./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 20ed64ec 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-dev-20ed64e [2021-08-27 14:41:08,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 14:41:08,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 14:41:08,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 14:41:08,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 14:41:08,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 14:41:08,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 14:41:08,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 14:41:08,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 14:41:08,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 14:41:08,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 14:41:08,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 14:41:08,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 14:41:08,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 14:41:08,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 14:41:08,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 14:41:08,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 14:41:08,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 14:41:08,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 14:41:08,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 14:41:08,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 14:41:08,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 14:41:08,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 14:41:08,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 14:41:08,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 14:41:08,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 14:41:08,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 14:41:08,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 14:41:08,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 14:41:08,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 14:41:08,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 14:41:08,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 14:41:08,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 14:41:08,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 14:41:08,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 14:41:08,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 14:41:08,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 14:41:08,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 14:41:08,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 14:41:08,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 14:41:08,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 14:41:08,199 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 14:41:08,236 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 14:41:08,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 14:41:08,237 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 14:41:08,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 14:41:08,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 14:41:08,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 14:41:08,240 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 14:41:08,240 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 14:41:08,240 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 14:41:08,241 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 14:41:08,241 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 14:41:08,242 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 14:41:08,242 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 14:41:08,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 14:41:08,242 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 14:41:08,243 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 14:41:08,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 14:41:08,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 14:41:08,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 14:41:08,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 14:41:08,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 14:41:08,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 14:41:08,244 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 14:41:08,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 14:41:08,244 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 14:41:08,244 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 14:41:08,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 14:41:08,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 14:41:08,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 14:41:08,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 14:41:08,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 14:41:08,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 14:41:08,247 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 14:41:08,247 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d28fd50bd3f7e49bee026aec860ad9015a4fdfba [2021-08-27 14:41:08,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 14:41:08,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 14:41:08,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 14:41:08,582 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 14:41:08,583 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 14:41:08,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_5.c [2021-08-27 14:41:08,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb1e0bf2a/c4b7d9859e4c4355ab26ea9dbc5d3761/FLAG4bc9cfe46 [2021-08-27 14:41:09,070 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 14:41:09,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_5.c [2021-08-27 14:41:09,081 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb1e0bf2a/c4b7d9859e4c4355ab26ea9dbc5d3761/FLAG4bc9cfe46 [2021-08-27 14:41:09,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb1e0bf2a/c4b7d9859e4c4355ab26ea9dbc5d3761 [2021-08-27 14:41:09,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 14:41:09,107 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 14:41:09,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 14:41:09,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 14:41:09,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 14:41:09,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:41:09" (1/1) ... [2021-08-27 14:41:09,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f95829e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:41:09, skipping insertion in model container [2021-08-27 14:41:09,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:41:09" (1/1) ... [2021-08-27 14:41:09,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 14:41:09,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 14:41:09,290 WARN L228 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] [2021-08-27 14:41:09,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 14:41:09,304 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 14:41:09,385 WARN L228 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] [2021-08-27 14:41:09,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 14:41:09,402 INFO L208 MainTranslator]: Completed translation [2021-08-27 14:41:09,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:41:09 WrapperNode [2021-08-27 14:41:09,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 14:41:09,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 14:41:09,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 14:41:09,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 14:41:09,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:41:09" (1/1) ... [2021-08-27 14:41:09,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:41:09" (1/1) ... [2021-08-27 14:41:09,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 14:41:09,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 14:41:09,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 14:41:09,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 14:41:09,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:41:09" (1/1) ... [2021-08-27 14:41:09,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:41:09" (1/1) ... [2021-08-27 14:41:09,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:41:09" (1/1) ... [2021-08-27 14:41:09,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:41:09" (1/1) ... [2021-08-27 14:41:09,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:41:09" (1/1) ... [2021-08-27 14:41:09,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:41:09" (1/1) ... [2021-08-27 14:41:09,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:41:09" (1/1) ... [2021-08-27 14:41:09,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 14:41:09,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 14:41:09,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 14:41:09,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 14:41:09,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:41:09" (1/1) ... [2021-08-27 14:41:09,487 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:41:09,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:41:09,518 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) [2021-08-27 14:41:09,548 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 [2021-08-27 14:41:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 14:41:09,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 14:41:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 14:41:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 14:41:09,844 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 14:41:09,844 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 14:41:09,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:41:09 BoogieIcfgContainer [2021-08-27 14:41:09,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 14:41:09,847 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 14:41:09,847 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 14:41:09,850 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 14:41:09,851 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:41:09,851 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 02:41:09" (1/3) ... [2021-08-27 14:41:09,852 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a5c9b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 02:41:09, skipping insertion in model container [2021-08-27 14:41:09,852 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:41:09,852 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:41:09" (2/3) ... [2021-08-27 14:41:09,852 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a5c9b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 02:41:09, skipping insertion in model container [2021-08-27 14:41:09,857 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:41:09,857 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:41:09" (3/3) ... [2021-08-27 14:41:09,858 INFO L389 chiAutomizerObserver]: Analyzing ICFG test_locks_5.c [2021-08-27 14:41:09,932 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 14:41:09,932 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 14:41:09,933 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 14:41:09,933 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 14:41:09,933 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 14:41:09,933 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 14:41:09,933 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 14:41:09,933 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 14:41:09,945 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) [2021-08-27 14:41:09,958 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2021-08-27 14:41:09,959 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:41:09,959 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:41:09,963 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-27 14:41:09,964 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 14:41:09,964 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 14:41:09,964 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) [2021-08-27 14:41:09,966 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2021-08-27 14:41:09,966 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:41:09,966 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:41:09,967 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-27 14:41:09,967 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 14:41:09,972 INFO L791 eck$LassoCheckResult]: Stem: 6#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; 8#L85-1true [2021-08-27 14:41:09,973 INFO L793 eck$LassoCheckResult]: Loop: 8#L85-1true assume !false;main_~cond~0 := main_#t~nondet12;havoc main_#t~nondet12; 23#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; 9#L43true assume 0 != main_~p1~0;main_~lk1~0 := 1; 10#L43-2true assume 0 != main_~p2~0;main_~lk2~0 := 1; 19#L47-1true assume !(0 != main_~p3~0); 17#L51-1true assume 0 != main_~p4~0;main_~lk4~0 := 1; 18#L55-1true assume 0 != main_~p5~0;main_~lk5~0 := 1; 21#L59-1true assume !(0 != main_~p1~0); 11#L65-1true assume !(0 != main_~p2~0); 20#L70-1true assume !(0 != main_~p3~0); 22#L75-1true assume !(0 != main_~p4~0); 24#L80-1true assume !(0 != main_~p5~0); 8#L85-1true [2021-08-27 14:41:09,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:41:09,978 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-08-27 14:41:09,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:41:09,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634232999] [2021-08-27 14:41:09,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:41:09,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:41:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:41:10,066 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:41:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:41:10,101 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:41:10,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:41:10,106 INFO L82 PathProgramCache]: Analyzing trace with hash -2089480461, now seen corresponding path program 1 times [2021-08-27 14:41:10,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:41:10,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080907031] [2021-08-27 14:41:10,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:41:10,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:41:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:41:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:41:10,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:41:10,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080907031] [2021-08-27 14:41:10,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080907031] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 14:41:10,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 14:41:10,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 14:41:10,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362412658] [2021-08-27 14:41:10,228 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 14:41:10,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:41:10,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 14:41:10,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 14:41:10,243 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) [2021-08-27 14:41:10,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:41:10,288 INFO L93 Difference]: Finished difference Result 45 states and 70 transitions. [2021-08-27 14:41:10,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 14:41:10,291 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 70 transitions. [2021-08-27 14:41:10,297 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 33 [2021-08-27 14:41:10,302 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 35 states and 53 transitions. [2021-08-27 14:41:10,303 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2021-08-27 14:41:10,304 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-08-27 14:41:10,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 53 transitions. [2021-08-27 14:41:10,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 14:41:10,305 INFO L681 BuchiCegarLoop]: Abstraction has 35 states and 53 transitions. [2021-08-27 14:41:10,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 53 transitions. [2021-08-27 14:41:10,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-08-27 14:41:10,330 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) [2021-08-27 14:41:10,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 53 transitions. [2021-08-27 14:41:10,332 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 53 transitions. [2021-08-27 14:41:10,332 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 53 transitions. [2021-08-27 14:41:10,332 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 14:41:10,332 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 53 transitions. [2021-08-27 14:41:10,335 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 33 [2021-08-27 14:41:10,336 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:41:10,336 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:41:10,337 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-27 14:41:10,337 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 14:41:10,338 INFO L791 eck$LassoCheckResult]: Stem: 80#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 81#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;havoc main_~cond~0; 79#L85-1 [2021-08-27 14:41:10,338 INFO L793 eck$LassoCheckResult]: Loop: 79#L85-1 assume !false;main_~cond~0 := main_#t~nondet12;havoc main_#t~nondet12; 84#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; 100#L43 assume !(0 != main_~p1~0); 87#L43-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 88#L47-1 assume !(0 != main_~p3~0); 93#L51-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 94#L55-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 95#L59-1 assume !(0 != main_~p1~0); 101#L65-1 assume !(0 != main_~p2~0); 111#L70-1 assume !(0 != main_~p3~0); 98#L75-1 assume !(0 != main_~p4~0); 92#L80-1 assume !(0 != main_~p5~0); 79#L85-1 [2021-08-27 14:41:10,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:41:10,340 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-08-27 14:41:10,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:41:10,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831552556] [2021-08-27 14:41:10,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:41:10,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:41:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:41:10,364 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:41:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:41:10,386 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:41:10,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:41:10,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1812459825, now seen corresponding path program 1 times [2021-08-27 14:41:10,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:41:10,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015435815] [2021-08-27 14:41:10,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:41:10,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:41:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:41:10,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:41:10,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:41:10,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015435815] [2021-08-27 14:41:10,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015435815] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 14:41:10,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 14:41:10,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 14:41:10,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554136393] [2021-08-27 14:41:10,434 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 14:41:10,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:41:10,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 14:41:10,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 14:41:10,437 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) [2021-08-27 14:41:10,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:41:10,471 INFO L93 Difference]: Finished difference Result 66 states and 98 transitions. [2021-08-27 14:41:10,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 14:41:10,472 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 98 transitions. [2021-08-27 14:41:10,475 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 64 [2021-08-27 14:41:10,477 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 66 states and 98 transitions. [2021-08-27 14:41:10,478 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 66 [2021-08-27 14:41:10,478 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 66 [2021-08-27 14:41:10,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 98 transitions. [2021-08-27 14:41:10,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 14:41:10,479 INFO L681 BuchiCegarLoop]: Abstraction has 66 states and 98 transitions. [2021-08-27 14:41:10,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 98 transitions. [2021-08-27 14:41:10,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-08-27 14:41:10,486 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) [2021-08-27 14:41:10,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 98 transitions. [2021-08-27 14:41:10,489 INFO L704 BuchiCegarLoop]: Abstraction has 66 states and 98 transitions. [2021-08-27 14:41:10,489 INFO L587 BuchiCegarLoop]: Abstraction has 66 states and 98 transitions. [2021-08-27 14:41:10,489 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 14:41:10,489 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 98 transitions. [2021-08-27 14:41:10,494 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 64 [2021-08-27 14:41:10,494 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:41:10,495 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:41:10,496 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-27 14:41:10,496 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 14:41:10,496 INFO L791 eck$LassoCheckResult]: Stem: 189#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); 190#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; 200#L85-1 [2021-08-27 14:41:10,497 INFO L793 eck$LassoCheckResult]: Loop: 200#L85-1 assume !false;main_~cond~0 := main_#t~nondet12;havoc main_#t~nondet12; 224#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; 222#L43 assume !(0 != main_~p1~0); 219#L43-2 assume !(0 != main_~p2~0); 217#L47-1 assume !(0 != main_~p3~0); 215#L51-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 214#L55-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 212#L59-1 assume !(0 != main_~p1~0); 213#L65-1 assume !(0 != main_~p2~0); 235#L70-1 assume !(0 != main_~p3~0); 231#L75-1 assume !(0 != main_~p4~0); 228#L80-1 assume !(0 != main_~p5~0); 200#L85-1 [2021-08-27 14:41:10,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:41:10,498 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-08-27 14:41:10,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:41:10,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702146022] [2021-08-27 14:41:10,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:41:10,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:41:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:41:10,521 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:41:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:41:10,533 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:41:10,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:41:10,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1802449101, now seen corresponding path program 1 times [2021-08-27 14:41:10,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:41:10,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915605587] [2021-08-27 14:41:10,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:41:10,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:41:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:41:10,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:41:10,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:41:10,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915605587] [2021-08-27 14:41:10,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915605587] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 14:41:10,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 14:41:10,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 14:41:10,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379956733] [2021-08-27 14:41:10,577 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 14:41:10,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:41:10,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 14:41:10,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 14:41:10,578 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) [2021-08-27 14:41:10,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:41:10,611 INFO L93 Difference]: Finished difference Result 126 states and 182 transitions. [2021-08-27 14:41:10,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 14:41:10,612 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 182 transitions. [2021-08-27 14:41:10,616 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 124 [2021-08-27 14:41:10,619 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 126 states and 182 transitions. [2021-08-27 14:41:10,619 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 126 [2021-08-27 14:41:10,620 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 126 [2021-08-27 14:41:10,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 182 transitions. [2021-08-27 14:41:10,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 14:41:10,623 INFO L681 BuchiCegarLoop]: Abstraction has 126 states and 182 transitions. [2021-08-27 14:41:10,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states and 182 transitions. [2021-08-27 14:41:10,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-08-27 14:41:10,641 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) [2021-08-27 14:41:10,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 182 transitions. [2021-08-27 14:41:10,643 INFO L704 BuchiCegarLoop]: Abstraction has 126 states and 182 transitions. [2021-08-27 14:41:10,643 INFO L587 BuchiCegarLoop]: Abstraction has 126 states and 182 transitions. [2021-08-27 14:41:10,643 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 14:41:10,643 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 182 transitions. [2021-08-27 14:41:10,644 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 124 [2021-08-27 14:41:10,644 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:41:10,644 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:41:10,645 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-27 14:41:10,645 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 14:41:10,645 INFO L791 eck$LassoCheckResult]: Stem: 385#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 386#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;havoc main_~cond~0; 400#L85-1 [2021-08-27 14:41:10,645 INFO L793 eck$LassoCheckResult]: Loop: 400#L85-1 assume !false;main_~cond~0 := main_#t~nondet12;havoc main_#t~nondet12; 435#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; 431#L43 assume !(0 != main_~p1~0); 428#L43-2 assume !(0 != main_~p2~0); 426#L47-1 assume !(0 != main_~p3~0); 425#L51-1 assume !(0 != main_~p4~0); 421#L55-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 422#L59-1 assume !(0 != main_~p1~0); 447#L65-1 assume !(0 != main_~p2~0); 445#L70-1 assume !(0 != main_~p3~0); 442#L75-1 assume !(0 != main_~p4~0); 439#L80-1 assume !(0 != main_~p5~0); 400#L85-1 [2021-08-27 14:41:10,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:41:10,646 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-08-27 14:41:10,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:41:10,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818723288] [2021-08-27 14:41:10,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:41:10,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:41:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:41:10,663 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:41:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:41:10,682 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:41:10,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:41:10,684 INFO L82 PathProgramCache]: Analyzing trace with hash -27441739, now seen corresponding path program 1 times [2021-08-27 14:41:10,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:41:10,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810625213] [2021-08-27 14:41:10,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:41:10,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:41:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:41:10,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:41:10,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:41:10,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810625213] [2021-08-27 14:41:10,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810625213] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 14:41:10,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 14:41:10,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 14:41:10,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794052974] [2021-08-27 14:41:10,716 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 14:41:10,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:41:10,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 14:41:10,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 14:41:10,718 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) [2021-08-27 14:41:10,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:41:10,744 INFO L93 Difference]: Finished difference Result 242 states and 338 transitions. [2021-08-27 14:41:10,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 14:41:10,745 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 242 states and 338 transitions. [2021-08-27 14:41:10,747 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 240 [2021-08-27 14:41:10,748 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 242 states to 242 states and 338 transitions. [2021-08-27 14:41:10,749 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 242 [2021-08-27 14:41:10,749 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 242 [2021-08-27 14:41:10,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 242 states and 338 transitions. [2021-08-27 14:41:10,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 14:41:10,750 INFO L681 BuchiCegarLoop]: Abstraction has 242 states and 338 transitions. [2021-08-27 14:41:10,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states and 338 transitions. [2021-08-27 14:41:10,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-08-27 14:41:10,757 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) [2021-08-27 14:41:10,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 338 transitions. [2021-08-27 14:41:10,758 INFO L704 BuchiCegarLoop]: Abstraction has 242 states and 338 transitions. [2021-08-27 14:41:10,758 INFO L587 BuchiCegarLoop]: Abstraction has 242 states and 338 transitions. [2021-08-27 14:41:10,759 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-08-27 14:41:10,759 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 242 states and 338 transitions. [2021-08-27 14:41:10,760 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 240 [2021-08-27 14:41:10,760 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:41:10,760 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:41:10,761 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-27 14:41:10,761 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 14:41:10,761 INFO L791 eck$LassoCheckResult]: Stem: 759#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); 760#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; 773#L85-1 [2021-08-27 14:41:10,761 INFO L793 eck$LassoCheckResult]: Loop: 773#L85-1 assume !false;main_~cond~0 := main_#t~nondet12;havoc main_#t~nondet12; 836#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; 833#L43 assume !(0 != main_~p1~0); 829#L43-2 assume !(0 != main_~p2~0); 826#L47-1 assume !(0 != main_~p3~0); 820#L51-1 assume !(0 != main_~p4~0); 795#L55-1 assume !(0 != main_~p5~0); 796#L59-1 assume !(0 != main_~p1~0); 853#L65-1 assume !(0 != main_~p2~0); 842#L70-1 assume !(0 != main_~p3~0); 821#L75-1 assume !(0 != main_~p4~0); 823#L80-1 assume !(0 != main_~p5~0); 773#L85-1 [2021-08-27 14:41:10,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:41:10,762 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-08-27 14:41:10,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:41:10,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340987784] [2021-08-27 14:41:10,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:41:10,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:41:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:41:10,769 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:41:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:41:10,776 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:41:10,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:41:10,777 INFO L82 PathProgramCache]: Analyzing trace with hash 29816563, now seen corresponding path program 1 times [2021-08-27 14:41:10,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:41:10,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381030300] [2021-08-27 14:41:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:41:10,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:41:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:41:10,781 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:41:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:41:10,785 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:41:10,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:41:10,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1243965365, now seen corresponding path program 1 times [2021-08-27 14:41:10,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:41:10,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339799218] [2021-08-27 14:41:10,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:41:10,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:41:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:41:10,793 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:41:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:41:10,802 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:41:11,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 02:41:11 BoogieIcfgContainer [2021-08-27 14:41:11,507 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 14:41:11,508 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 14:41:11,508 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 14:41:11,508 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 14:41:11,509 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:41:09" (3/4) ... [2021-08-27 14:41:11,511 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 14:41:11,538 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 14:41:11,538 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 14:41:11,539 INFO L168 Benchmark]: Toolchain (without parser) took 2431.59 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 36.8 MB in the beginning and 60.3 MB in the end (delta: -23.5 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2021-08-27 14:41:11,540 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 58.7 MB. Free memory was 39.2 MB in the beginning and 39.2 MB in the end (delta: 25.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:41:11,540 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.00 ms. Allocated memory is still 58.7 MB. Free memory was 36.6 MB in the beginning and 41.3 MB in the end (delta: -4.7 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2021-08-27 14:41:11,541 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.30 ms. Allocated memory is still 58.7 MB. Free memory was 41.3 MB in the beginning and 39.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 14:41:11,541 INFO L168 Benchmark]: Boogie Preprocessor took 39.36 ms. Allocated memory is still 58.7 MB. Free memory was 39.8 MB in the beginning and 38.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:41:11,541 INFO L168 Benchmark]: RCFGBuilder took 367.66 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 38.7 MB in the beginning and 50.0 MB in the end (delta: -11.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-08-27 14:41:11,542 INFO L168 Benchmark]: BuchiAutomizer took 1660.35 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 49.7 MB in the beginning and 62.3 MB in the end (delta: -12.6 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. [2021-08-27 14:41:11,542 INFO L168 Benchmark]: Witness Printer took 30.20 ms. Allocated memory is still 86.0 MB. Free memory was 62.0 MB in the beginning and 60.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 14:41:11,544 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 58.7 MB. Free memory was 39.2 MB in the beginning and 39.2 MB in the end (delta: 25.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 292.00 ms. Allocated memory is still 58.7 MB. Free memory was 36.6 MB in the beginning and 41.3 MB in the end (delta: -4.7 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.30 ms. Allocated memory is still 58.7 MB. Free memory was 41.3 MB in the beginning and 39.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.36 ms. Allocated memory is still 58.7 MB. Free memory was 39.8 MB in the beginning and 38.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 367.66 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 38.7 MB in the beginning and 50.0 MB in the end (delta: -11.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1660.35 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 49.7 MB in the beginning and 62.3 MB in the end (delta: -12.6 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. * Witness Printer took 30.20 ms. Allocated memory is still 86.0 MB. Free memory was 62.0 MB in the beginning and 60.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 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 1.5s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. 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 53.0ms 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, 65.3ms 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=3824} State at position 1 is {NULL=3827, NULL=0, p1=0, \result=0, p3=0, p2=0, p5=0, NULL=3824, p4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@31be3fcd=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@13ee987c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@477900ca=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@20c6f706=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@60c6f484=0, cond=11, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@78cbd98=11, NULL=3826, NULL=0, NULL=0, NULL=0, NULL=3825, 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! [2021-08-27 14:41:11,580 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...