./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/locks/test_locks_5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/locks/test_locks_5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f68d39859f114df07f2619f37e3285dcdf00194e62a42552d2c67e537c13685 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 23:12:16,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 23:12:16,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 23:12:16,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 23:12:16,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 23:12:16,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 23:12:16,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 23:12:16,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 23:12:16,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 23:12:16,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 23:12:16,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 23:12:16,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 23:12:16,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 23:12:16,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 23:12:16,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 23:12:17,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 23:12:17,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 23:12:17,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 23:12:17,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 23:12:17,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 23:12:17,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 23:12:17,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 23:12:17,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 23:12:17,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 23:12:17,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 23:12:17,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 23:12:17,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 23:12:17,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 23:12:17,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 23:12:17,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 23:12:17,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 23:12:17,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 23:12:17,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 23:12:17,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 23:12:17,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 23:12:17,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 23:12:17,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 23:12:17,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 23:12:17,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 23:12:17,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 23:12:17,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 23:12:17,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-14 23:12:17,063 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 23:12:17,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 23:12:17,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 23:12:17,063 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 23:12:17,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 23:12:17,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 23:12:17,065 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 23:12:17,065 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 23:12:17,065 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 23:12:17,065 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 23:12:17,066 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 23:12:17,066 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 23:12:17,066 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 23:12:17,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 23:12:17,066 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 23:12:17,067 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 23:12:17,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 23:12:17,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 23:12:17,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 23:12:17,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 23:12:17,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 23:12:17,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 23:12:17,068 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 23:12:17,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 23:12:17,069 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 23:12:17,069 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 23:12:17,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 23:12:17,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 23:12:17,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 23:12:17,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 23:12:17,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 23:12:17,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 23:12:17,071 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 23:12:17,071 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f68d39859f114df07f2619f37e3285dcdf00194e62a42552d2c67e537c13685 [2021-12-14 23:12:17,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 23:12:17,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 23:12:17,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 23:12:17,284 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 23:12:17,285 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 23:12:17,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_5.c [2021-12-14 23:12:17,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db76d6a34/60489ff23c9c4afc81c1e6ee4e01a32d/FLAGfcf46a5f2 [2021-12-14 23:12:17,668 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 23:12:17,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_5.c [2021-12-14 23:12:17,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db76d6a34/60489ff23c9c4afc81c1e6ee4e01a32d/FLAGfcf46a5f2 [2021-12-14 23:12:18,084 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db76d6a34/60489ff23c9c4afc81c1e6ee4e01a32d [2021-12-14 23:12:18,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 23:12:18,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 23:12:18,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 23:12:18,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 23:12:18,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 23:12:18,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:12:18" (1/1) ... [2021-12-14 23:12:18,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21985fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:18, skipping insertion in model container [2021-12-14 23:12:18,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:12:18" (1/1) ... [2021-12-14 23:12:18,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 23:12:18,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 23:12:18,270 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_5.c[2207,2220] [2021-12-14 23:12:18,271 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:12:18,278 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 23:12:18,301 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_5.c[2207,2220] [2021-12-14 23:12:18,304 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:12:18,315 INFO L208 MainTranslator]: Completed translation [2021-12-14 23:12:18,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:18 WrapperNode [2021-12-14 23:12:18,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 23:12:18,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 23:12:18,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 23:12:18,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 23:12:18,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:18" (1/1) ... [2021-12-14 23:12:18,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:18" (1/1) ... [2021-12-14 23:12:18,347 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2021-12-14 23:12:18,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 23:12:18,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 23:12:18,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 23:12:18,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 23:12:18,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:18" (1/1) ... [2021-12-14 23:12:18,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:18" (1/1) ... [2021-12-14 23:12:18,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:18" (1/1) ... [2021-12-14 23:12:18,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:18" (1/1) ... [2021-12-14 23:12:18,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:18" (1/1) ... [2021-12-14 23:12:18,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:18" (1/1) ... [2021-12-14 23:12:18,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:18" (1/1) ... [2021-12-14 23:12:18,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 23:12:18,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 23:12:18,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 23:12:18,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 23:12:18,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:18" (1/1) ... [2021-12-14 23:12:18,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:12:18,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:12:18,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:12:18,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-14 23:12:18,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 23:12:18,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 23:12:18,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 23:12:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 23:12:18,518 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 23:12:18,519 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 23:12:18,651 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 23:12:18,656 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 23:12:18,656 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 23:12:18,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:12:18 BoogieIcfgContainer [2021-12-14 23:12:18,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 23:12:18,667 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 23:12:18,667 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 23:12:18,669 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 23:12:18,670 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:12:18,670 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 11:12:18" (1/3) ... [2021-12-14 23:12:18,671 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47e9fd7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:12:18, skipping insertion in model container [2021-12-14 23:12:18,671 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:12:18,671 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:12:18" (2/3) ... [2021-12-14 23:12:18,672 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47e9fd7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:12:18, skipping insertion in model container [2021-12-14 23:12:18,672 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:12:18,672 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:12:18" (3/3) ... [2021-12-14 23:12:18,673 INFO L388 chiAutomizerObserver]: Analyzing ICFG test_locks_5.c [2021-12-14 23:12:18,725 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 23:12:18,736 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 23:12:18,736 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 23:12:18,736 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 23:12:18,736 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 23:12:18,736 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 23:12:18,736 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 23:12:18,737 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 23:12:18,748 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:12:18,759 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2021-12-14 23:12:18,761 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:12:18,761 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:12:18,765 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:12:18,765 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:12:18,765 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 23:12:18,765 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:12:18,769 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2021-12-14 23:12:18,769 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:12:18,769 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:12:18,770 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:12:18,770 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:12:18,775 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 14#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_~cond~0#1; 8#L85-1true [2021-12-14 23:12:18,776 INFO L793 eck$LassoCheckResult]: Loop: 8#L85-1true assume !false;main_~cond~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1; 23#L28true assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0; 9#L43true assume 0 != main_~p1~0#1;main_~lk1~0#1 := 1; 10#L43-2true assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 19#L47-1true assume !(0 != main_~p3~0#1); 17#L51-1true assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 18#L55-1true assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 21#L59-1true assume !(0 != main_~p1~0#1); 11#L65-1true assume !(0 != main_~p2~0#1); 20#L70-1true assume !(0 != main_~p3~0#1); 22#L75-1true assume !(0 != main_~p4~0#1); 24#L80-1true assume !(0 != main_~p5~0#1); 8#L85-1true [2021-12-14 23:12:18,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:18,783 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-14 23:12:18,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:18,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495169028] [2021-12-14 23:12:18,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:18,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:18,856 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:12:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:18,887 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:12:18,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:18,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2089480461, now seen corresponding path program 1 times [2021-12-14 23:12:18,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:18,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377219712] [2021-12-14 23:12:18,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:18,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:12:18,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:12:18,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:12:18,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377219712] [2021-12-14 23:12:18,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377219712] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:12:18,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:12:18,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:12:18,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802038430] [2021-12-14 23:12:18,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:12:18,994 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:12:18,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:12:19,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:12:19,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:12:19,018 INFO L87 Difference]: Start difference. First operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 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 4.0) internal successors, (12), 3 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) [2021-12-14 23:12:19,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:12:19,038 INFO L93 Difference]: Finished difference Result 45 states and 70 transitions. [2021-12-14 23:12:19,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:12:19,042 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 70 transitions. [2021-12-14 23:12:19,043 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 33 [2021-12-14 23:12:19,045 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 35 states and 53 transitions. [2021-12-14 23:12:19,046 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2021-12-14 23:12:19,046 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-12-14 23:12:19,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 53 transitions. [2021-12-14 23:12:19,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:12:19,047 INFO L681 BuchiCegarLoop]: Abstraction has 35 states and 53 transitions. [2021-12-14 23:12:19,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 53 transitions. [2021-12-14 23:12:19,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-12-14 23:12:19,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:12:19,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 53 transitions. [2021-12-14 23:12:19,070 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 53 transitions. [2021-12-14 23:12:19,071 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 53 transitions. [2021-12-14 23:12:19,071 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-14 23:12:19,071 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 53 transitions. [2021-12-14 23:12:19,075 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 33 [2021-12-14 23:12:19,075 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:12:19,075 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:12:19,076 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:12:19,076 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:12:19,076 INFO L791 eck$LassoCheckResult]: Stem: 80#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 81#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_~cond~0#1; 79#L85-1 [2021-12-14 23:12:19,076 INFO L793 eck$LassoCheckResult]: Loop: 79#L85-1 assume !false;main_~cond~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1; 84#L28 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0; 100#L43 assume !(0 != main_~p1~0#1); 87#L43-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 88#L47-1 assume !(0 != main_~p3~0#1); 93#L51-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 94#L55-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 95#L59-1 assume !(0 != main_~p1~0#1); 101#L65-1 assume !(0 != main_~p2~0#1); 111#L70-1 assume !(0 != main_~p3~0#1); 98#L75-1 assume !(0 != main_~p4~0#1); 92#L80-1 assume !(0 != main_~p5~0#1); 79#L85-1 [2021-12-14 23:12:19,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:19,078 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-12-14 23:12:19,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:19,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871901608] [2021-12-14 23:12:19,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:19,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:19,091 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:12:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:19,095 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:12:19,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:19,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1812459825, now seen corresponding path program 1 times [2021-12-14 23:12:19,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:19,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69444310] [2021-12-14 23:12:19,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:19,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:12:19,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:12:19,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:12:19,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69444310] [2021-12-14 23:12:19,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69444310] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:12:19,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:12:19,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:12:19,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304564264] [2021-12-14 23:12:19,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:12:19,113 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:12:19,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:12:19,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:12:19,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:12:19,113 INFO L87 Difference]: Start difference. First operand 35 states and 53 transitions. cyclomatic complexity: 20 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2021-12-14 23:12:19,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:12:19,123 INFO L93 Difference]: Finished difference Result 66 states and 98 transitions. [2021-12-14 23:12:19,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:12:19,123 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 98 transitions. [2021-12-14 23:12:19,125 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 64 [2021-12-14 23:12:19,125 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 66 states and 98 transitions. [2021-12-14 23:12:19,125 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 66 [2021-12-14 23:12:19,126 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 66 [2021-12-14 23:12:19,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 98 transitions. [2021-12-14 23:12:19,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:12:19,126 INFO L681 BuchiCegarLoop]: Abstraction has 66 states and 98 transitions. [2021-12-14 23:12:19,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 98 transitions. [2021-12-14 23:12:19,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-12-14 23:12:19,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 66 states have (on average 1.4848484848484849) internal successors, (98), 65 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) [2021-12-14 23:12:19,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 98 transitions. [2021-12-14 23:12:19,130 INFO L704 BuchiCegarLoop]: Abstraction has 66 states and 98 transitions. [2021-12-14 23:12:19,130 INFO L587 BuchiCegarLoop]: Abstraction has 66 states and 98 transitions. [2021-12-14 23:12:19,130 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-14 23:12:19,130 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 98 transitions. [2021-12-14 23:12:19,131 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 64 [2021-12-14 23:12:19,131 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:12:19,131 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:12:19,131 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:12:19,131 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:12:19,132 INFO L791 eck$LassoCheckResult]: Stem: 189#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 190#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_~cond~0#1; 200#L85-1 [2021-12-14 23:12:19,132 INFO L793 eck$LassoCheckResult]: Loop: 200#L85-1 assume !false;main_~cond~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1; 224#L28 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0; 222#L43 assume !(0 != main_~p1~0#1); 219#L43-2 assume !(0 != main_~p2~0#1); 217#L47-1 assume !(0 != main_~p3~0#1); 215#L51-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 214#L55-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 212#L59-1 assume !(0 != main_~p1~0#1); 213#L65-1 assume !(0 != main_~p2~0#1); 235#L70-1 assume !(0 != main_~p3~0#1); 231#L75-1 assume !(0 != main_~p4~0#1); 228#L80-1 assume !(0 != main_~p5~0#1); 200#L85-1 [2021-12-14 23:12:19,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:19,132 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-12-14 23:12:19,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:19,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797763212] [2021-12-14 23:12:19,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:19,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:19,136 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:12:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:19,140 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:12:19,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:19,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1802449101, now seen corresponding path program 1 times [2021-12-14 23:12:19,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:19,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761172788] [2021-12-14 23:12:19,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:19,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:12:19,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:12:19,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:12:19,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761172788] [2021-12-14 23:12:19,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761172788] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:12:19,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:12:19,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:12:19,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862533478] [2021-12-14 23:12:19,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:12:19,155 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:12:19,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:12:19,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:12:19,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:12:19,156 INFO L87 Difference]: Start difference. First operand 66 states and 98 transitions. cyclomatic complexity: 36 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2021-12-14 23:12:19,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:12:19,166 INFO L93 Difference]: Finished difference Result 126 states and 182 transitions. [2021-12-14 23:12:19,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:12:19,166 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 182 transitions. [2021-12-14 23:12:19,168 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 124 [2021-12-14 23:12:19,169 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 126 states and 182 transitions. [2021-12-14 23:12:19,169 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 126 [2021-12-14 23:12:19,169 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 126 [2021-12-14 23:12:19,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 182 transitions. [2021-12-14 23:12:19,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:12:19,170 INFO L681 BuchiCegarLoop]: Abstraction has 126 states and 182 transitions. [2021-12-14 23:12:19,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states and 182 transitions. [2021-12-14 23:12:19,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-12-14 23:12:19,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 126 states have (on average 1.4444444444444444) internal successors, (182), 125 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:12:19,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 182 transitions. [2021-12-14 23:12:19,176 INFO L704 BuchiCegarLoop]: Abstraction has 126 states and 182 transitions. [2021-12-14 23:12:19,176 INFO L587 BuchiCegarLoop]: Abstraction has 126 states and 182 transitions. [2021-12-14 23:12:19,176 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-14 23:12:19,176 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 182 transitions. [2021-12-14 23:12:19,177 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 124 [2021-12-14 23:12:19,177 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:12:19,177 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:12:19,178 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:12:19,178 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:12:19,178 INFO L791 eck$LassoCheckResult]: Stem: 385#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 386#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_~cond~0#1; 400#L85-1 [2021-12-14 23:12:19,178 INFO L793 eck$LassoCheckResult]: Loop: 400#L85-1 assume !false;main_~cond~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1; 435#L28 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0; 431#L43 assume !(0 != main_~p1~0#1); 428#L43-2 assume !(0 != main_~p2~0#1); 426#L47-1 assume !(0 != main_~p3~0#1); 425#L51-1 assume !(0 != main_~p4~0#1); 421#L55-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 422#L59-1 assume !(0 != main_~p1~0#1); 447#L65-1 assume !(0 != main_~p2~0#1); 445#L70-1 assume !(0 != main_~p3~0#1); 442#L75-1 assume !(0 != main_~p4~0#1); 439#L80-1 assume !(0 != main_~p5~0#1); 400#L85-1 [2021-12-14 23:12:19,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:19,178 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-12-14 23:12:19,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:19,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379414776] [2021-12-14 23:12:19,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:19,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:19,182 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:12:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:19,185 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:12:19,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:19,185 INFO L85 PathProgramCache]: Analyzing trace with hash -27441739, now seen corresponding path program 1 times [2021-12-14 23:12:19,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:19,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771163760] [2021-12-14 23:12:19,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:19,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:12:19,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:12:19,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:12:19,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771163760] [2021-12-14 23:12:19,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771163760] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:12:19,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:12:19,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 23:12:19,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008703187] [2021-12-14 23:12:19,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:12:19,197 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:12:19,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:12:19,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:12:19,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:12:19,198 INFO L87 Difference]: Start difference. First operand 126 states and 182 transitions. cyclomatic complexity: 64 Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2021-12-14 23:12:19,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:12:19,208 INFO L93 Difference]: Finished difference Result 242 states and 338 transitions. [2021-12-14 23:12:19,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:12:19,209 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 242 states and 338 transitions. [2021-12-14 23:12:19,211 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 240 [2021-12-14 23:12:19,212 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 242 states to 242 states and 338 transitions. [2021-12-14 23:12:19,212 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 242 [2021-12-14 23:12:19,213 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 242 [2021-12-14 23:12:19,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 242 states and 338 transitions. [2021-12-14 23:12:19,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:12:19,214 INFO L681 BuchiCegarLoop]: Abstraction has 242 states and 338 transitions. [2021-12-14 23:12:19,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states and 338 transitions. [2021-12-14 23:12:19,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-12-14 23:12:19,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 242 states have (on average 1.396694214876033) internal successors, (338), 241 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:12:19,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 338 transitions. [2021-12-14 23:12:19,235 INFO L704 BuchiCegarLoop]: Abstraction has 242 states and 338 transitions. [2021-12-14 23:12:19,235 INFO L587 BuchiCegarLoop]: Abstraction has 242 states and 338 transitions. [2021-12-14 23:12:19,235 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-14 23:12:19,235 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 242 states and 338 transitions. [2021-12-14 23:12:19,236 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 240 [2021-12-14 23:12:19,236 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:12:19,237 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:12:19,237 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:12:19,237 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:12:19,237 INFO L791 eck$LassoCheckResult]: Stem: 759#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 760#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_~cond~0#1; 773#L85-1 [2021-12-14 23:12:19,237 INFO L793 eck$LassoCheckResult]: Loop: 773#L85-1 assume !false;main_~cond~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1; 836#L28 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0; 833#L43 assume !(0 != main_~p1~0#1); 829#L43-2 assume !(0 != main_~p2~0#1); 826#L47-1 assume !(0 != main_~p3~0#1); 820#L51-1 assume !(0 != main_~p4~0#1); 795#L55-1 assume !(0 != main_~p5~0#1); 796#L59-1 assume !(0 != main_~p1~0#1); 853#L65-1 assume !(0 != main_~p2~0#1); 842#L70-1 assume !(0 != main_~p3~0#1); 821#L75-1 assume !(0 != main_~p4~0#1); 823#L80-1 assume !(0 != main_~p5~0#1); 773#L85-1 [2021-12-14 23:12:19,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:19,237 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-12-14 23:12:19,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:19,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455752329] [2021-12-14 23:12:19,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:19,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:19,241 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:12:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:19,244 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:12:19,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:19,244 INFO L85 PathProgramCache]: Analyzing trace with hash 29816563, now seen corresponding path program 1 times [2021-12-14 23:12:19,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:19,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847012113] [2021-12-14 23:12:19,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:19,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:19,247 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:12:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:19,251 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:12:19,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:12:19,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1243965365, now seen corresponding path program 1 times [2021-12-14 23:12:19,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:12:19,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164189580] [2021-12-14 23:12:19,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:12:19,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:12:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:19,255 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:12:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:12:19,260 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:12:19,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.12 11:12:19 BoogieIcfgContainer [2021-12-14 23:12:19,424 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-14 23:12:19,425 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 23:12:19,425 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 23:12:19,425 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 23:12:19,425 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:12:18" (3/4) ... [2021-12-14 23:12:19,426 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-14 23:12:19,448 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 23:12:19,448 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 23:12:19,449 INFO L158 Benchmark]: Toolchain (without parser) took 1361.44ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 60.5MB in the beginning and 78.7MB in the end (delta: -18.2MB). Peak memory consumption was 880.1kB. Max. memory is 16.1GB. [2021-12-14 23:12:19,449 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 90.2MB. Free memory was 48.7MB in the beginning and 48.7MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:12:19,449 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.02ms. Allocated memory is still 90.2MB. Free memory was 60.3MB in the beginning and 67.9MB in the end (delta: -7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 23:12:19,449 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.69ms. Allocated memory is still 90.2MB. Free memory was 67.9MB in the beginning and 66.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:12:19,450 INFO L158 Benchmark]: Boogie Preprocessor took 33.08ms. Allocated memory is still 90.2MB. Free memory was 66.3MB in the beginning and 65.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:12:19,450 INFO L158 Benchmark]: RCFGBuilder took 284.56ms. Allocated memory is still 90.2MB. Free memory was 65.3MB in the beginning and 55.8MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 23:12:19,450 INFO L158 Benchmark]: BuchiAutomizer took 757.35ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 55.8MB in the beginning and 80.7MB in the end (delta: -24.9MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2021-12-14 23:12:19,451 INFO L158 Benchmark]: Witness Printer took 23.71ms. Allocated memory is still 109.1MB. Free memory was 80.7MB in the beginning and 78.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:12:19,452 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 90.2MB. Free memory was 48.7MB in the beginning and 48.7MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 227.02ms. Allocated memory is still 90.2MB. Free memory was 60.3MB in the beginning and 67.9MB in the end (delta: -7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.69ms. Allocated memory is still 90.2MB. Free memory was 67.9MB in the beginning and 66.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.08ms. Allocated memory is still 90.2MB. Free memory was 66.3MB in the beginning and 65.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 284.56ms. Allocated memory is still 90.2MB. Free memory was 65.3MB in the beginning and 55.8MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 757.35ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 55.8MB in the beginning and 80.7MB in the end (delta: -24.9MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. * Witness Printer took 23.71ms. Allocated memory is still 109.1MB. Free memory was 80.7MB in the beginning and 78.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (4 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.4 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 242 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.7s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 242 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 89 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 89 mSDsluCounter, 277 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 100 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 177 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI4 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 26]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@9393789=0, p3=0, lk3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2b560801=0, lk5=0, p1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4a7d38ad=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6b1631ab=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@59bf0eba=0, NULL=1, \result=0, cond=4, p5=0, p4=0, lk2=0, NULL=0, lk4=0, p2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@51f027e3=4, lk1=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 26]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L24] int cond; Loop: [L26] COND TRUE 1 [L27] cond = __VERIFIER_nondet_int() [L28] COND FALSE !(cond == 0) [L31] lk1 = 0 [L33] lk2 = 0 [L35] lk3 = 0 [L37] lk4 = 0 [L39] lk5 = 0 [L43] COND FALSE !(p1 != 0) [L47] COND FALSE !(p2 != 0) [L51] COND FALSE !(p3 != 0) [L55] COND FALSE !(p4 != 0) [L59] COND FALSE !(p5 != 0) [L65] COND FALSE !(p1 != 0) [L70] COND FALSE !(p2 != 0) [L75] COND FALSE !(p3 != 0) [L80] COND FALSE !(p4 != 0) [L85] COND FALSE !(p5 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-14 23:12:19,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)