./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e8d55036 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/termination-crafted/Arrays01-EquivalentConstantIndices-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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 64bit --witnessprinter.graph.data.programhash cad2c6f6e8ebe2adcd550e4a56b83be37e52f812ae33bfb645236c6925734dbf --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 23:12:02,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 23:12:02,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 23:12:02,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 23:12:02,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 23:12:02,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 23:12:02,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 23:12:02,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 23:12:02,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 23:12:02,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 23:12:02,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 23:12:02,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 23:12:02,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 23:12:02,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 23:12:02,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 23:12:02,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 23:12:02,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 23:12:02,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 23:12:02,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 23:12:02,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 23:12:02,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 23:12:02,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 23:12:02,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 23:12:02,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 23:12:02,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 23:12:02,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 23:12:02,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 23:12:02,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 23:12:02,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 23:12:02,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 23:12:02,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 23:12:02,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 23:12:02,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 23:12:02,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 23:12:02,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 23:12:02,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 23:12:02,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 23:12:02,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 23:12:02,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 23:12:02,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 23:12:02,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 23:12:02,408 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-15 23:12:02,429 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 23:12:02,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 23:12:02,430 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 23:12:02,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 23:12:02,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 23:12:02,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 23:12:02,431 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 23:12:02,432 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-15 23:12:02,432 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-15 23:12:02,432 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-15 23:12:02,433 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-15 23:12:02,433 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-15 23:12:02,433 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-15 23:12:02,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 23:12:02,433 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 23:12:02,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 23:12:02,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 23:12:02,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-15 23:12:02,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-15 23:12:02,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-15 23:12:02,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 23:12:02,434 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-15 23:12:02,434 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 23:12:02,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-15 23:12:02,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 23:12:02,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 23:12:02,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 23:12:02,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 23:12:02,436 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-15 23:12:02,437 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cad2c6f6e8ebe2adcd550e4a56b83be37e52f812ae33bfb645236c6925734dbf [2023-02-15 23:12:02,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 23:12:02,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 23:12:02,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 23:12:02,660 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 23:12:02,660 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 23:12:02,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2023-02-15 23:12:03,600 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 23:12:03,746 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 23:12:03,746 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2023-02-15 23:12:03,750 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d83da93f/c3cc08d98a0c4bbe8650e922af7a2ed4/FLAGe7579553e [2023-02-15 23:12:03,762 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d83da93f/c3cc08d98a0c4bbe8650e922af7a2ed4 [2023-02-15 23:12:03,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 23:12:03,765 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 23:12:03,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 23:12:03,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 23:12:03,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 23:12:03,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:12:03" (1/1) ... [2023-02-15 23:12:03,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@90eca78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:12:03, skipping insertion in model container [2023-02-15 23:12:03,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:12:03" (1/1) ... [2023-02-15 23:12:03,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 23:12:03,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 23:12:03,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 23:12:03,904 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 23:12:03,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 23:12:03,930 INFO L208 MainTranslator]: Completed translation [2023-02-15 23:12:03,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:12:03 WrapperNode [2023-02-15 23:12:03,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 23:12:03,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 23:12:03,932 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 23:12:03,932 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 23:12:03,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:12:03" (1/1) ... [2023-02-15 23:12:03,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:12:03" (1/1) ... [2023-02-15 23:12:03,954 INFO L138 Inliner]: procedures = 8, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 32 [2023-02-15 23:12:03,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 23:12:03,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 23:12:03,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 23:12:03,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 23:12:03,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:12:03" (1/1) ... [2023-02-15 23:12:03,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:12:03" (1/1) ... [2023-02-15 23:12:03,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:12:03" (1/1) ... [2023-02-15 23:12:03,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:12:03" (1/1) ... [2023-02-15 23:12:03,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:12:03" (1/1) ... [2023-02-15 23:12:03,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:12:03" (1/1) ... [2023-02-15 23:12:03,981 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:12:03" (1/1) ... [2023-02-15 23:12:03,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:12:03" (1/1) ... [2023-02-15 23:12:03,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 23:12:03,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 23:12:03,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 23:12:03,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 23:12:03,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:12:03" (1/1) ... [2023-02-15 23:12:03,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:12:03,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:12:04,011 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) [2023-02-15 23:12:04,024 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 [2023-02-15 23:12:04,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 23:12:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 23:12:04,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 23:12:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 23:12:04,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 23:12:04,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 23:12:04,080 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 23:12:04,081 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 23:12:04,153 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 23:12:04,157 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 23:12:04,165 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 23:12:04,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:12:04 BoogieIcfgContainer [2023-02-15 23:12:04,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 23:12:04,167 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-15 23:12:04,167 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-15 23:12:04,170 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-15 23:12:04,171 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 23:12:04,171 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.02 11:12:03" (1/3) ... [2023-02-15 23:12:04,172 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f1f404f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 11:12:04, skipping insertion in model container [2023-02-15 23:12:04,173 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 23:12:04,173 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:12:03" (2/3) ... [2023-02-15 23:12:04,173 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f1f404f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 11:12:04, skipping insertion in model container [2023-02-15 23:12:04,173 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 23:12:04,173 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:12:04" (3/3) ... [2023-02-15 23:12:04,175 INFO L332 chiAutomizerObserver]: Analyzing ICFG Arrays01-EquivalentConstantIndices-1.c [2023-02-15 23:12:04,219 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-15 23:12:04,219 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-15 23:12:04,219 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-15 23:12:04,219 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-15 23:12:04,219 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-15 23:12:04,219 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-15 23:12:04,219 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-15 23:12:04,220 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-15 23:12:04,231 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 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) [2023-02-15 23:12:04,242 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2023-02-15 23:12:04,242 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:12:04,242 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:12:04,246 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-15 23:12:04,246 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-15 23:12:04,246 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-15 23:12:04,246 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 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) [2023-02-15 23:12:04,247 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2023-02-15 23:12:04,247 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:12:04,247 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:12:04,248 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-15 23:12:04,248 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-15 23:12:04,253 INFO L748 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~post0#1, main_~i~0#1, main_#t~mem3#1, main_#t~mem2#1, main_~#a~0#1.base, main_~#a~0#1.offset;call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(4192);main_~i~0#1 := 0; 8#L13-3true [2023-02-15 23:12:04,261 INFO L750 eck$LassoCheckResult]: Loop: 8#L13-3true assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 6#L13-2true main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 8#L13-3true [2023-02-15 23:12:04,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:12:04,266 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-15 23:12:04,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:12:04,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231471147] [2023-02-15 23:12:04,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:12:04,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:12:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:12:04,374 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:12:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:12:04,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:12:04,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:12:04,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2023-02-15 23:12:04,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:12:04,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525143156] [2023-02-15 23:12:04,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:12:04,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:12:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:12:04,426 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:12:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:12:04,441 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:12:04,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:12:04,443 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2023-02-15 23:12:04,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:12:04,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429773443] [2023-02-15 23:12:04,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:12:04,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:12:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:12:04,466 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:12:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:12:04,475 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:12:04,699 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:12:04,699 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:12:04,699 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:12:04,700 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:12:04,700 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 23:12:04,700 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:12:04,700 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:12:04,700 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:12:04,701 INFO L133 ssoRankerPreferences]: Filename of dumped script: Arrays01-EquivalentConstantIndices-1.c_Iteration1_Lasso [2023-02-15 23:12:04,701 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:12:04,701 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:12:04,715 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:12:04,722 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:12:04,724 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:12:04,728 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:12:04,734 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:12:04,736 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:12:04,817 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:12:04,920 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:12:04,923 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 23:12:04,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:12:04,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:12:04,939 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:12:04,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-02-15 23:12:04,943 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:12:04,950 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:12:04,950 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:12:04,951 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:12:04,951 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:12:04,954 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:12:04,955 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:12:04,971 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:12:04,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-02-15 23:12:04,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:12:04,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:12:05,004 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:12:05,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-02-15 23:12:05,007 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:12:05,014 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:12:05,014 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:12:05,015 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:12:05,015 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:12:05,015 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:12:05,016 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:12:05,017 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:12:05,033 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:12:05,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-02-15 23:12:05,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:12:05,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:12:05,041 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:12:05,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-02-15 23:12:05,045 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:12:05,051 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:12:05,051 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:12:05,051 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:12:05,051 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:12:05,052 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:12:05,053 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:12:05,053 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:12:05,066 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:12:05,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-02-15 23:12:05,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:12:05,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:12:05,071 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:12:05,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-02-15 23:12:05,088 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:12:05,095 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:12:05,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:12:05,095 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:12:05,095 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:12:05,097 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:12:05,097 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:12:05,106 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:12:05,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-02-15 23:12:05,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:12:05,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:12:05,112 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:12:05,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-02-15 23:12:05,115 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:12:05,120 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:12:05,121 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:12:05,121 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:12:05,121 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:12:05,121 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:12:05,121 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:12:05,121 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:12:05,122 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:12:05,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-02-15 23:12:05,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:12:05,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:12:05,126 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:12:05,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-02-15 23:12:05,129 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:12:05,136 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:12:05,136 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:12:05,136 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:12:05,136 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:12:05,136 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:12:05,137 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:12:05,137 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:12:05,138 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:12:05,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-02-15 23:12:05,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:12:05,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:12:05,145 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:12:05,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-02-15 23:12:05,148 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:12:05,154 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:12:05,154 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:12:05,154 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:12:05,154 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:12:05,156 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:12:05,156 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:12:05,167 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:12:05,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-02-15 23:12:05,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:12:05,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:12:05,171 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:12:05,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-02-15 23:12:05,174 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:12:05,180 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:12:05,180 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:12:05,180 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:12:05,180 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:12:05,182 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:12:05,182 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:12:05,207 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:12:05,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-02-15 23:12:05,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:12:05,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:12:05,216 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:12:05,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-02-15 23:12:05,220 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:12:05,226 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:12:05,226 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:12:05,226 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:12:05,226 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:12:05,228 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:12:05,228 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:12:05,244 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:12:05,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-02-15 23:12:05,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:12:05,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:12:05,249 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:12:05,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-02-15 23:12:05,252 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:12:05,267 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:12:05,267 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:12:05,267 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:12:05,267 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:12:05,267 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:12:05,268 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:12:05,268 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:12:05,279 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:12:05,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-02-15 23:12:05,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:12:05,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:12:05,288 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:12:05,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-02-15 23:12:05,291 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:12:05,299 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:12:05,299 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:12:05,299 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:12:05,299 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:12:05,304 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:12:05,305 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:12:05,320 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 23:12:05,337 INFO L443 ModelExtractionUtils]: Simplification made 11 calls to the SMT solver. [2023-02-15 23:12:05,337 INFO L444 ModelExtractionUtils]: 0 out of 13 variables were initially zero. Simplification set additionally 10 variables to zero. [2023-02-15 23:12:05,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:12:05,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:12:05,340 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:12:05,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-02-15 23:12:05,343 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 23:12:05,367 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2023-02-15 23:12:05,367 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 23:12:05,367 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~#a~0#1.base)_1, ULTIMATE.start_main_~i~0#1) = 2095*v_rep(select #length ULTIMATE.start_main_~#a~0#1.base)_1 - 8*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-02-15 23:12:05,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-02-15 23:12:05,377 INFO L156 tatePredicateManager]: 1 out of 1 supporting invariants were superfluous and have been removed [2023-02-15 23:12:05,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:12:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:12:05,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:12:05,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:12:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:12:05,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 23:12:05,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:12:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:12:05,457 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-15 23:12:05,459 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:12:05,502 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 22 states and 31 transitions. Complement of second has 8 states. [2023-02-15 23:12:05,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-02-15 23:12:05,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:12:05,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2023-02-15 23:12:05,509 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 2 letters. Loop has 2 letters. [2023-02-15 23:12:05,510 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:12:05,510 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 4 letters. Loop has 2 letters. [2023-02-15 23:12:05,510 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:12:05,510 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 2 letters. Loop has 4 letters. [2023-02-15 23:12:05,510 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:12:05,511 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 31 transitions. [2023-02-15 23:12:05,514 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 23:12:05,516 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 8 states and 10 transitions. [2023-02-15 23:12:05,517 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-02-15 23:12:05,517 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-02-15 23:12:05,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2023-02-15 23:12:05,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 23:12:05,518 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 10 transitions. [2023-02-15 23:12:05,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2023-02-15 23:12:05,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2023-02-15 23:12:05,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:12:05,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2023-02-15 23:12:05,534 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2023-02-15 23:12:05,534 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2023-02-15 23:12:05,535 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-15 23:12:05,535 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2023-02-15 23:12:05,535 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 23:12:05,535 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:12:05,535 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:12:05,535 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-15 23:12:05,536 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-15 23:12:05,536 INFO L748 eck$LassoCheckResult]: Stem: 79#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 80#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~post0#1, main_~i~0#1, main_#t~mem3#1, main_#t~mem2#1, main_~#a~0#1.base, main_~#a~0#1.offset;call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(4192);main_~i~0#1 := 0; 81#L13-3 assume !(main_~i~0#1 < 1048); 75#L17-2 [2023-02-15 23:12:05,536 INFO L750 eck$LassoCheckResult]: Loop: 75#L17-2 call main_#t~mem2#1 := read~int(main_~#a~0#1.base, 12 + main_~#a~0#1.offset, 4); 76#L17 assume !!(main_#t~mem2#1 >= 0);havoc main_#t~mem2#1;call main_#t~mem3#1 := read~int(main_~#a~0#1.base, 12 + main_~#a~0#1.offset, 4);call write~int(main_#t~mem3#1 - 1, main_~#a~0#1.base, 12 + main_~#a~0#1.offset, 4);havoc main_#t~mem3#1; 75#L17-2 [2023-02-15 23:12:05,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:12:05,537 INFO L85 PathProgramCache]: Analyzing trace with hash 29861, now seen corresponding path program 1 times [2023-02-15 23:12:05,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:12:05,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442153684] [2023-02-15 23:12:05,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:12:05,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:12:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:12:05,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:12:05,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:12:05,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442153684] [2023-02-15 23:12:05,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442153684] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:12:05,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:12:05,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 23:12:05,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287720795] [2023-02-15 23:12:05,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:12:05,573 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-02-15 23:12:05,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:12:05,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1574, now seen corresponding path program 1 times [2023-02-15 23:12:05,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:12:05,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305146991] [2023-02-15 23:12:05,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:12:05,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:12:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:12:05,579 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:12:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:12:05,582 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:12:05,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:12:05,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 23:12:05,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 23:12:05,609 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-02-15 23:12:05,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:12:05,617 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2023-02-15 23:12:05,617 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2023-02-15 23:12:05,617 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 23:12:05,617 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 9 transitions. [2023-02-15 23:12:05,618 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-02-15 23:12:05,618 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-02-15 23:12:05,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2023-02-15 23:12:05,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 23:12:05,618 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2023-02-15 23:12:05,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2023-02-15 23:12:05,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2023-02-15 23:12:05,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:12:05,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2023-02-15 23:12:05,619 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-02-15 23:12:05,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 23:12:05,620 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-02-15 23:12:05,621 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-15 23:12:05,621 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2023-02-15 23:12:05,621 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 23:12:05,621 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:12:05,621 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:12:05,621 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-02-15 23:12:05,622 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-15 23:12:05,622 INFO L748 eck$LassoCheckResult]: Stem: 100#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 101#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~post0#1, main_~i~0#1, main_#t~mem3#1, main_#t~mem2#1, main_~#a~0#1.base, main_~#a~0#1.offset;call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(4192);main_~i~0#1 := 0; 102#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 98#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 99#L13-3 assume !(main_~i~0#1 < 1048); 96#L17-2 [2023-02-15 23:12:05,622 INFO L750 eck$LassoCheckResult]: Loop: 96#L17-2 call main_#t~mem2#1 := read~int(main_~#a~0#1.base, 12 + main_~#a~0#1.offset, 4); 97#L17 assume !!(main_#t~mem2#1 >= 0);havoc main_#t~mem2#1;call main_#t~mem3#1 := read~int(main_~#a~0#1.base, 12 + main_~#a~0#1.offset, 4);call write~int(main_#t~mem3#1 - 1, main_~#a~0#1.base, 12 + main_~#a~0#1.offset, 4);havoc main_#t~mem3#1; 96#L17-2 [2023-02-15 23:12:05,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:12:05,622 INFO L85 PathProgramCache]: Analyzing trace with hash 28698723, now seen corresponding path program 1 times [2023-02-15 23:12:05,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:12:05,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673390166] [2023-02-15 23:12:05,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:12:05,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:12:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:12:05,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:12:05,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:12:05,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673390166] [2023-02-15 23:12:05,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673390166] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:12:05,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097856228] [2023-02-15 23:12:05,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:12:05,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:12:05,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:12:05,661 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:12:05,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-15 23:12:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:12:05,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 23:12:05,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:12:05,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:12:05,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:12:05,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:12:05,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097856228] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:12:05,725 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:12:05,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-02-15 23:12:05,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126055218] [2023-02-15 23:12:05,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:12:05,726 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-02-15 23:12:05,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:12:05,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1574, now seen corresponding path program 2 times [2023-02-15 23:12:05,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:12:05,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428539979] [2023-02-15 23:12:05,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:12:05,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:12:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:12:05,741 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:12:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:12:05,753 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:12:05,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:12:05,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 23:12:05,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-02-15 23:12:05,787 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:12:05,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:12:05,808 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2023-02-15 23:12:05,808 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2023-02-15 23:12:05,810 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 23:12:05,811 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 14 transitions. [2023-02-15 23:12:05,811 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-02-15 23:12:05,811 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-02-15 23:12:05,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2023-02-15 23:12:05,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 23:12:05,811 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-02-15 23:12:05,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2023-02-15 23:12:05,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-02-15 23:12:05,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:12:05,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-02-15 23:12:05,813 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-02-15 23:12:05,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 23:12:05,814 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-02-15 23:12:05,814 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-15 23:12:05,814 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 14 transitions. [2023-02-15 23:12:05,814 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 23:12:05,814 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:12:05,814 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:12:05,815 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1] [2023-02-15 23:12:05,815 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-15 23:12:05,815 INFO L748 eck$LassoCheckResult]: Stem: 154#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 155#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~post0#1, main_~i~0#1, main_#t~mem3#1, main_#t~mem2#1, main_~#a~0#1.base, main_~#a~0#1.offset;call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(4192);main_~i~0#1 := 0; 156#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 152#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 153#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 157#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 162#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 161#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 160#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 159#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 158#L13-3 assume !(main_~i~0#1 < 1048); 150#L17-2 [2023-02-15 23:12:05,815 INFO L750 eck$LassoCheckResult]: Loop: 150#L17-2 call main_#t~mem2#1 := read~int(main_~#a~0#1.base, 12 + main_~#a~0#1.offset, 4); 151#L17 assume !!(main_#t~mem2#1 >= 0);havoc main_#t~mem2#1;call main_#t~mem3#1 := read~int(main_~#a~0#1.base, 12 + main_~#a~0#1.offset, 4);call write~int(main_#t~mem3#1 - 1, main_~#a~0#1.base, 12 + main_~#a~0#1.offset, 4);havoc main_#t~mem3#1; 150#L17-2 [2023-02-15 23:12:05,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:12:05,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1081477475, now seen corresponding path program 2 times [2023-02-15 23:12:05,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:12:05,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091396398] [2023-02-15 23:12:05,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:12:05,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:12:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:12:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:12:05,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:12:05,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091396398] [2023-02-15 23:12:05,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091396398] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:12:05,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63718583] [2023-02-15 23:12:05,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:12:05,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:12:05,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:12:05,881 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:12:05,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-15 23:12:05,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:12:05,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:12:05,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 23:12:05,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:12:05,950 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:12:05,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:12:06,002 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:12:06,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63718583] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:12:06,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:12:06,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-02-15 23:12:06,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451427261] [2023-02-15 23:12:06,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:12:06,004 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-02-15 23:12:06,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:12:06,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1574, now seen corresponding path program 3 times [2023-02-15 23:12:06,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:12:06,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032520183] [2023-02-15 23:12:06,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:12:06,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:12:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:12:06,011 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:12:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:12:06,018 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:12:06,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:12:06,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 23:12:06,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-15 23:12:06,049 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. cyclomatic complexity: 3 Second operand has 13 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 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) [2023-02-15 23:12:06,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:12:06,076 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2023-02-15 23:12:06,076 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 26 transitions. [2023-02-15 23:12:06,077 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 23:12:06,078 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 25 states and 26 transitions. [2023-02-15 23:12:06,078 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-02-15 23:12:06,078 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-02-15 23:12:06,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 26 transitions. [2023-02-15 23:12:06,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 23:12:06,078 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 26 transitions. [2023-02-15 23:12:06,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 26 transitions. [2023-02-15 23:12:06,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-02-15 23:12:06,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.04) internal successors, (26), 24 states have internal predecessors, (26), 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) [2023-02-15 23:12:06,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2023-02-15 23:12:06,080 INFO L240 hiAutomatonCegarLoop]: Abstraction has 25 states and 26 transitions. [2023-02-15 23:12:06,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 23:12:06,081 INFO L428 stractBuchiCegarLoop]: Abstraction has 25 states and 26 transitions. [2023-02-15 23:12:06,081 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-02-15 23:12:06,081 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 26 transitions. [2023-02-15 23:12:06,082 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 23:12:06,082 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:12:06,082 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:12:06,082 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 10, 1, 1, 1] [2023-02-15 23:12:06,082 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-15 23:12:06,083 INFO L748 eck$LassoCheckResult]: Stem: 271#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 272#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~post0#1, main_~i~0#1, main_#t~mem3#1, main_#t~mem2#1, main_~#a~0#1.base, main_~#a~0#1.offset;call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(4192);main_~i~0#1 := 0; 268#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 269#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 270#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 266#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 267#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 288#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 287#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 286#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 285#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 284#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 283#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 282#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 281#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 280#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 279#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 278#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 277#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 276#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 275#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 274#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 273#L13-3 assume !(main_~i~0#1 < 1048); 264#L17-2 [2023-02-15 23:12:06,083 INFO L750 eck$LassoCheckResult]: Loop: 264#L17-2 call main_#t~mem2#1 := read~int(main_~#a~0#1.base, 12 + main_~#a~0#1.offset, 4); 265#L17 assume !!(main_#t~mem2#1 >= 0);havoc main_#t~mem2#1;call main_#t~mem3#1 := read~int(main_~#a~0#1.base, 12 + main_~#a~0#1.offset, 4);call write~int(main_#t~mem3#1 - 1, main_~#a~0#1.base, 12 + main_~#a~0#1.offset, 4);havoc main_#t~mem3#1; 264#L17-2 [2023-02-15 23:12:06,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:12:06,083 INFO L85 PathProgramCache]: Analyzing trace with hash 899905681, now seen corresponding path program 3 times [2023-02-15 23:12:06,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:12:06,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689562689] [2023-02-15 23:12:06,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:12:06,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:12:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:12:06,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-02-15 23:12:06,306 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:12:06,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:12:06,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689562689] [2023-02-15 23:12:06,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689562689] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:12:06,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013868128] [2023-02-15 23:12:06,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 23:12:06,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:12:06,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:12:06,320 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:12:06,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-15 23:12:06,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-15 23:12:06,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:12:06,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 23:12:06,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:12:06,477 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:12:06,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:12:06,631 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:12:06,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013868128] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:12:06,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:12:06,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-02-15 23:12:06,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392617465] [2023-02-15 23:12:06,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:12:06,633 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-02-15 23:12:06,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:12:06,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1574, now seen corresponding path program 4 times [2023-02-15 23:12:06,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:12:06,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327130054] [2023-02-15 23:12:06,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:12:06,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:12:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:12:06,638 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:12:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:12:06,641 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:12:06,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:12:06,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-15 23:12:06,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-02-15 23:12:06,667 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. cyclomatic complexity: 3 Second operand has 25 states, 24 states have (on average 2.0) internal successors, (48), 25 states have internal predecessors, (48), 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) [2023-02-15 23:12:06,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:12:06,729 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2023-02-15 23:12:06,730 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 50 transitions. [2023-02-15 23:12:06,733 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 23:12:06,735 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 49 states and 50 transitions. [2023-02-15 23:12:06,736 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-02-15 23:12:06,736 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-02-15 23:12:06,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 50 transitions. [2023-02-15 23:12:06,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 23:12:06,736 INFO L218 hiAutomatonCegarLoop]: Abstraction has 49 states and 50 transitions. [2023-02-15 23:12:06,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 50 transitions. [2023-02-15 23:12:06,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-02-15 23:12:06,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 48 states have internal predecessors, (50), 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) [2023-02-15 23:12:06,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2023-02-15 23:12:06,741 INFO L240 hiAutomatonCegarLoop]: Abstraction has 49 states and 50 transitions. [2023-02-15 23:12:06,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-15 23:12:06,743 INFO L428 stractBuchiCegarLoop]: Abstraction has 49 states and 50 transitions. [2023-02-15 23:12:06,743 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-02-15 23:12:06,743 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 49 states and 50 transitions. [2023-02-15 23:12:06,745 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 23:12:06,746 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:12:06,746 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:12:06,747 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [22, 22, 1, 1, 1] [2023-02-15 23:12:06,747 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-15 23:12:06,747 INFO L748 eck$LassoCheckResult]: Stem: 502#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 503#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~post0#1, main_~i~0#1, main_#t~mem3#1, main_#t~mem2#1, main_~#a~0#1.base, main_~#a~0#1.offset;call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(4192);main_~i~0#1 := 0; 504#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 505#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 506#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 500#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 501#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 546#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 545#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 544#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 543#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 542#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 541#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 540#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 539#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 538#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 537#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 536#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 535#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 534#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 533#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 532#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 531#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 530#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 529#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 528#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 527#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 526#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 525#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 524#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 523#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 522#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 521#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 520#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 519#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 518#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 517#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 516#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 515#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 514#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 513#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 512#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 511#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 510#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 509#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 508#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 507#L13-3 assume !(main_~i~0#1 < 1048); 498#L17-2 [2023-02-15 23:12:06,747 INFO L750 eck$LassoCheckResult]: Loop: 498#L17-2 call main_#t~mem2#1 := read~int(main_~#a~0#1.base, 12 + main_~#a~0#1.offset, 4); 499#L17 assume !!(main_#t~mem2#1 >= 0);havoc main_#t~mem2#1;call main_#t~mem3#1 := read~int(main_~#a~0#1.base, 12 + main_~#a~0#1.offset, 4);call write~int(main_#t~mem3#1 - 1, main_~#a~0#1.base, 12 + main_~#a~0#1.offset, 4);havoc main_#t~mem3#1; 498#L17-2 [2023-02-15 23:12:06,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:12:06,748 INFO L85 PathProgramCache]: Analyzing trace with hash -111832455, now seen corresponding path program 4 times [2023-02-15 23:12:06,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:12:06,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431313477] [2023-02-15 23:12:06,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:12:06,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:12:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:12:07,239 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:12:07,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:12:07,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431313477] [2023-02-15 23:12:07,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431313477] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:12:07,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3430039] [2023-02-15 23:12:07,239 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 23:12:07,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:12:07,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:12:07,241 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:12:07,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-15 23:12:07,385 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 23:12:07,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:12:07,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-15 23:12:07,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:12:07,447 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:12:07,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:12:08,047 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:12:08,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3430039] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:12:08,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:12:08,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-02-15 23:12:08,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197015915] [2023-02-15 23:12:08,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:12:08,051 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-02-15 23:12:08,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:12:08,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1574, now seen corresponding path program 5 times [2023-02-15 23:12:08,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:12:08,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131988428] [2023-02-15 23:12:08,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:12:08,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:12:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:12:08,057 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:12:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:12:08,062 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:12:08,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:12:08,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-02-15 23:12:08,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-02-15 23:12:08,087 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. cyclomatic complexity: 3 Second operand has 49 states, 48 states have (on average 2.0) internal successors, (96), 49 states have internal predecessors, (96), 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) [2023-02-15 23:12:08,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:12:08,213 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2023-02-15 23:12:08,213 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 98 transitions. [2023-02-15 23:12:08,216 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 23:12:08,218 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 97 states and 98 transitions. [2023-02-15 23:12:08,219 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-02-15 23:12:08,219 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-02-15 23:12:08,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 98 transitions. [2023-02-15 23:12:08,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 23:12:08,220 INFO L218 hiAutomatonCegarLoop]: Abstraction has 97 states and 98 transitions. [2023-02-15 23:12:08,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 98 transitions. [2023-02-15 23:12:08,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-02-15 23:12:08,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 97 states have (on average 1.0103092783505154) internal successors, (98), 96 states have internal predecessors, (98), 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) [2023-02-15 23:12:08,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2023-02-15 23:12:08,228 INFO L240 hiAutomatonCegarLoop]: Abstraction has 97 states and 98 transitions. [2023-02-15 23:12:08,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-02-15 23:12:08,229 INFO L428 stractBuchiCegarLoop]: Abstraction has 97 states and 98 transitions. [2023-02-15 23:12:08,229 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-02-15 23:12:08,229 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 97 states and 98 transitions. [2023-02-15 23:12:08,231 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 23:12:08,232 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:12:08,232 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:12:08,233 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [46, 46, 1, 1, 1] [2023-02-15 23:12:08,234 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-15 23:12:08,235 INFO L748 eck$LassoCheckResult]: Stem: 976#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 977#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~post0#1, main_~i~0#1, main_#t~mem3#1, main_#t~mem2#1, main_~#a~0#1.base, main_~#a~0#1.offset;call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(4192);main_~i~0#1 := 0; 978#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 979#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 980#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 974#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 975#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1068#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1067#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1066#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1065#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1064#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1063#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1062#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1061#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1060#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1059#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1058#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1057#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1056#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1055#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1054#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1053#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1052#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1051#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1050#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1049#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1048#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1047#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1046#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1045#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1044#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1043#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1042#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1041#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1040#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1039#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1038#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1037#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1036#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1035#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1034#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1033#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1032#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1031#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1030#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1029#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1028#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1027#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1026#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1025#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1024#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1023#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1022#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1021#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1020#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1019#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1018#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1017#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1016#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1015#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1014#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1013#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1012#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1011#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1010#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1009#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1008#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1007#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1006#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1005#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1004#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1003#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1002#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1001#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1000#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 999#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 998#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 997#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 996#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 995#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 994#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 993#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 992#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 991#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 990#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 989#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 988#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 987#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 986#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 985#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 984#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 983#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 982#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 981#L13-3 assume !(main_~i~0#1 < 1048); 972#L17-2 [2023-02-15 23:12:08,237 INFO L750 eck$LassoCheckResult]: Loop: 972#L17-2 call main_#t~mem2#1 := read~int(main_~#a~0#1.base, 12 + main_~#a~0#1.offset, 4); 973#L17 assume !!(main_#t~mem2#1 >= 0);havoc main_#t~mem2#1;call main_#t~mem3#1 := read~int(main_~#a~0#1.base, 12 + main_~#a~0#1.offset, 4);call write~int(main_#t~mem3#1 - 1, main_~#a~0#1.base, 12 + main_~#a~0#1.offset, 4);havoc main_#t~mem3#1; 972#L17-2 [2023-02-15 23:12:08,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:12:08,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1497227703, now seen corresponding path program 5 times [2023-02-15 23:12:08,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:12:08,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941123331] [2023-02-15 23:12:08,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:12:08,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:12:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:12:09,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:12:09,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:12:09,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941123331] [2023-02-15 23:12:09,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941123331] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:12:09,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117697034] [2023-02-15 23:12:09,585 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 23:12:09,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:12:09,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:12:09,588 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:12:09,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-15 23:12:26,521 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2023-02-15 23:12:26,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:12:26,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-15 23:12:26,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:12:26,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:12:26,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:12:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:12:28,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117697034] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:12:28,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:12:28,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 96 [2023-02-15 23:12:28,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835082661] [2023-02-15 23:12:28,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:12:28,722 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-02-15 23:12:28,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:12:28,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1574, now seen corresponding path program 6 times [2023-02-15 23:12:28,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:12:28,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346971793] [2023-02-15 23:12:28,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:12:28,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:12:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:12:28,726 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:12:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:12:28,729 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:12:28,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:12:28,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-02-15 23:12:28,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2023-02-15 23:12:28,761 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. cyclomatic complexity: 3 Second operand has 97 states, 96 states have (on average 2.0) internal successors, (192), 97 states have internal predecessors, (192), 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) [2023-02-15 23:12:28,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:12:28,973 INFO L93 Difference]: Finished difference Result 193 states and 194 transitions. [2023-02-15 23:12:28,974 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 193 states and 194 transitions. [2023-02-15 23:12:28,975 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 23:12:28,976 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 193 states to 193 states and 194 transitions. [2023-02-15 23:12:28,976 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-02-15 23:12:28,976 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-02-15 23:12:28,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 193 states and 194 transitions. [2023-02-15 23:12:28,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 23:12:28,977 INFO L218 hiAutomatonCegarLoop]: Abstraction has 193 states and 194 transitions. [2023-02-15 23:12:28,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states and 194 transitions. [2023-02-15 23:12:28,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2023-02-15 23:12:28,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 193 states have (on average 1.005181347150259) internal successors, (194), 192 states have internal predecessors, (194), 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) [2023-02-15 23:12:28,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2023-02-15 23:12:28,982 INFO L240 hiAutomatonCegarLoop]: Abstraction has 193 states and 194 transitions. [2023-02-15 23:12:28,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-02-15 23:12:28,983 INFO L428 stractBuchiCegarLoop]: Abstraction has 193 states and 194 transitions. [2023-02-15 23:12:28,983 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-02-15 23:12:28,983 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 193 states and 194 transitions. [2023-02-15 23:12:28,984 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 23:12:28,984 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:12:28,984 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:12:28,989 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [94, 94, 1, 1, 1] [2023-02-15 23:12:28,989 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-15 23:12:28,989 INFO L748 eck$LassoCheckResult]: Stem: 1930#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 1931#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~post0#1, main_~i~0#1, main_#t~mem3#1, main_#t~mem2#1, main_~#a~0#1.base, main_~#a~0#1.offset;call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(4192);main_~i~0#1 := 0; 1932#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1933#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1934#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1928#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1929#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2118#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2117#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2116#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2115#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2114#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2113#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2112#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2111#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2110#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2109#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2108#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2107#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2106#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2105#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2104#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2103#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2102#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2101#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2100#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2099#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2098#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2097#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2096#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2095#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2094#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2093#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2092#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2091#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2090#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2089#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2088#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2087#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2086#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2085#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2084#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2083#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2082#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2081#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2080#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2079#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2078#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2077#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2076#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2075#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2074#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2073#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2072#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2071#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2070#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2069#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2068#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2067#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2066#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2065#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2064#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2063#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2062#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2061#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2060#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2059#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2058#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2057#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2056#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2055#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2054#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2053#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2052#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2051#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2050#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2049#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2048#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2047#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2046#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2045#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2044#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2043#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2042#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2041#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2040#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2039#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2038#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2037#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2036#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2035#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2034#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2033#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2032#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2031#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2030#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2029#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2028#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2027#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2026#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2025#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2024#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2023#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2022#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2021#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2020#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2019#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2018#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2017#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2016#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2015#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2014#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2013#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2012#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2011#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2010#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2009#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2008#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2007#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2006#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2005#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2004#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2003#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2002#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 2001#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 2000#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1999#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1998#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1997#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1996#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1995#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1994#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1993#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1992#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1991#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1990#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1989#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1988#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1987#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1986#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1985#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1984#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1983#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1982#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1981#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1980#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1979#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1978#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1977#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1976#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1975#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1974#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1973#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1972#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1971#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1970#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1969#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1968#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1967#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1966#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1965#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1964#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1963#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1962#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1961#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1960#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1959#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1958#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1957#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1956#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1955#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1954#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1953#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1952#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1951#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1950#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1949#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1948#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1947#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1946#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1945#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1944#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1943#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1942#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1941#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1940#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1939#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1938#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1937#L13-3 assume !!(main_~i~0#1 < 1048);call write~int(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1936#L13-2 main_#t~post0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post0#1;havoc main_#t~post0#1; 1935#L13-3 assume !(main_~i~0#1 < 1048); 1926#L17-2 [2023-02-15 23:12:28,990 INFO L750 eck$LassoCheckResult]: Loop: 1926#L17-2 call main_#t~mem2#1 := read~int(main_~#a~0#1.base, 12 + main_~#a~0#1.offset, 4); 1927#L17 assume !!(main_#t~mem2#1 >= 0);havoc main_#t~mem2#1;call main_#t~mem3#1 := read~int(main_~#a~0#1.base, 12 + main_~#a~0#1.offset, 4);call write~int(main_#t~mem3#1 - 1, main_~#a~0#1.base, 12 + main_~#a~0#1.offset, 4);havoc main_#t~mem3#1; 1926#L17-2 [2023-02-15 23:12:28,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:12:28,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2115802601, now seen corresponding path program 6 times [2023-02-15 23:12:28,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:12:28,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128253601] [2023-02-15 23:12:28,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:12:28,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:12:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:12:33,567 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:12:33,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:12:33,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128253601] [2023-02-15 23:12:33,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128253601] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:12:33,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057183981] [2023-02-15 23:12:33,568 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 23:12:33,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:12:33,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:12:33,572 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:12:33,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process