12:12,377 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 626 states and 978 transitions. [2021-12-14 23:12:12,383 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 624 [2021-12-14 23:12:12,387 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 626 states to 626 states and 978 transitions. [2021-12-14 23:12:12,387 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 626 [2021-12-14 23:12:12,388 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 626 [2021-12-14 23:12:12,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 626 states and 978 transitions. [2021-12-14 23:12:12,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:12:12,390 INFO L681 BuchiCegarLoop]: Abstraction has 626 states and 978 transitions. [2021-12-14 23:12:12,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states and 978 transitions. [2021-12-14 23:12:12,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2021-12-14 23:12:12,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 626 states have (on average 1.5623003194888179) internal successors, (978), 625 states have internal predecessors, (978), 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) [2021-12-14 23:12:12,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 978 transitions. [2021-12-14 23:12:12,417 INFO L704 BuchiCegarLoop]: Abstraction has 626 states and 978 transitions. [2021-12-14 23:12:12,417 INFO L587 BuchiCegarLoop]: Abstraction has 626 states and 978 transitions. [2021-12-14 23:12:12,417 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-14 23:12:12,417 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 626 states and 978 transitions. [2021-12-14 23:12:12,421 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 624 [2021-12-14 23:12:12,421 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:12:12,421 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:12:12,421 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:12:12,422 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:12:12,422 INFO L791 eck$LassoCheckResult]: Stem: 1873#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(16, 2);call #Ultimate.allocInit(12, 3); 1843#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_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_~cond~0#1; 1844#L197-1 [2021-12-14 23:12:12,422 INFO L793 eck$LassoCheckResult]: Loop: 1844#L197-1 assume !false;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 1950#L52 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0; 1948#L83 assume !(0 != main_~p1~0#1); 1944#L83-2 assume !(0 != main_~p2~0#1); 1942#L87-1 assume !(0 != main_~p3~0#1); 1938#L91-1 assume !(0 != main_~p4~0#1); 1935#L95-1 assume !(0 != main_~p5~0#1); 1933#L99-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 1931#L103-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 1929#L107-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 1927#L111-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 1925#L115-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 1923#L119-1 assume !(0 != main_~p11~0#1); 1921#L123-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 1919#L127-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 1916#L131-1 assume !(0 != main_~p1~0#1); 1917#L137-1 assume !(0 != main_~p2~0#1); 1994#L142-1 assume !(0 != main_~p3~0#1); 1989#L147-1 assume !(0 != main_~p4~0#1); 1985#L152-1 assume !(0 != main_~p5~0#1); 1982#L157-1 assume !(0 != main_~p6~0#1); 1978#L162-1 assume !(0 != main_~p7~0#1); 1974#L167-1 assume !(0 != main_~p8~0#1); 1969#L172-1 assume !(0 != main_~p9~0#1); 1966#L177-1 assume !(0 != main_~p10~0#1); 1962#L182-1 assume !(0 != main_~p11~0#1); 1957#L187-1 assume !(0 != main_~p12~0#1); 1954#L192-1 assume !(0 != main_~p13~0#1); 1844#L197-1 [2021-12-14 23:12:12,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:12,423 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-12-14 23:12:12,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:12,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266810918] [2021-12-14 23:12:12,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:12,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:12,428 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:12:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:12,445 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:12:12,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:12,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1180048139, now seen corresponding path program 1 times [2021-12-14 23:12:12,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:12,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063951872] [2021-12-14 23:12:12,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:12,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:12:12,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:12:12,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:12:12,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063951872] [2021-12-14 23:12:12,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063951872] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:12:12,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:12:12,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:12:12,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340193453] [2021-12-14 23:12:12,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:12:12,499 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:12:12,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:12:12,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:12:12,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:12:12,501 INFO L87 Difference]: Start difference. First operand 626 states and 978 transitions. cyclomatic complexity: 368 Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-12-14 23:12:12,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:12:12,533 INFO L93 Difference]: Finished difference Result 1234 states and 1906 transitions. [2021-12-14 23:12:12,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:12:12,536 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1234 states and 1906 transitions. [2021-12-14 23:12:12,547 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1232 [2021-12-14 23:12:12,554 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1234 states to 1234 states and 1906 transitions. [2021-12-14 23:12:12,555 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1234 [2021-12-14 23:12:12,556 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1234 [2021-12-14 23:12:12,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1234 states and 1906 transitions. [2021-12-14 23:12:12,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:12:12,560 INFO L681 BuchiCegarLoop]: Abstraction has 1234 states and 1906 transitions. [2021-12-14 23:12:12,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states and 1906 transitions. [2021-12-14 23:12:12,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1234. [2021-12-14 23:12:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1234 states have (on average 1.5445705024311183) internal successors, (1906), 1233 states have internal predecessors, (1906), 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) [2021-12-14 23:12:12,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1906 transitions. [2021-12-14 23:12:12,596 INFO L704 BuchiCegarLoop]: Abstraction has 1234 states and 1906 transitions. [2021-12-14 23:12:12,596 INFO L587 BuchiCegarLoop]: Abstraction has 1234 states and 1906 transitions. [2021-12-14 23:12:12,596 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-14 23:12:12,596 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1234 states and 1906 transitions. [2021-12-14 23:12:12,602 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1232 [2021-12-14 23:12:12,602 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:12:12,602 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:12:12,605 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:12:12,605 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:12:12,605 INFO L791 eck$LassoCheckResult]: Stem: 3735#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(16, 2);call #Ultimate.allocInit(12, 3); 3709#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_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_~cond~0#1; 3710#L197-1 [2021-12-14 23:12:12,606 INFO L793 eck$LassoCheckResult]: Loop: 3710#L197-1 assume !false;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 3841#L52 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0; 3837#L83 assume !(0 != main_~p1~0#1); 3830#L83-2 assume !(0 != main_~p2~0#1); 3825#L87-1 assume !(0 != main_~p3~0#1); 3818#L91-1 assume !(0 != main_~p4~0#1); 3810#L95-1 assume !(0 != main_~p5~0#1); 3804#L99-1 assume !(0 != main_~p6~0#1); 3799#L103-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 3796#L107-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 3793#L111-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 3790#L115-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 3787#L119-1 assume !(0 != main_~p11~0#1); 3784#L123-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 3780#L127-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 3781#L131-1 assume !(0 != main_~p1~0#1); 3908#L137-1 assume !(0 != main_~p2~0#1); 3904#L142-1 assume !(0 != main_~p3~0#1); 3894#L147-1 assume !(0 != main_~p4~0#1); 3889#L152-1 assume !(0 != main_~p5~0#1); 3887#L157-1 assume !(0 != main_~p6~0#1); 3886#L162-1 assume !(0 != main_~p7~0#1); 3884#L167-1 assume !(0 != main_~p8~0#1); 3877#L172-1 assume !(0 != main_~p9~0#1); 3866#L177-1 assume !(0 != main_~p10~0#1); 3858#L182-1 assume !(0 != main_~p11~0#1); 3853#L187-1 assume !(0 != main_~p12~0#1); 3850#L192-1 assume !(0 != main_~p13~0#1); 3710#L197-1 [2021-12-14 23:12:12,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:12,607 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2021-12-14 23:12:12,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:12,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159272063] [2021-12-14 23:12:12,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:12,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:12,621 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:12:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:12,629 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:12:12,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:12,630 INFO L85 PathProgramCache]: Analyzing trace with hash -757346313, now seen corresponding path program 1 times [2021-12-14 23:12:12,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:12,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863477189] [2021-12-14 23:12:12,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:12,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:12:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:12:12,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:12:12,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863477189] [2021-12-14 23:12:12,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863477189] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:12:12,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:12:12,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:12:12,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652427309] [2021-12-14 23:12:12,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:12:12,676 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:12:12,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:12:12,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:12:12,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:12:12,681 INFO L87 Difference]: Start difference. First operand 1234 states and 1906 transitions. cyclomatic complexity: 704 Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-12-14 23:12:12,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:12:12,705 INFO L93 Difference]: Finished difference Result 2434 states and 3714 transitions. [2021-12-14 23:12:12,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:12:12,707 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2434 states and 3714 transitions. [2021-12-14 23:12:12,731 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2432 [2021-12-14 23:12:12,745 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2434 states to 2434 states and 3714 transitions. [2021-12-14 23:12:12,745 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2434 [2021-12-14 23:12:12,747 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2434 [2021-12-14 23:12:12,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2434 states and 3714 transitions. [2021-12-14 23:12:12,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:12:12,750 INFO L681 BuchiCegarLoop]: Abstraction has 2434 states and 3714 transitions. [2021-12-14 23:12:12,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states and 3714 transitions. [2021-12-14 23:12:12,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 2434. [2021-12-14 23:12:12,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2434 states, 2434 states have (on average 1.5258833196384551) internal successors, (3714), 2433 states have internal predecessors, (3714), 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) [2021-12-14 23:12:12,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2434 states to 2434 states and 3714 transitions. [2021-12-14 23:12:12,795 INFO L704 BuchiCegarLoop]: Abstraction has 2434 states and 3714 transitions. [2021-12-14 23:12:12,796 INFO L587 BuchiCegarLoop]: Abstraction has 2434 states and 3714 transitions. [2021-12-14 23:12:12,798 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-14 23:12:12,798 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2434 states and 3714 transitions. [2021-12-14 23:12:12,812 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2432 [2021-12-14 23:12:12,813 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:12:12,813 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:12:12,815 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:12:12,815 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:12:12,815 INFO L791 eck$LassoCheckResult]: Stem: 7410#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(16, 2);call #Ultimate.allocInit(12, 3); 7383#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_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_~cond~0#1; 7384#L197-1 [2021-12-14 23:12:12,816 INFO L793 eck$LassoCheckResult]: Loop: 7384#L197-1 assume !false;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 7625#L52 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0; 7624#L83 assume !(0 != main_~p1~0#1); 7593#L83-2 assume !(0 != main_~p2~0#1); 7590#L87-1 assume !(0 != main_~p3~0#1); 7582#L91-1 assume !(0 != main_~p4~0#1); 7531#L95-1 assume !(0 != main_~p5~0#1); 7490#L99-1 assume !(0 != main_~p6~0#1); 7491#L103-1 assume !(0 != main_~p7~0#1); 7731#L107-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 7726#L111-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 7724#L115-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 7722#L119-1 assume !(0 != main_~p11~0#1); 7718#L123-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 7712#L127-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 7705#L131-1 assume !(0 != main_~p1~0#1); 7654#L137-1 assume !(0 != main_~p2~0#1); 7651#L142-1 assume !(0 != main_~p3~0#1); 7648#L147-1 assume !(0 != main_~p4~0#1); 7646#L152-1 assume !(0 != main_~p5~0#1); 7644#L157-1 assume !(0 != main_~p6~0#1); 7642#L162-1 assume !(0 != main_~p7~0#1); 7641#L167-1 assume !(0 != main_~p8~0#1); 7638#L172-1 assume !(0 != main_~p9~0#1); 7637#L177-1 assume !(0 != main_~p10~0#1); 7635#L182-1 assume !(0 != main_~p11~0#1); 7632#L187-1 assume !(0 != main_~p12~0#1); 7631#L192-1 assume !(0 != main_~p13~0#1); 7384#L197-1 [2021-12-14 23:12:12,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:12,822 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2021-12-14 23:12:12,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:12,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698589488] [2021-12-14 23:12:12,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:12,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:12,829 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:12:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:12,839 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:12:12,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:12,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1574994763, now seen corresponding path program 1 times [2021-12-14 23:12:12,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:12,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524118792] [2021-12-14 23:12:12,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:12,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:12:12,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:12:12,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:12:12,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524118792] [2021-12-14 23:12:12,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524118792] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:12:12,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:12:12,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:12:12,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108836578] [2021-12-14 23:12:12,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:12:12,881 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:12:12,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:12:12,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:12:12,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:12:12,882 INFO L87 Difference]: Start difference. First operand 2434 states and 3714 transitions. cyclomatic complexity: 1344 Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-12-14 23:12:12,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:12:12,910 INFO L93 Difference]: Finished difference Result 4802 states and 7234 transitions. [2021-12-14 23:12:12,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:12:12,910 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4802 states and 7234 transitions. [2021-12-14 23:12:12,966 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 4800 [2021-12-14 23:12:13,034 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4802 states to 4802 states and 7234 transitions. [2021-12-14 23:12:13,034 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4802 [2021-12-14 23:12:13,037 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4802 [2021-12-14 23:12:13,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4802 states and 7234 transitions. [2021-12-14 23:12:13,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:12:13,044 INFO L681 BuchiCegarLoop]: Abstraction has 4802 states and 7234 transitions. [2021-12-14 23:12:13,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4802 states and 7234 transitions. [2021-12-14 23:12:13,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4802 to 4802. [2021-12-14 23:12:13,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4802 states, 4802 states have (on average 1.5064556434818825) internal successors, (7234), 4801 states have internal predecessors, (7234), 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) [2021-12-14 23:12:13,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4802 states to 4802 states and 7234 transitions. [2021-12-14 23:12:13,131 INFO L704 BuchiCegarLoop]: Abstraction has 4802 states and 7234 transitions. [2021-12-14 23:12:13,131 INFO L587 BuchiCegarLoop]: Abstraction has 4802 states and 7234 transitions. [2021-12-14 23:12:13,131 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-14 23:12:13,132 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4802 states and 7234 transitions. [2021-12-14 23:12:13,172 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 4800 [2021-12-14 23:12:13,172 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:12:13,173 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:12:13,174 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:12:13,174 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:12:13,174 INFO L791 eck$LassoCheckResult]: Stem: 14651#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(16, 2);call #Ultimate.allocInit(12, 3); 14625#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_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_~cond~0#1; 14626#L197-1 [2021-12-14 23:12:13,175 INFO L793 eck$LassoCheckResult]: Loop: 14626#L197-1 assume !false;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 15042#L52 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0; 15039#L83 assume !(0 != main_~p1~0#1); 15035#L83-2 assume !(0 != main_~p2~0#1); 15032#L87-1 assume !(0 != main_~p3~0#1); 15029#L91-1 assume !(0 != main_~p4~0#1); 15025#L95-1 assume !(0 != main_~p5~0#1); 15021#L99-1 assume !(0 != main_~p6~0#1); 15022#L103-1 assume !(0 != main_~p7~0#1); 15100#L107-1 assume !(0 != main_~p8~0#1); 15098#L111-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 15096#L115-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 15094#L119-1 assume !(0 != main_~p11~0#1); 15092#L123-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 15090#L127-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 15087#L131-1 assume !(0 != main_~p1~0#1); 15083#L137-1 assume !(0 != main_~p2~0#1); 15080#L142-1 assume !(0 != main_~p3~0#1); 15075#L147-1 assume !(0 != main_~p4~0#1); 15071#L152-1 assume !(0 != main_~p5~0#1); 15069#L157-1 assume !(0 != main_~p6~0#1); 15068#L162-1 assume !(0 != main_~p7~0#1); 15066#L167-1 assume !(0 != main_~p8~0#1); 15062#L172-1 assume !(0 != main_~p9~0#1); 15059#L177-1 assume !(0 != main_~p10~0#1); 15055#L182-1 assume !(0 != main_~p11~0#1); 15050#L187-1 assume !(0 != main_~p12~0#1); 15047#L192-1 assume !(0 != main_~p13~0#1); 14626#L197-1 [2021-12-14 23:12:13,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:13,177 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2021-12-14 23:12:13,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:13,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274129698] [2021-12-14 23:12:13,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:13,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:13,185 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:12:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:13,188 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:12:13,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:13,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1031028791, now seen corresponding path program 1 times [2021-12-14 23:12:13,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:13,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706456070] [2021-12-14 23:12:13,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:13,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:12:13,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:12:13,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:12:13,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706456070] [2021-12-14 23:12:13,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706456070] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:12:13,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:12:13,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:12:13,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974013986] [2021-12-14 23:12:13,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:12:13,209 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:12:13,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:12:13,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:12:13,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:12:13,210 INFO L87 Difference]: Start difference. First operand 4802 states and 7234 transitions. cyclomatic complexity: 2560 Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-12-14 23:12:13,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:12:13,253 INFO L93 Difference]: Finished difference Result 9474 states and 14082 transitions. [2021-12-14 23:12:13,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:12:13,254 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9474 states and 14082 transitions. [2021-12-14 23:12:13,329 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 9472 [2021-12-14 23:12:13,395 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9474 states to 9474 states and 14082 transitions. [2021-12-14 23:12:13,395 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9474 [2021-12-14 23:12:13,406 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9474 [2021-12-14 23:12:13,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9474 states and 14082 transitions. [2021-12-14 23:12:13,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:12:13,421 INFO L681 BuchiCegarLoop]: Abstraction has 9474 states and 14082 transitions. [2021-12-14 23:12:13,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9474 states and 14082 transitions. [2021-12-14 23:12:13,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9474 to 9474. [2021-12-14 23:12:13,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9474 states, 9474 states have (on average 1.486383787207093) internal successors, (14082), 9473 states have internal predecessors, (14082), 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) [2021-12-14 23:12:13,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9474 states to 9474 states and 14082 transitions. [2021-12-14 23:12:13,681 INFO L704 BuchiCegarLoop]: Abstraction has 9474 states and 14082 transitions. [2021-12-14 23:12:13,681 INFO L587 BuchiCegarLoop]: Abstraction has 9474 states and 14082 transitions. [2021-12-14 23:12:13,681 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-14 23:12:13,681 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9474 states and 14082 transitions. [2021-12-14 23:12:13,711 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 9472 [2021-12-14 23:12:13,712 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:12:13,712 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:12:13,713 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:12:13,713 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:12:13,713 INFO L791 eck$LassoCheckResult]: Stem: 28933#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(16, 2);call #Ultimate.allocInit(12, 3); 28907#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_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_~cond~0#1; 28908#L197-1 [2021-12-14 23:12:13,715 INFO L793 eck$LassoCheckResult]: Loop: 28908#L197-1 assume !false;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 29641#L52 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0; 29642#L83 assume !(0 != main_~p1~0#1); 29625#L83-2 assume !(0 != main_~p2~0#1); 29627#L87-1 assume !(0 != main_~p3~0#1); 29609#L91-1 assume !(0 != main_~p4~0#1); 29611#L95-1 assume !(0 != main_~p5~0#1); 29776#L99-1 assume !(0 != main_~p6~0#1); 29773#L103-1 assume !(0 != main_~p7~0#1); 29769#L107-1 assume !(0 != main_~p8~0#1); 29762#L111-1 assume !(0 != main_~p9~0#1); 29757#L115-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 29753#L119-1 assume !(0 != main_~p11~0#1); 29749#L123-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 29745#L127-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 29738#L131-1 assume !(0 != main_~p1~0#1); 29728#L137-1 assume !(0 != main_~p2~0#1); 29722#L142-1 assume !(0 != main_~p3~0#1); 29714#L147-1 assume !(0 != main_~p4~0#1); 29710#L152-1 assume !(0 != main_~p5~0#1); 29421#L157-1 assume !(0 != main_~p6~0#1); 29423#L162-1 assume !(0 != main_~p7~0#1); 29693#L167-1 assume !(0 != main_~p8~0#1); 29694#L172-1 assume !(0 != main_~p9~0#1); 29684#L177-1 assume !(0 != main_~p10~0#1); 29683#L182-1 assume !(0 != main_~p11~0#1); 29788#L187-1 assume !(0 != main_~p12~0#1); 29656#L192-1 assume !(0 != main_~p13~0#1); 28908#L197-1 [2021-12-14 23:12:13,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:13,715 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2021-12-14 23:12:13,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:13,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393601021] [2021-12-14 23:12:13,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:13,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:13,727 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:12:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:13,732 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:12:13,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:13,733 INFO L85 PathProgramCache]: Analyzing trace with hash -963115915, now seen corresponding path program 1 times [2021-12-14 23:12:13,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:13,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915151252] [2021-12-14 23:12:13,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:13,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:12:13,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:12:13,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:12:13,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915151252] [2021-12-14 23:12:13,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915151252] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:12:13,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:12:13,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:12:13,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521197983] [2021-12-14 23:12:13,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:12:13,773 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:12:13,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:12:13,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:12:13,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:12:13,775 INFO L87 Difference]: Start difference. First operand 9474 states and 14082 transitions. cyclomatic complexity: 4864 Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-12-14 23:12:13,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:12:13,872 INFO L93 Difference]: Finished difference Result 18690 states and 27394 transitions. [2021-12-14 23:12:13,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:12:13,873 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18690 states and 27394 transitions. [2021-12-14 23:12:13,990 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 18688 [2021-12-14 23:12:14,116 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18690 states to 18690 states and 27394 transitions. [2021-12-14 23:12:14,117 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18690 [2021-12-14 23:12:14,130 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18690 [2021-12-14 23:12:14,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18690 states and 27394 transitions. [2021-12-14 23:12:14,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:12:14,154 INFO L681 BuchiCegarLoop]: Abstraction has 18690 states and 27394 transitions. [2021-12-14 23:12:14,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18690 states and 27394 transitions. [2021-12-14 23:12:14,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18690 to 18690. [2021-12-14 23:12:14,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18690 states, 18690 states have (on average 1.4657035848047084) internal successors, (27394), 18689 states have internal predecessors, (27394), 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) [2021-12-14 23:12:14,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18690 states to 18690 states and 27394 transitions. [2021-12-14 23:12:14,464 INFO L704 BuchiCegarLoop]: Abstraction has 18690 states and 27394 transitions. [2021-12-14 23:12:14,464 INFO L587 BuchiCegarLoop]: Abstraction has 18690 states and 27394 transitions. [2021-12-14 23:12:14,464 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-14 23:12:14,464 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18690 states and 27394 transitions. [2021-12-14 23:12:14,590 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 18688 [2021-12-14 23:12:14,591 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:12:14,591 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:12:14,591 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:12:14,591 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:12:14,592 INFO L791 eck$LassoCheckResult]: Stem: 57107#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(16, 2);call #Ultimate.allocInit(12, 3); 57077#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_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_~cond~0#1; 57078#L197-1 [2021-12-14 23:12:14,592 INFO L793 eck$LassoCheckResult]: Loop: 57078#L197-1 assume !false;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 57248#L52 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0; 57244#L83 assume !(0 != main_~p1~0#1); 57241#L83-2 assume !(0 != main_~p2~0#1); 57238#L87-1 assume !(0 != main_~p3~0#1); 57234#L91-1 assume !(0 != main_~p4~0#1); 57230#L95-1 assume !(0 != main_~p5~0#1); 57226#L99-1 assume !(0 != main_~p6~0#1); 57221#L103-1 assume !(0 != main_~p7~0#1); 57216#L107-1 assume !(0 != main_~p8~0#1); 57217#L111-1 assume !(0 != main_~p9~0#1); 57538#L115-1 assume !(0 != main_~p10~0#1); 57534#L119-1 assume !(0 != main_~p11~0#1); 57530#L123-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 57526#L127-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 57519#L131-1 assume !(0 != main_~p1~0#1); 57512#L137-1 assume !(0 != main_~p2~0#1); 57494#L142-1 assume !(0 != main_~p3~0#1); 57475#L147-1 assume !(0 != main_~p4~0#1); 57471#L152-1 assume !(0 != main_~p5~0#1); 57467#L157-1 assume !(0 != main_~p6~0#1); 57465#L162-1 assume !(0 != main_~p7~0#1); 57453#L167-1 assume !(0 != main_~p8~0#1); 57451#L172-1 assume !(0 != main_~p9~0#1); 57450#L177-1 assume !(0 != main_~p10~0#1); 57449#L182-1 assume !(0 != main_~p11~0#1); 57253#L187-1 assume !(0 != main_~p12~0#1); 57252#L192-1 assume !(0 != main_~p13~0#1); 57078#L197-1 [2021-12-14 23:12:14,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:14,593 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 10 times [2021-12-14 23:12:14,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:14,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181743963] [2021-12-14 23:12:14,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:14,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:14,597 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:12:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:14,600 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:12:14,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:14,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1743503479, now seen corresponding path program 1 times [2021-12-14 23:12:14,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:14,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063141820] [2021-12-14 23:12:14,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:14,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:12:14,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:12:14,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:12:14,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063141820] [2021-12-14 23:12:14,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063141820] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:12:14,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:12:14,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:12:14,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861151079] [2021-12-14 23:12:14,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:12:14,618 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:12:14,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:12:14,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:12:14,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:12:14,619 INFO L87 Difference]: Start difference. First operand 18690 states and 27394 transitions. cyclomatic complexity: 9216 Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-12-14 23:12:14,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:12:14,794 INFO L93 Difference]: Finished difference Result 36866 states and 53250 transitions. [2021-12-14 23:12:14,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:12:14,795 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36866 states and 53250 transitions. [2021-12-14 23:12:14,972 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 36864 [2021-12-14 23:12:15,096 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36866 states to 36866 states and 53250 transitions. [2021-12-14 23:12:15,097 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36866 [2021-12-14 23:12:15,130 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36866 [2021-12-14 23:12:15,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36866 states and 53250 transitions. [2021-12-14 23:12:15,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:12:15,175 INFO L681 BuchiCegarLoop]: Abstraction has 36866 states and 53250 transitions. [2021-12-14 23:12:15,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36866 states and 53250 transitions. [2021-12-14 23:12:15,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36866 to 36866. [2021-12-14 23:12:15,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36866 states, 36866 states have (on average 1.4444203330982477) internal successors, (53250), 36865 states have internal predecessors, (53250), 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) [2021-12-14 23:12:15,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36866 states to 36866 states and 53250 transitions. [2021-12-14 23:12:15,952 INFO L704 BuchiCegarLoop]: Abstraction has 36866 states and 53250 transitions. [2021-12-14 23:12:15,952 INFO L587 BuchiCegarLoop]: Abstraction has 36866 states and 53250 transitions. [2021-12-14 23:12:15,952 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-12-14 23:12:15,953 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36866 states and 53250 transitions. [2021-12-14 23:12:16,146 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 36864 [2021-12-14 23:12:16,146 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:12:16,146 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:12:16,147 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:12:16,147 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:12:16,147 INFO L791 eck$LassoCheckResult]: Stem: 112669#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(16, 2);call #Ultimate.allocInit(12, 3); 112639#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_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_~cond~0#1; 112640#L197-1 [2021-12-14 23:12:16,148 INFO L793 eck$LassoCheckResult]: Loop: 112640#L197-1 assume !false;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 113657#L52 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0; 113653#L83 assume !(0 != main_~p1~0#1); 113649#L83-2 assume !(0 != main_~p2~0#1); 113647#L87-1 assume !(0 != main_~p3~0#1); 113643#L91-1 assume !(0 != main_~p4~0#1); 113639#L95-1 assume !(0 != main_~p5~0#1); 113635#L99-1 assume !(0 != main_~p6~0#1); 113631#L103-1 assume !(0 != main_~p7~0#1); 113627#L107-1 assume !(0 != main_~p8~0#1); 113623#L111-1 assume !(0 != main_~p9~0#1); 113624#L115-1 assume !(0 != main_~p10~0#1); 113702#L119-1 assume !(0 != main_~p11~0#1); 113699#L123-1 assume !(0 != main_~p12~0#1); 113697#L127-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 113695#L131-1 assume !(0 != main_~p1~0#1); 113693#L137-1 assume !(0 != main_~p2~0#1); 113681#L142-1 assume !(0 != main_~p3~0#1); 113675#L147-1 assume !(0 != main_~p4~0#1); 113544#L152-1 assume !(0 != main_~p5~0#1); 113545#L157-1 assume !(0 != main_~p6~0#1); 113491#L162-1 assume !(0 != main_~p7~0#1); 113493#L167-1 assume !(0 != main_~p8~0#1); 113427#L172-1 assume !(0 != main_~p9~0#1); 113428#L177-1 assume !(0 != main_~p10~0#1); 113669#L182-1 assume !(0 != main_~p11~0#1); 113664#L187-1 assume !(0 != main_~p12~0#1); 113661#L192-1 assume !(0 != main_~p13~0#1); 112640#L197-1 [2021-12-14 23:12:16,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:16,148 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 11 times [2021-12-14 23:12:16,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:16,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152003535] [2021-12-14 23:12:16,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:16,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:16,168 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:12:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:16,172 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:12:16,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:16,177 INFO L85 PathProgramCache]: Analyzing trace with hash 463639801, now seen corresponding path program 1 times [2021-12-14 23:12:16,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:16,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879438014] [2021-12-14 23:12:16,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:16,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:12:16,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:12:16,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:12:16,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879438014] [2021-12-14 23:12:16,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879438014] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:12:16,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:12:16,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 23:12:16,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489133625] [2021-12-14 23:12:16,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:12:16,215 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:12:16,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:12:16,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:12:16,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:12:16,216 INFO L87 Difference]: Start difference. First operand 36866 states and 53250 transitions. cyclomatic complexity: 17408 Second operand has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-12-14 23:12:16,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:12:16,425 INFO L93 Difference]: Finished difference Result 72706 states and 103426 transitions. [2021-12-14 23:12:16,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:12:16,425 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72706 states and 103426 transitions. [2021-12-14 23:12:16,866 INFO L131 ngComponentsAnalysis]: Automaton has 2048 accepting balls. 72704 [2021-12-14 23:12:17,247 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72706 states to 72706 states and 103426 transitions. [2021-12-14 23:12:17,248 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 72706 [2021-12-14 23:12:17,282 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 72706 [2021-12-14 23:12:17,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72706 states and 103426 transitions. [2021-12-14 23:12:17,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:12:17,341 INFO L681 BuchiCegarLoop]: Abstraction has 72706 states and 103426 transitions. [2021-12-14 23:12:17,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72706 states and 103426 transitions. [2021-12-14 23:12:18,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72706 to 72706. [2021-12-14 23:12:18,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72706 states, 72706 states have (on average 1.4225235881495337) internal successors, (103426), 72705 states have internal predecessors, (103426), 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) [2021-12-14 23:12:18,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72706 states to 72706 states and 103426 transitions. [2021-12-14 23:12:18,327 INFO L704 BuchiCegarLoop]: Abstraction has 72706 states and 103426 transitions. [2021-12-14 23:12:18,327 INFO L587 BuchiCegarLoop]: Abstraction has 72706 states and 103426 transitions. [2021-12-14 23:12:18,327 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-12-14 23:12:18,327 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72706 states and 103426 transitions. [2021-12-14 23:12:18,685 INFO L131 ngComponentsAnalysis]: Automaton has 2048 accepting balls. 72704 [2021-12-14 23:12:18,685 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:12:18,686 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:12:18,687 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:12:18,687 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:12:18,687 INFO L791 eck$LassoCheckResult]: Stem: 222245#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(16, 2);call #Ultimate.allocInit(12, 3); 222217#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_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_~cond~0#1; 222218#L197-1 [2021-12-14 23:12:18,687 INFO L793 eck$LassoCheckResult]: Loop: 222218#L197-1 assume !false;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 223381#L52 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0; 223379#L83 assume !(0 != main_~p1~0#1); 223377#L83-2 assume !(0 != main_~p2~0#1); 223376#L87-1 assume !(0 != main_~p3~0#1); 223374#L91-1 assume !(0 != main_~p4~0#1); 223372#L95-1 assume !(0 != main_~p5~0#1); 223370#L99-1 assume !(0 != main_~p6~0#1); 223368#L103-1 assume !(0 != main_~p7~0#1); 223366#L107-1 assume !(0 != main_~p8~0#1); 223364#L111-1 assume !(0 != main_~p9~0#1); 223362#L115-1 assume !(0 != main_~p10~0#1); 223360#L119-1 assume !(0 != main_~p11~0#1); 223357#L123-1 assume !(0 != main_~p12~0#1); 223358#L127-1 assume !(0 != main_~p13~0#1); 223341#L131-1 assume !(0 != main_~p1~0#1); 223343#L137-1 assume !(0 != main_~p2~0#1); 223327#L142-1 assume !(0 != main_~p3~0#1); 223326#L147-1 assume !(0 != main_~p4~0#1); 223309#L152-1 assume !(0 != main_~p5~0#1); 223310#L157-1 assume !(0 != main_~p6~0#1); 223291#L162-1 assume !(0 != main_~p7~0#1); 223293#L167-1 assume !(0 != main_~p8~0#1); 223278#L172-1 assume !(0 != main_~p9~0#1); 223279#L177-1 assume !(0 != main_~p10~0#1); 223267#L182-1 assume !(0 != main_~p11~0#1); 223266#L187-1 assume !(0 != main_~p12~0#1); 223382#L192-1 assume !(0 != main_~p13~0#1); 222218#L197-1 [2021-12-14 23:12:18,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:18,688 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 12 times [2021-12-14 23:12:18,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:18,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788335210] [2021-12-14 23:12:18,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:18,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:18,692 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:12:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:18,695 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:12:18,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:18,696 INFO L85 PathProgramCache]: Analyzing trace with hash -547477449, now seen corresponding path program 1 times [2021-12-14 23:12:18,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:18,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554336333] [2021-12-14 23:12:18,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:18,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:18,701 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:12:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:18,708 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:12:18,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:18,709 INFO L85 PathProgramCache]: Analyzing trace with hash 496424185, now seen corresponding path program 1 times [2021-12-14 23:12:18,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:18,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119428924] [2021-12-14 23:12:18,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:18,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:18,714 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:12:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:18,723 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:12:19,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.12 11:12:19 BoogieIcfgContainer [2021-12-14 23:12:19,068 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-14 23:12:19,069 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 23:12:19,069 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 23:12:19,069 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 23:12:19,070 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:12:11" (3/4) ... [2021-12-14 23:12:19,072 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-14 23:12:19,106 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 23:12:19,119 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 23:12:19,120 INFO L158 Benchmark]: Toolchain (without parser) took 8189.14ms. Allocated memory was 104.9MB in the beginning and 5.2GB in the end (delta: 5.1GB). Free memory was 74.7MB in the beginning and 4.6GB in the end (delta: -4.5GB). Peak memory consumption was 594.6MB. Max. memory is 16.1GB. [2021-12-14 23:12:19,120 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory was 60.3MB in the beginning and 60.2MB in the end (delta: 41.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:12:19,120 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.71ms. Allocated memory is still 104.9MB. Free memory was 74.5MB in the beginning and 80.5MB in the end (delta: -6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 23:12:19,121 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.23ms. Allocated memory is still 104.9MB. Free memory was 80.5MB in the beginning and 78.5MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:12:19,121 INFO L158 Benchmark]: Boogie Preprocessor took 40.31ms. Allocated memory is still 104.9MB. Free memory was 78.5MB in the beginning and 77.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:12:19,121 INFO L158 Benchmark]: RCFGBuilder took 347.97ms. Allocated memory is still 104.9MB. Free memory was 77.3MB in the beginning and 65.1MB in the end (delta: 12.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-14 23:12:19,122 INFO L158 Benchmark]: BuchiAutomizer took 7433.27ms. Allocated memory was 104.9MB in the beginning and 5.2GB in the end (delta: 5.1GB). Free memory was 65.1MB in the beginning and 4.6GB in the end (delta: -4.5GB). Peak memory consumption was 585.1MB. Max. memory is 16.1GB. [2021-12-14 23:12:19,122 INFO L158 Benchmark]: Witness Printer took 50.18ms. Allocated memory is still 5.2GB. Free memory was 4.6GB in the beginning and 4.6GB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:12:19,124 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory was 60.3MB in the beginning and 60.2MB in the end (delta: 41.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.71ms. Allocated memory is still 104.9MB. Free memory was 74.5MB in the beginning and 80.5MB in the end (delta: -6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.23ms. Allocated memory is still 104.9MB. Free memory was 80.5MB in the beginning and 78.5MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.31ms. Allocated memory is still 104.9MB. Free memory was 78.5MB in the beginning and 77.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 347.97ms. Allocated memory is still 104.9MB. Free memory was 77.3MB in the beginning and 65.1MB in the end (delta: 12.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * BuchiAutomizer took 7433.27ms. Allocated memory was 104.9MB in the beginning and 5.2GB in the end (delta: 5.1GB). Free memory was 65.1MB in the beginning and 4.6GB in the end (delta: -4.5GB). Peak memory consumption was 585.1MB. Max. memory is 16.1GB. * Witness Printer took 50.18ms. Allocated memory is still 5.2GB. Free memory was 4.6GB in the beginning and 4.6GB in the end (delta: 3.0MB). 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 11 terminating modules (11 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.11 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 72706 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.3s and 12 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 0. Minimization of det autom 11. Minimization of nondet autom 0. Automata minimization 2.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 1.7s Buchi closure took 0.1s. Biggest automaton had 72706 states and ocurred in iteration 11. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 589 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 589 mSDsluCounter, 1842 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 709 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 55 IncrementalHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 1133 mSDtfsCounter, 55 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI11 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 50]: 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 {p11=0, p13=0, lk5=0, p1=0, NULL=0, lk13=0, p9=0, lk9=0, NULL=1, lk12=0, cond=4, p5=0, p12=0, p10=0, lk2=0, p4=0, p8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f1861a=0, lk11=0, lk6=0, lk1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ff5f98e=0, p3=0, lk3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3815e206=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@15634362=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3918673b=0, p7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@10f7941e=0, \result=0, lk10=0, lk7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@77648cbd=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@792b051d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2c83643=0, p6=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7893a89e=0, p2=0, lk4=0, lk8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@cf2a8ec=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2dd04782=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3a125e55=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5f20d6d1=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 50]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L48] int cond; Loop: [L50] COND TRUE 1 [L51] cond = __VERIFIER_nondet_int() [L52] COND FALSE !(cond == 0) [L55] lk1 = 0 [L57] lk2 = 0 [L59] lk3 = 0 [L61] lk4 = 0 [L63] lk5 = 0 [L65] lk6 = 0 [L67] lk7 = 0 [L69] lk8 = 0 [L71] lk9 = 0 [L73] lk10 = 0 [L75] lk11 = 0 [L77] lk12 = 0 [L79] lk13 = 0 [L83] COND FALSE !(p1 != 0) [L87] COND FALSE !(p2 != 0) [L91] COND FALSE !(p3 != 0) [L95] COND FALSE !(p4 != 0) [L99] COND FALSE !(p5 != 0) [L103] COND FALSE !(p6 != 0) [L107] COND FALSE !(p7 != 0) [L111] COND FALSE !(p8 != 0) [L115] COND FALSE !(p9 != 0) [L119] COND FALSE !(p10 != 0) [L123] COND FALSE !(p11 != 0) [L127] COND FALSE !(p12 != 0) [L131] COND FALSE !(p13 != 0) [L137] COND FALSE !(p1 != 0) [L142] COND FALSE !(p2 != 0) [L147] COND FALSE !(p3 != 0) [L152] COND FALSE !(p4 != 0) [L157] COND FALSE !(p5 != 0) [L162] COND FALSE !(p6 != 0) [L167] COND FALSE !(p7 != 0) [L172] COND FALSE !(p8 != 0) [L177] COND FALSE !(p9 != 0) [L182] COND FALSE !(p10 != 0) [L187] COND FALSE !(p11 != 0) [L192] COND FALSE !(p12 != 0) [L197] COND FALSE !(p13 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-14 23:12:19,184 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)