./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 8d31f386 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 d28fd50bd3f7e49bee026aec860ad9015a4fdfba ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 19:03:51,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 19:03:51,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 19:03:51,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 19:03:51,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 19:03:51,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 19:03:51,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 19:03:51,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 19:03:51,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 19:03:51,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 19:03:51,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 19:03:51,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 19:03:51,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 19:03:51,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 19:03:51,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 19:03:51,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 19:03:51,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 19:03:51,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 19:03:51,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 19:03:51,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 19:03:51,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 19:03:51,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 19:03:51,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 19:03:51,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 19:03:51,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 19:03:51,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 19:03:51,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 19:03:51,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 19:03:51,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 19:03:51,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 19:03:51,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 19:03:51,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 19:03:51,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 19:03:51,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 19:03:51,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 19:03:51,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 19:03:51,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 19:03:51,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 19:03:51,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 19:03:51,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 19:03:51,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 19:03:51,371 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 19:03:51,388 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 19:03:51,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 19:03:51,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 19:03:51,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 19:03:51,390 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 19:03:51,391 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 19:03:51,391 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 19:03:51,391 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 19:03:51,391 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 19:03:51,391 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 19:03:51,392 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 19:03:51,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 19:03:51,392 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 19:03:51,392 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 19:03:51,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 19:03:51,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 19:03:51,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 19:03:51,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 19:03:51,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 19:03:51,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 19:03:51,393 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 19:03:51,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 19:03:51,394 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 19:03:51,394 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 19:03:51,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 19:03:51,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 19:03:51,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 19:03:51,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 19:03:51,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 19:03:51,395 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 19:03:51,396 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 19:03:51,396 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d28fd50bd3f7e49bee026aec860ad9015a4fdfba [2021-07-06 19:03:51,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 19:03:51,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 19:03:51,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 19:03:51,661 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 19:03:51,662 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 19:03:51,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_5.c [2021-07-06 19:03:51,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e09eaee4b/0bcb62794e1147fea5853290a550747e/FLAG6f0716fd5 [2021-07-06 19:03:52,064 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 19:03:52,065 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_5.c [2021-07-06 19:03:52,070 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e09eaee4b/0bcb62794e1147fea5853290a550747e/FLAG6f0716fd5 [2021-07-06 19:03:52,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e09eaee4b/0bcb62794e1147fea5853290a550747e [2021-07-06 19:03:52,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 19:03:52,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 19:03:52,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 19:03:52,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 19:03:52,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 19:03:52,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 07:03:52" (1/1) ... [2021-07-06 19:03:52,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@170332aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:03:52, skipping insertion in model container [2021-07-06 19:03:52,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 07:03:52" (1/1) ... [2021-07-06 19:03:52,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 19:03:52,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 19:03:52,195 WARN L224 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] [2021-07-06 19:03:52,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 19:03:52,201 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 19:03:52,214 WARN L224 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] [2021-07-06 19:03:52,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 19:03:52,254 INFO L208 MainTranslator]: Completed translation [2021-07-06 19:03:52,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:03:52 WrapperNode [2021-07-06 19:03:52,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 19:03:52,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 19:03:52,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 19:03:52,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 19:03:52,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:03:52" (1/1) ... [2021-07-06 19:03:52,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:03:52" (1/1) ... [2021-07-06 19:03:52,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 19:03:52,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 19:03:52,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 19:03:52,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 19:03:52,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:03:52" (1/1) ... [2021-07-06 19:03:52,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:03:52" (1/1) ... [2021-07-06 19:03:52,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:03:52" (1/1) ... [2021-07-06 19:03:52,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:03:52" (1/1) ... [2021-07-06 19:03:52,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:03:52" (1/1) ... [2021-07-06 19:03:52,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:03:52" (1/1) ... [2021-07-06 19:03:52,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:03:52" (1/1) ... [2021-07-06 19:03:52,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 19:03:52,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 19:03:52,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 19:03:52,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 19:03:52,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:03:52" (1/1) ... [2021-07-06 19:03:52,322 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 19:03:52,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 19:03:52,390 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) [2021-07-06 19:03:52,408 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 [2021-07-06 19:03:52,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 19:03:52,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 19:03:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 19:03:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 19:03:52,667 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 19:03:52,667 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-07-06 19:03:52,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 07:03:52 BoogieIcfgContainer [2021-07-06 19:03:52,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 19:03:52,669 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 19:03:52,669 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 19:03:52,671 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 19:03:52,671 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 19:03:52,671 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 07:03:52" (1/3) ... [2021-07-06 19:03:52,672 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60b02d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 07:03:52, skipping insertion in model container [2021-07-06 19:03:52,672 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 19:03:52,672 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:03:52" (2/3) ... [2021-07-06 19:03:52,673 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60b02d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 07:03:52, skipping insertion in model container [2021-07-06 19:03:52,673 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 19:03:52,673 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 07:03:52" (3/3) ... [2021-07-06 19:03:52,674 INFO L389 chiAutomizerObserver]: Analyzing ICFG test_locks_5.c [2021-07-06 19:03:52,715 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 19:03:52,715 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 19:03:52,715 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 19:03:52,715 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 19:03:52,715 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 19:03:52,716 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 19:03:52,716 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 19:03:52,716 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 19:03:52,729 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) [2021-07-06 19:03:52,741 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2021-07-06 19:03:52,741 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 19:03:52,741 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 19:03:52,745 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-07-06 19:03:52,746 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 19:03:52,746 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 19:03:52,746 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) [2021-07-06 19:03:52,750 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2021-07-06 19:03:52,750 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 19:03:52,750 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 19:03:52,751 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-07-06 19:03:52,751 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 19:03:52,756 INFO L791 eck$LassoCheckResult]: Stem: 17#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 14#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;havoc main_~cond~0; 13#L85-1true [2021-07-06 19:03:52,760 INFO L793 eck$LassoCheckResult]: Loop: 13#L85-1true assume !false;main_~cond~0 := main_#t~nondet12;havoc main_#t~nondet12; 8#L28true assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0; 19#L43true assume 0 != main_~p1~0;main_~lk1~0 := 1; 12#L43-2true assume 0 != main_~p2~0;main_~lk2~0 := 1; 26#L47-1true assume !(0 != main_~p3~0); 10#L51-1true assume 0 != main_~p4~0;main_~lk4~0 := 1; 20#L55-1true assume 0 != main_~p5~0;main_~lk5~0 := 1; 4#L59-1true assume !(0 != main_~p1~0); 18#L65-1true assume !(0 != main_~p2~0); 5#L70-1true assume !(0 != main_~p3~0); 15#L75-1true assume !(0 != main_~p4~0); 3#L80-1true assume !(0 != main_~p5~0); 13#L85-1true [2021-07-06 19:03:52,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:03:52,768 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-07-06 19:03:52,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:03:52,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216740452] [2021-07-06 19:03:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:03:52,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:03:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:03:52,848 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:03:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:03:52,872 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:03:52,884 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 19:03:52,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:03:52,887 INFO L82 PathProgramCache]: Analyzing trace with hash -2089480461, now seen corresponding path program 1 times [2021-07-06 19:03:52,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:03:52,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292413006] [2021-07-06 19:03:52,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:03:52,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:03:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 19:03:52,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:03:52,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 19:03:52,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:03:52,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 19:03:52,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:03:52,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 19:03:52,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 19:03:52,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 19:03:52,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292413006] [2021-07-06 19:03:52,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292413006] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 19:03:52,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 19:03:52,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 19:03:52,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691363854] [2021-07-06 19:03:52,943 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 19:03:52,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 19:03:52,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 19:03:52,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 19:03:52,959 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) [2021-07-06 19:03:52,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 19:03:52,993 INFO L93 Difference]: Finished difference Result 45 states and 70 transitions. [2021-07-06 19:03:52,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 19:03:52,995 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 70 transitions. [2021-07-06 19:03:52,999 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 33 [2021-07-06 19:03:53,002 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 35 states and 53 transitions. [2021-07-06 19:03:53,003 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2021-07-06 19:03:53,004 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-07-06 19:03:53,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 53 transitions. [2021-07-06 19:03:53,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 19:03:53,005 INFO L681 BuchiCegarLoop]: Abstraction has 35 states and 53 transitions. [2021-07-06 19:03:53,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 53 transitions. [2021-07-06 19:03:53,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-07-06 19:03:53,025 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) [2021-07-06 19:03:53,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 53 transitions. [2021-07-06 19:03:53,028 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 53 transitions. [2021-07-06 19:03:53,028 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 53 transitions. [2021-07-06 19:03:53,028 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 19:03:53,028 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 53 transitions. [2021-07-06 19:03:53,031 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 33 [2021-07-06 19:03:53,031 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 19:03:53,031 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 19:03:53,032 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-07-06 19:03:53,032 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 19:03:53,032 INFO L791 eck$LassoCheckResult]: Stem: 96#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 95#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;havoc main_~cond~0; 79#L85-1 [2021-07-06 19:03:53,032 INFO L793 eck$LassoCheckResult]: Loop: 79#L85-1 assume !false;main_~cond~0 := main_#t~nondet12;havoc main_#t~nondet12; 88#L28 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0; 89#L43 assume !(0 != main_~p1~0); 104#L43-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 100#L47-1 assume !(0 != main_~p3~0); 91#L51-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 92#L55-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 101#L59-1 assume !(0 != main_~p1~0); 102#L65-1 assume !(0 != main_~p2~0); 111#L70-1 assume !(0 != main_~p3~0); 109#L75-1 assume !(0 != main_~p4~0); 78#L80-1 assume !(0 != main_~p5~0); 79#L85-1 [2021-07-06 19:03:53,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:03:53,033 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-07-06 19:03:53,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:03:53,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692670107] [2021-07-06 19:03:53,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:03:53,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:03:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:03:53,052 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:03:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:03:53,069 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:03:53,073 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 19:03:53,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:03:53,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1812459825, now seen corresponding path program 1 times [2021-07-06 19:03:53,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:03:53,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220798778] [2021-07-06 19:03:53,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:03:53,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:03:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 19:03:53,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:03:53,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 19:03:53,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:03:53,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 19:03:53,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:03:53,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 19:03:53,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 19:03:53,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 19:03:53,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220798778] [2021-07-06 19:03:53,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220798778] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 19:03:53,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 19:03:53,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 19:03:53,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955017076] [2021-07-06 19:03:53,104 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 19:03:53,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 19:03:53,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 19:03:53,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 19:03:53,105 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) [2021-07-06 19:03:53,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 19:03:53,125 INFO L93 Difference]: Finished difference Result 66 states and 98 transitions. [2021-07-06 19:03:53,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 19:03:53,126 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 98 transitions. [2021-07-06 19:03:53,128 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 64 [2021-07-06 19:03:53,130 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 66 states and 98 transitions. [2021-07-06 19:03:53,130 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 66 [2021-07-06 19:03:53,131 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 66 [2021-07-06 19:03:53,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 98 transitions. [2021-07-06 19:03:53,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 19:03:53,134 INFO L681 BuchiCegarLoop]: Abstraction has 66 states and 98 transitions. [2021-07-06 19:03:53,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 98 transitions. [2021-07-06 19:03:53,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-07-06 19:03:53,140 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) [2021-07-06 19:03:53,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 98 transitions. [2021-07-06 19:03:53,142 INFO L704 BuchiCegarLoop]: Abstraction has 66 states and 98 transitions. [2021-07-06 19:03:53,142 INFO L587 BuchiCegarLoop]: Abstraction has 66 states and 98 transitions. [2021-07-06 19:03:53,142 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 19:03:53,142 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 98 transitions. [2021-07-06 19:03:53,144 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 64 [2021-07-06 19:03:53,145 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 19:03:53,145 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 19:03:53,145 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-07-06 19:03:53,146 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 19:03:53,146 INFO L791 eck$LassoCheckResult]: Stem: 206#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 203#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;havoc main_~cond~0; 204#L85-1 [2021-07-06 19:03:53,146 INFO L793 eck$LassoCheckResult]: Loop: 204#L85-1 assume !false;main_~cond~0 := main_#t~nondet12;havoc main_#t~nondet12; 229#L28 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0; 226#L43 assume !(0 != main_~p1~0); 224#L43-2 assume !(0 != main_~p2~0); 223#L47-1 assume !(0 != main_~p3~0); 199#L51-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 200#L55-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 219#L59-1 assume !(0 != main_~p1~0); 211#L65-1 assume !(0 != main_~p2~0); 190#L70-1 assume !(0 != main_~p3~0); 192#L75-1 assume !(0 != main_~p4~0); 194#L80-1 assume !(0 != main_~p5~0); 204#L85-1 [2021-07-06 19:03:53,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:03:53,147 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-07-06 19:03:53,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:03:53,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405094359] [2021-07-06 19:03:53,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:03:53,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:03:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:03:53,159 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:03:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:03:53,165 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:03:53,167 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 19:03:53,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:03:53,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1802449101, now seen corresponding path program 1 times [2021-07-06 19:03:53,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:03:53,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904020077] [2021-07-06 19:03:53,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:03:53,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:03:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 19:03:53,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:03:53,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 19:03:53,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:03:53,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 19:03:53,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:03:53,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 19:03:53,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 19:03:53,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 19:03:53,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904020077] [2021-07-06 19:03:53,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904020077] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 19:03:53,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 19:03:53,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 19:03:53,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393255110] [2021-07-06 19:03:53,180 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 19:03:53,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 19:03:53,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 19:03:53,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 19:03:53,181 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) [2021-07-06 19:03:53,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 19:03:53,191 INFO L93 Difference]: Finished difference Result 126 states and 182 transitions. [2021-07-06 19:03:53,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 19:03:53,191 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 182 transitions. [2021-07-06 19:03:53,192 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 124 [2021-07-06 19:03:53,193 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 126 states and 182 transitions. [2021-07-06 19:03:53,193 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 126 [2021-07-06 19:03:53,194 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 126 [2021-07-06 19:03:53,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 182 transitions. [2021-07-06 19:03:53,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 19:03:53,194 INFO L681 BuchiCegarLoop]: Abstraction has 126 states and 182 transitions. [2021-07-06 19:03:53,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states and 182 transitions. [2021-07-06 19:03:53,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-07-06 19:03:53,199 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) [2021-07-06 19:03:53,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 182 transitions. [2021-07-06 19:03:53,200 INFO L704 BuchiCegarLoop]: Abstraction has 126 states and 182 transitions. [2021-07-06 19:03:53,200 INFO L587 BuchiCegarLoop]: Abstraction has 126 states and 182 transitions. [2021-07-06 19:03:53,200 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-07-06 19:03:53,200 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 182 transitions. [2021-07-06 19:03:53,201 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 124 [2021-07-06 19:03:53,201 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 19:03:53,201 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 19:03:53,201 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-07-06 19:03:53,201 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 19:03:53,201 INFO L791 eck$LassoCheckResult]: Stem: 403#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 401#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;havoc main_~cond~0; 402#L85-1 [2021-07-06 19:03:53,202 INFO L793 eck$LassoCheckResult]: Loop: 402#L85-1 assume !false;main_~cond~0 := main_#t~nondet12;havoc main_#t~nondet12; 423#L28 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0; 420#L43 assume !(0 != main_~p1~0); 421#L43-2 assume !(0 != main_~p2~0); 450#L47-1 assume !(0 != main_~p3~0); 446#L51-1 assume !(0 != main_~p4~0); 444#L55-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 442#L59-1 assume !(0 != main_~p1~0); 439#L65-1 assume !(0 != main_~p2~0); 436#L70-1 assume !(0 != main_~p3~0); 431#L75-1 assume !(0 != main_~p4~0); 428#L80-1 assume !(0 != main_~p5~0); 402#L85-1 [2021-07-06 19:03:53,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:03:53,202 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-07-06 19:03:53,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:03:53,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800362026] [2021-07-06 19:03:53,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:03:53,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:03:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:03:53,208 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:03:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:03:53,212 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:03:53,213 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 19:03:53,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:03:53,214 INFO L82 PathProgramCache]: Analyzing trace with hash -27441739, now seen corresponding path program 1 times [2021-07-06 19:03:53,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:03:53,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757026175] [2021-07-06 19:03:53,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:03:53,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:03:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 19:03:53,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:03:53,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 19:03:53,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:03:53,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 19:03:53,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 19:03:53,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 19:03:53,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757026175] [2021-07-06 19:03:53,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757026175] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 19:03:53,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 19:03:53,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 19:03:53,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387503411] [2021-07-06 19:03:53,225 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 19:03:53,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 19:03:53,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 19:03:53,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 19:03:53,226 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) [2021-07-06 19:03:53,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 19:03:53,235 INFO L93 Difference]: Finished difference Result 242 states and 338 transitions. [2021-07-06 19:03:53,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 19:03:53,236 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 242 states and 338 transitions. [2021-07-06 19:03:53,237 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 240 [2021-07-06 19:03:53,238 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 242 states to 242 states and 338 transitions. [2021-07-06 19:03:53,239 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 242 [2021-07-06 19:03:53,239 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 242 [2021-07-06 19:03:53,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 242 states and 338 transitions. [2021-07-06 19:03:53,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 19:03:53,240 INFO L681 BuchiCegarLoop]: Abstraction has 242 states and 338 transitions. [2021-07-06 19:03:53,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states and 338 transitions. [2021-07-06 19:03:53,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-07-06 19:03:53,247 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) [2021-07-06 19:03:53,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 338 transitions. [2021-07-06 19:03:53,248 INFO L704 BuchiCegarLoop]: Abstraction has 242 states and 338 transitions. [2021-07-06 19:03:53,248 INFO L587 BuchiCegarLoop]: Abstraction has 242 states and 338 transitions. [2021-07-06 19:03:53,248 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-07-06 19:03:53,248 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 242 states and 338 transitions. [2021-07-06 19:03:53,249 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 240 [2021-07-06 19:03:53,249 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 19:03:53,249 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 19:03:53,249 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-07-06 19:03:53,249 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 19:03:53,250 INFO L791 eck$LassoCheckResult]: Stem: 778#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 774#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;havoc main_~cond~0; 775#L85-1 [2021-07-06 19:03:53,250 INFO L793 eck$LassoCheckResult]: Loop: 775#L85-1 assume !false;main_~cond~0 := main_#t~nondet12;havoc main_#t~nondet12; 808#L28 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0; 805#L43 assume !(0 != main_~p1~0); 802#L43-2 assume !(0 != main_~p2~0); 795#L47-1 assume !(0 != main_~p3~0); 796#L51-1 assume !(0 != main_~p4~0); 827#L55-1 assume !(0 != main_~p5~0); 824#L59-1 assume !(0 != main_~p1~0); 821#L65-1 assume !(0 != main_~p2~0); 819#L70-1 assume !(0 != main_~p3~0); 815#L75-1 assume !(0 != main_~p4~0); 812#L80-1 assume !(0 != main_~p5~0); 775#L85-1 [2021-07-06 19:03:53,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:03:53,250 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-07-06 19:03:53,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:03:53,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592883407] [2021-07-06 19:03:53,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:03:53,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:03:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:03:53,255 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:03:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:03:53,259 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:03:53,261 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 19:03:53,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:03:53,261 INFO L82 PathProgramCache]: Analyzing trace with hash 29816563, now seen corresponding path program 1 times [2021-07-06 19:03:53,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:03:53,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779492237] [2021-07-06 19:03:53,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:03:53,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:03:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:03:53,264 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:03:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:03:53,267 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:03:53,269 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 19:03:53,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:03:53,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1243965365, now seen corresponding path program 1 times [2021-07-06 19:03:53,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:03:53,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049360108] [2021-07-06 19:03:53,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:03:53,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:03:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:03:53,279 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:03:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:03:53,287 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:03:53,293 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 19:03:53,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:03:53,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-07-06 19:03:53,505 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2021-07-06 19:03:53,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:03:53,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-07-06 19:03:53,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 07:03:53 BoogieIcfgContainer [2021-07-06 19:03:53,590 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 19:03:53,590 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 19:03:53,590 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 19:03:53,590 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 19:03:53,591 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 07:03:52" (3/4) ... [2021-07-06 19:03:53,592 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 19:03:53,618 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 19:03:53,618 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 19:03:53,619 INFO L168 Benchmark]: Toolchain (without parser) took 1533.26 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 45.4 MB in the beginning and 54.8 MB in the end (delta: -9.3 MB). Peak memory consumption was 37.5 MB. Max. memory is 16.1 GB. [2021-07-06 19:03:53,619 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 62.9 MB. Free memory was 45.0 MB in the beginning and 44.9 MB in the end (delta: 54.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 19:03:53,620 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.93 ms. Allocated memory is still 62.9 MB. Free memory was 45.3 MB in the beginning and 46.4 MB in the end (delta: -1.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-06 19:03:53,620 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.86 ms. Allocated memory is still 62.9 MB. Free memory was 46.2 MB in the beginning and 45.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 19:03:53,620 INFO L168 Benchmark]: Boogie Preprocessor took 32.19 ms. Allocated memory is still 62.9 MB. Free memory was 45.0 MB in the beginning and 43.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 19:03:53,620 INFO L168 Benchmark]: RCFGBuilder took 351.80 ms. Allocated memory is still 62.9 MB. Free memory was 43.8 MB in the beginning and 28.9 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-07-06 19:03:53,621 INFO L168 Benchmark]: BuchiAutomizer took 921.08 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 28.9 MB in the beginning and 22.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. [2021-07-06 19:03:53,621 INFO L168 Benchmark]: Witness Printer took 28.15 ms. Allocated memory is still 75.5 MB. Free memory was 22.3 MB in the beginning and 54.8 MB in the end (delta: -32.4 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2021-07-06 19:03:53,622 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 62.9 MB. Free memory was 45.0 MB in the beginning and 44.9 MB in the end (delta: 54.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 167.93 ms. Allocated memory is still 62.9 MB. Free memory was 45.3 MB in the beginning and 46.4 MB in the end (delta: -1.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.86 ms. Allocated memory is still 62.9 MB. Free memory was 46.2 MB in the beginning and 45.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.19 ms. Allocated memory is still 62.9 MB. Free memory was 45.0 MB in the beginning and 43.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 351.80 ms. Allocated memory is still 62.9 MB. Free memory was 43.8 MB in the beginning and 28.9 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 921.08 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 28.9 MB in the beginning and 22.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. * Witness Printer took 28.15 ms. Allocated memory is still 75.5 MB. Free memory was 22.3 MB in the beginning and 54.8 MB in the end (delta: -32.4 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * 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 0.8s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. 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 33.9ms 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: 177 SDtfs, 89 SDslu, 100 SDs, 0 SdLazy, 20 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 37.0ms Time 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=28255} State at position 1 is {NULL=28257, NULL=0, p1=0, \result=0, p3=0, p2=0, p5=0, NULL=28255, p4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@20de5f7d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@53c630f8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@31f2e819=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7bfea776=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@29892ac3=0, cond=9, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4baa8efa=9, NULL=28256, NULL=0, NULL=0, NULL=0, NULL=28258, lk3=0, lk4=0, lk5=0, NULL=0, lk1=0, lk2=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! [2021-07-06 19:03:53,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...