./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad9031-2c7f-4a37-8bd5-35170280c408/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad9031-2c7f-4a37-8bd5-35170280c408/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad9031-2c7f-4a37-8bd5-35170280c408/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad9031-2c7f-4a37-8bd5-35170280c408/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad9031-2c7f-4a37-8bd5-35170280c408/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad9031-2c7f-4a37-8bd5-35170280c408/bin/uautomizer-GMMbpWq8iD --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 c0f4ea6e3bcbb2b79339dce82d9fa934022810e04d651b4bbb6fb3904b8f8c98 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-b2eff8b [2021-10-28 22:50:18,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:50:18,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:50:18,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:50:18,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:50:18,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:50:18,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:50:18,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:50:18,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:50:18,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:50:18,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:50:18,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:50:18,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:50:18,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:50:18,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:50:18,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:50:18,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:50:18,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:50:18,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:50:18,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:50:18,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:50:18,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:50:18,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:50:18,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:50:18,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:50:18,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:50:18,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:50:18,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:50:18,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:50:18,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:50:18,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:50:18,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:50:18,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:50:18,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:50:18,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:50:18,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:50:18,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:50:18,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:50:18,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:50:18,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:50:18,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:50:18,994 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad9031-2c7f-4a37-8bd5-35170280c408/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 22:50:19,058 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:50:19,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:50:19,061 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:50:19,061 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:50:19,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:50:19,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:50:19,065 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:50:19,065 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 22:50:19,065 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 22:50:19,066 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 22:50:19,067 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 22:50:19,067 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 22:50:19,068 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 22:50:19,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:50:19,068 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:50:19,068 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 22:50:19,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:50:19,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:50:19,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:50:19,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 22:50:19,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 22:50:19,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 22:50:19,070 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:50:19,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:50:19,071 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 22:50:19,071 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:50:19,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 22:50:19,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:50:19,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:50:19,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:50:19,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:50:19,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:50:19,077 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 22:50:19,077 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad9031-2c7f-4a37-8bd5-35170280c408/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad9031-2c7f-4a37-8bd5-35170280c408/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0f4ea6e3bcbb2b79339dce82d9fa934022810e04d651b4bbb6fb3904b8f8c98 [2021-10-28 22:50:19,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:50:19,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:50:19,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:50:19,404 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:50:19,405 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:50:19,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad9031-2c7f-4a37-8bd5-35170280c408/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/locks/test_locks_6.c [2021-10-28 22:50:19,486 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad9031-2c7f-4a37-8bd5-35170280c408/bin/uautomizer-GMMbpWq8iD/data/aea7c9814/f226a813364d400e885bb73cb66467df/FLAG4bc25edb4 [2021-10-28 22:50:20,128 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:50:20,129 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad9031-2c7f-4a37-8bd5-35170280c408/sv-benchmarks/c/locks/test_locks_6.c [2021-10-28 22:50:20,143 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad9031-2c7f-4a37-8bd5-35170280c408/bin/uautomizer-GMMbpWq8iD/data/aea7c9814/f226a813364d400e885bb73cb66467df/FLAG4bc25edb4 [2021-10-28 22:50:20,161 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad9031-2c7f-4a37-8bd5-35170280c408/bin/uautomizer-GMMbpWq8iD/data/aea7c9814/f226a813364d400e885bb73cb66467df [2021-10-28 22:50:20,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:50:20,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:50:20,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:50:20,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:50:20,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:50:20,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:50:20" (1/1) ... [2021-10-28 22:50:20,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5929bb8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:20, skipping insertion in model container [2021-10-28 22:50:20,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:50:20" (1/1) ... [2021-10-28 22:50:20,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:50:20,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:50:20,435 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad9031-2c7f-4a37-8bd5-35170280c408/sv-benchmarks/c/locks/test_locks_6.c[2544,2557] [2021-10-28 22:50:20,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:50:20,455 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:50:20,485 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad9031-2c7f-4a37-8bd5-35170280c408/sv-benchmarks/c/locks/test_locks_6.c[2544,2557] [2021-10-28 22:50:20,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:50:20,502 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:50:20,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:20 WrapperNode [2021-10-28 22:50:20,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:50:20,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:50:20,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:50:20,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:50:20,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:20" (1/1) ... [2021-10-28 22:50:20,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:20" (1/1) ... [2021-10-28 22:50:20,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:50:20,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:50:20,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:50:20,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:50:20,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:20" (1/1) ... [2021-10-28 22:50:20,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:20" (1/1) ... [2021-10-28 22:50:20,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:20" (1/1) ... [2021-10-28 22:50:20,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:20" (1/1) ... [2021-10-28 22:50:20,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:20" (1/1) ... [2021-10-28 22:50:20,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:20" (1/1) ... [2021-10-28 22:50:20,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:20" (1/1) ... [2021-10-28 22:50:20,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:50:20,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:50:20,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:50:20,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:50:20,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:20" (1/1) ... [2021-10-28 22:50:20,583 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:50:20,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad9031-2c7f-4a37-8bd5-35170280c408/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:20,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad9031-2c7f-4a37-8bd5-35170280c408/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:50:20,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad9031-2c7f-4a37-8bd5-35170280c408/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 22:50:20,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:50:20,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:50:20,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 22:50:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:50:21,047 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:50:21,047 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 22:50:21,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:50:21 BoogieIcfgContainer [2021-10-28 22:50:21,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:50:21,051 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 22:50:21,051 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 22:50:21,055 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 22:50:21,056 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:50:21,057 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 10:50:20" (1/3) ... [2021-10-28 22:50:21,058 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36e5de8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 10:50:21, skipping insertion in model container [2021-10-28 22:50:21,058 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:50:21,058 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:20" (2/3) ... [2021-10-28 22:50:21,059 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36e5de8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 10:50:21, skipping insertion in model container [2021-10-28 22:50:21,059 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:50:21,059 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:50:21" (3/3) ... [2021-10-28 22:50:21,061 INFO L389 chiAutomizerObserver]: Analyzing ICFG test_locks_6.c [2021-10-28 22:50:21,112 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 22:50:21,125 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 22:50:21,126 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 22:50:21,126 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 22:50:21,126 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 22:50:21,126 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 22:50:21,127 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 22:50:21,127 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 22:50:21,160 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 states have internal predecessors, (47), 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) [2021-10-28 22:50:21,198 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2021-10-28 22:50:21,199 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:50:21,199 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:50:21,207 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 22:50:21,207 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:21,207 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 22:50:21,208 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 states have internal predecessors, (47), 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) [2021-10-28 22:50:21,214 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2021-10-28 22:50:21,214 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:50:21,215 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:50:21,215 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 22:50:21,215 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:21,223 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); 9#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_#t~nondet13, 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_~p6~0, main_~lk6~0, 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;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;havoc main_~cond~0; 12#L99-1true [2021-10-28 22:50:21,226 INFO L793 eck$LassoCheckResult]: Loop: 12#L99-1true assume !false;main_~cond~0 := main_#t~nondet13;havoc main_#t~nondet13; 8#L31true 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;main_~lk6~0 := 0; 15#L48true assume 0 != main_~p1~0;main_~lk1~0 := 1; 4#L48-2true assume 0 != main_~p2~0;main_~lk2~0 := 1; 28#L52-1true assume !(0 != main_~p3~0); 21#L56-1true assume 0 != main_~p4~0;main_~lk4~0 := 1; 6#L60-1true assume 0 != main_~p5~0;main_~lk5~0 := 1; 25#L64-1true assume 0 != main_~p6~0;main_~lk6~0 := 1; 24#L68-1true assume !(0 != main_~p1~0); 27#L74-1true assume !(0 != main_~p2~0); 13#L79-1true assume !(0 != main_~p3~0); 23#L84-1true assume !(0 != main_~p4~0); 14#L89-1true assume !(0 != main_~p5~0); 11#L94-1true assume !(0 != main_~p6~0); 12#L99-1true [2021-10-28 22:50:21,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:21,238 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-28 22:50:21,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:21,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488915614] [2021-10-28 22:50:21,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:21,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:50:21,394 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:50:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:50:21,447 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:50:21,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:21,451 INFO L85 PathProgramCache]: Analyzing trace with hash -11500681, now seen corresponding path program 1 times [2021-10-28 22:50:21,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:21,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181975597] [2021-10-28 22:50:21,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:21,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:50:21,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:21,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:21,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181975597] [2021-10-28 22:50:21,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181975597] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:50:21,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:50:21,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:50:21,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352310196] [2021-10-28 22:50:21,575 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 22:50:21,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:21,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:50:21,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:50:21,597 INFO L87 Difference]: Start difference. First operand has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 states have internal predecessors, (47), 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 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:21,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:21,646 INFO L93 Difference]: Finished difference Result 51 states and 82 transitions. [2021-10-28 22:50:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:50:21,649 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 82 transitions. [2021-10-28 22:50:21,652 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 39 [2021-10-28 22:50:21,657 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 41 states and 63 transitions. [2021-10-28 22:50:21,658 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-10-28 22:50:21,659 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-10-28 22:50:21,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 63 transitions. [2021-10-28 22:50:21,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:50:21,661 INFO L681 BuchiCegarLoop]: Abstraction has 41 states and 63 transitions. [2021-10-28 22:50:21,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 63 transitions. [2021-10-28 22:50:21,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-28 22:50:21,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 40 states have internal predecessors, (63), 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) [2021-10-28 22:50:21,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 63 transitions. [2021-10-28 22:50:21,692 INFO L704 BuchiCegarLoop]: Abstraction has 41 states and 63 transitions. [2021-10-28 22:50:21,692 INFO L587 BuchiCegarLoop]: Abstraction has 41 states and 63 transitions. [2021-10-28 22:50:21,692 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 22:50:21,692 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 63 transitions. [2021-10-28 22:50:21,694 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 39 [2021-10-28 22:50:21,694 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:50:21,695 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:50:21,695 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 22:50:21,695 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:21,696 INFO L791 eck$LassoCheckResult]: Stem: 89#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 90#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;havoc main_~cond~0; 104#L99-1 [2021-10-28 22:50:21,696 INFO L793 eck$LassoCheckResult]: Loop: 104#L99-1 assume !false;main_~cond~0 := main_#t~nondet13;havoc main_#t~nondet13; 119#L31 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;main_~lk6~0 := 0; 118#L48 assume !(0 != main_~p1~0); 87#L48-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 88#L52-1 assume !(0 != main_~p3~0); 117#L56-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 116#L60-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 115#L64-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 114#L68-1 assume !(0 != main_~p1~0); 111#L74-1 assume !(0 != main_~p2~0); 109#L79-1 assume !(0 != main_~p3~0); 92#L84-1 assume !(0 != main_~p4~0); 123#L89-1 assume !(0 != main_~p5~0); 121#L94-1 assume !(0 != main_~p6~0); 104#L99-1 [2021-10-28 22:50:21,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:21,697 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-10-28 22:50:21,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:21,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530607219] [2021-10-28 22:50:21,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:21,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:50:21,712 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:50:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:50:21,730 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:50:21,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:21,731 INFO L85 PathProgramCache]: Analyzing trace with hash 246664757, now seen corresponding path program 1 times [2021-10-28 22:50:21,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:21,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368610851] [2021-10-28 22:50:21,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:21,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:50:21,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:21,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:21,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368610851] [2021-10-28 22:50:21,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368610851] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:50:21,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:50:21,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:50:21,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303809156] [2021-10-28 22:50:21,783 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 22:50:21,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:21,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:50:21,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:50:21,788 INFO L87 Difference]: Start difference. First operand 41 states and 63 transitions. cyclomatic complexity: 24 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:21,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:21,824 INFO L93 Difference]: Finished difference Result 78 states and 118 transitions. [2021-10-28 22:50:21,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:50:21,825 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 118 transitions. [2021-10-28 22:50:21,829 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 76 [2021-10-28 22:50:21,831 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 78 states and 118 transitions. [2021-10-28 22:50:21,832 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 78 [2021-10-28 22:50:21,832 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 78 [2021-10-28 22:50:21,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 118 transitions. [2021-10-28 22:50:21,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:50:21,833 INFO L681 BuchiCegarLoop]: Abstraction has 78 states and 118 transitions. [2021-10-28 22:50:21,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 118 transitions. [2021-10-28 22:50:21,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-28 22:50:21,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 78 states have (on average 1.5128205128205128) internal successors, (118), 77 states have internal predecessors, (118), 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) [2021-10-28 22:50:21,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 118 transitions. [2021-10-28 22:50:21,842 INFO L704 BuchiCegarLoop]: Abstraction has 78 states and 118 transitions. [2021-10-28 22:50:21,843 INFO L587 BuchiCegarLoop]: Abstraction has 78 states and 118 transitions. [2021-10-28 22:50:21,843 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 22:50:21,843 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 78 states and 118 transitions. [2021-10-28 22:50:21,845 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 76 [2021-10-28 22:50:21,845 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:50:21,846 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:50:21,846 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 22:50:21,846 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:21,847 INFO L791 eck$LassoCheckResult]: Stem: 214#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); 215#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_#t~nondet13, 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_~p6~0, main_~lk6~0, 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;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;havoc main_~cond~0; 227#L99-1 [2021-10-28 22:50:21,847 INFO L793 eck$LassoCheckResult]: Loop: 227#L99-1 assume !false;main_~cond~0 := main_#t~nondet13;havoc main_#t~nondet13; 263#L31 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;main_~lk6~0 := 0; 259#L48 assume !(0 != main_~p1~0); 258#L48-2 assume !(0 != main_~p2~0); 257#L52-1 assume !(0 != main_~p3~0); 255#L56-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 253#L60-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 251#L64-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 249#L68-1 assume !(0 != main_~p1~0); 240#L74-1 assume !(0 != main_~p2~0); 238#L79-1 assume !(0 != main_~p3~0); 217#L84-1 assume !(0 != main_~p4~0); 276#L89-1 assume !(0 != main_~p5~0); 272#L94-1 assume !(0 != main_~p6~0); 227#L99-1 [2021-10-28 22:50:21,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:21,847 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-10-28 22:50:21,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:21,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932975169] [2021-10-28 22:50:21,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:21,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:50:21,861 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:50:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:50:21,876 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:50:21,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:21,877 INFO L85 PathProgramCache]: Analyzing trace with hash 947729335, now seen corresponding path program 1 times [2021-10-28 22:50:21,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:21,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633921896] [2021-10-28 22:50:21,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:21,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:50:21,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:21,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:21,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633921896] [2021-10-28 22:50:21,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633921896] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:50:21,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:50:21,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:50:21,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625732685] [2021-10-28 22:50:21,913 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 22:50:21,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:21,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:50:21,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:50:21,914 INFO L87 Difference]: Start difference. First operand 78 states and 118 transitions. cyclomatic complexity: 44 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:21,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:21,938 INFO L93 Difference]: Finished difference Result 150 states and 222 transitions. [2021-10-28 22:50:21,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:50:21,939 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 150 states and 222 transitions. [2021-10-28 22:50:21,943 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 148 [2021-10-28 22:50:21,946 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 150 states to 150 states and 222 transitions. [2021-10-28 22:50:21,946 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 150 [2021-10-28 22:50:21,947 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 150 [2021-10-28 22:50:21,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 150 states and 222 transitions. [2021-10-28 22:50:21,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:50:21,948 INFO L681 BuchiCegarLoop]: Abstraction has 150 states and 222 transitions. [2021-10-28 22:50:21,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states and 222 transitions. [2021-10-28 22:50:21,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-10-28 22:50:21,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 150 states have (on average 1.48) internal successors, (222), 149 states have internal predecessors, (222), 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) [2021-10-28 22:50:21,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 222 transitions. [2021-10-28 22:50:21,964 INFO L704 BuchiCegarLoop]: Abstraction has 150 states and 222 transitions. [2021-10-28 22:50:21,965 INFO L587 BuchiCegarLoop]: Abstraction has 150 states and 222 transitions. [2021-10-28 22:50:21,965 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 22:50:21,965 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 150 states and 222 transitions. [2021-10-28 22:50:21,968 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 148 [2021-10-28 22:50:21,968 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:50:21,968 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:50:21,969 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 22:50:21,969 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:21,969 INFO L791 eck$LassoCheckResult]: Stem: 448#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 449#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;havoc main_~cond~0; 461#L99-1 [2021-10-28 22:50:21,969 INFO L793 eck$LassoCheckResult]: Loop: 461#L99-1 assume !false;main_~cond~0 := main_#t~nondet13;havoc main_#t~nondet13; 503#L31 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;main_~lk6~0 := 0; 498#L48 assume !(0 != main_~p1~0); 492#L48-2 assume !(0 != main_~p2~0); 485#L52-1 assume !(0 != main_~p3~0); 486#L56-1 assume !(0 != main_~p4~0); 546#L60-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 545#L64-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 539#L68-1 assume !(0 != main_~p1~0); 541#L74-1 assume !(0 != main_~p2~0); 538#L79-1 assume !(0 != main_~p3~0); 536#L84-1 assume !(0 != main_~p4~0); 535#L89-1 assume !(0 != main_~p5~0); 517#L94-1 assume !(0 != main_~p6~0); 461#L99-1 [2021-10-28 22:50:21,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:21,970 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-10-28 22:50:21,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:21,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335055327] [2021-10-28 22:50:21,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:21,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:50:21,982 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:50:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:50:21,995 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:50:21,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:21,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1627787705, now seen corresponding path program 1 times [2021-10-28 22:50:21,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:21,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853969244] [2021-10-28 22:50:21,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:21,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:50:22,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:22,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:22,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853969244] [2021-10-28 22:50:22,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853969244] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:50:22,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:50:22,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:50:22,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162054720] [2021-10-28 22:50:22,023 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 22:50:22,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:22,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:50:22,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:50:22,025 INFO L87 Difference]: Start difference. First operand 150 states and 222 transitions. cyclomatic complexity: 80 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:22,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:22,044 INFO L93 Difference]: Finished difference Result 290 states and 418 transitions. [2021-10-28 22:50:22,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:50:22,044 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 290 states and 418 transitions. [2021-10-28 22:50:22,049 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 288 [2021-10-28 22:50:22,053 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 290 states to 290 states and 418 transitions. [2021-10-28 22:50:22,054 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 290 [2021-10-28 22:50:22,055 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 290 [2021-10-28 22:50:22,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 290 states and 418 transitions. [2021-10-28 22:50:22,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:50:22,062 INFO L681 BuchiCegarLoop]: Abstraction has 290 states and 418 transitions. [2021-10-28 22:50:22,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states and 418 transitions. [2021-10-28 22:50:22,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-10-28 22:50:22,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 290 states have (on average 1.4413793103448276) internal successors, (418), 289 states have internal predecessors, (418), 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) [2021-10-28 22:50:22,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 418 transitions. [2021-10-28 22:50:22,099 INFO L704 BuchiCegarLoop]: Abstraction has 290 states and 418 transitions. [2021-10-28 22:50:22,100 INFO L587 BuchiCegarLoop]: Abstraction has 290 states and 418 transitions. [2021-10-28 22:50:22,100 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 22:50:22,100 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 290 states and 418 transitions. [2021-10-28 22:50:22,102 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 288 [2021-10-28 22:50:22,102 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:50:22,102 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:50:22,103 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 22:50:22,103 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:22,103 INFO L791 eck$LassoCheckResult]: Stem: 894#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); 895#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_#t~nondet13, 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_~p6~0, main_~lk6~0, 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;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;havoc main_~cond~0; 907#L99-1 [2021-10-28 22:50:22,103 INFO L793 eck$LassoCheckResult]: Loop: 907#L99-1 assume !false;main_~cond~0 := main_#t~nondet13;havoc main_#t~nondet13; 955#L31 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;main_~lk6~0 := 0; 953#L48 assume !(0 != main_~p1~0); 949#L48-2 assume !(0 != main_~p2~0); 947#L52-1 assume !(0 != main_~p3~0); 943#L56-1 assume !(0 != main_~p4~0); 939#L60-1 assume !(0 != main_~p5~0); 937#L64-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 934#L68-1 assume !(0 != main_~p1~0); 935#L74-1 assume !(0 != main_~p2~0); 971#L79-1 assume !(0 != main_~p3~0); 966#L84-1 assume !(0 != main_~p4~0); 962#L89-1 assume !(0 != main_~p5~0); 959#L94-1 assume !(0 != main_~p6~0); 907#L99-1 [2021-10-28 22:50:22,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:22,104 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-10-28 22:50:22,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:22,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821658830] [2021-10-28 22:50:22,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:22,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:50:22,140 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:50:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:50:22,153 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:50:22,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:22,154 INFO L85 PathProgramCache]: Analyzing trace with hash 818441079, now seen corresponding path program 1 times [2021-10-28 22:50:22,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:22,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153990910] [2021-10-28 22:50:22,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:22,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:50:22,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:22,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:22,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153990910] [2021-10-28 22:50:22,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153990910] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:50:22,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:50:22,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 22:50:22,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271699109] [2021-10-28 22:50:22,194 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 22:50:22,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:22,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:50:22,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:50:22,195 INFO L87 Difference]: Start difference. First operand 290 states and 418 transitions. cyclomatic complexity: 144 Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:22,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:22,212 INFO L93 Difference]: Finished difference Result 562 states and 786 transitions. [2021-10-28 22:50:22,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:50:22,212 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 562 states and 786 transitions. [2021-10-28 22:50:22,218 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 560 [2021-10-28 22:50:22,224 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 562 states to 562 states and 786 transitions. [2021-10-28 22:50:22,224 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 562 [2021-10-28 22:50:22,225 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 562 [2021-10-28 22:50:22,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 562 states and 786 transitions. [2021-10-28 22:50:22,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:50:22,229 INFO L681 BuchiCegarLoop]: Abstraction has 562 states and 786 transitions. [2021-10-28 22:50:22,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states and 786 transitions. [2021-10-28 22:50:22,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2021-10-28 22:50:22,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 562 states have (on average 1.398576512455516) internal successors, (786), 561 states have internal predecessors, (786), 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) [2021-10-28 22:50:22,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 786 transitions. [2021-10-28 22:50:22,260 INFO L704 BuchiCegarLoop]: Abstraction has 562 states and 786 transitions. [2021-10-28 22:50:22,260 INFO L587 BuchiCegarLoop]: Abstraction has 562 states and 786 transitions. [2021-10-28 22:50:22,260 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 22:50:22,260 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 562 states and 786 transitions. [2021-10-28 22:50:22,265 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 560 [2021-10-28 22:50:22,265 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:50:22,265 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:50:22,265 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 22:50:22,266 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:22,266 INFO L791 eck$LassoCheckResult]: Stem: 1752#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1753#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;havoc main_~cond~0; 1765#L99-1 [2021-10-28 22:50:22,266 INFO L793 eck$LassoCheckResult]: Loop: 1765#L99-1 assume !false;main_~cond~0 := main_#t~nondet13;havoc main_#t~nondet13; 1846#L31 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;main_~lk6~0 := 0; 1842#L48 assume !(0 != main_~p1~0); 1835#L48-2 assume !(0 != main_~p2~0); 1830#L52-1 assume !(0 != main_~p3~0); 1823#L56-1 assume !(0 != main_~p4~0); 1815#L60-1 assume !(0 != main_~p5~0); 1809#L64-1 assume !(0 != main_~p6~0); 1803#L68-1 assume !(0 != main_~p1~0); 1804#L74-1 assume !(0 != main_~p2~0); 1873#L79-1 assume !(0 != main_~p3~0); 1864#L84-1 assume !(0 != main_~p4~0); 1857#L89-1 assume !(0 != main_~p5~0); 1853#L94-1 assume !(0 != main_~p6~0); 1765#L99-1 [2021-10-28 22:50:22,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:22,267 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2021-10-28 22:50:22,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:22,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591534693] [2021-10-28 22:50:22,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:22,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:50:22,277 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:50:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:50:22,289 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:50:22,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:22,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1701518855, now seen corresponding path program 1 times [2021-10-28 22:50:22,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:22,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282259950] [2021-10-28 22:50:22,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:22,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:50:22,298 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:50:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:50:22,306 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:50:22,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:22,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1159342651, now seen corresponding path program 1 times [2021-10-28 22:50:22,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:22,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476907965] [2021-10-28 22:50:22,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:22,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:50:22,318 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:50:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:50:22,334 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:50:22,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 10:50:22 BoogieIcfgContainer [2021-10-28 22:50:22,904 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 22:50:22,904 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:50:22,904 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:50:22,905 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:50:22,905 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:50:21" (3/4) ... [2021-10-28 22:50:22,924 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 22:50:22,969 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad9031-2c7f-4a37-8bd5-35170280c408/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 22:50:22,969 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:50:22,971 INFO L168 Benchmark]: Toolchain (without parser) took 2804.04 ms. Allocated memory is still 138.4 MB. Free memory was 105.4 MB in the beginning and 73.4 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:50:22,971 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:50:22,972 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.57 ms. Allocated memory is still 138.4 MB. Free memory was 105.0 MB in the beginning and 113.4 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:50:22,972 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.65 ms. Allocated memory is still 138.4 MB. Free memory was 113.4 MB in the beginning and 111.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:50:22,973 INFO L168 Benchmark]: Boogie Preprocessor took 24.53 ms. Allocated memory is still 138.4 MB. Free memory was 111.8 MB in the beginning and 110.9 MB in the end (delta: 894.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:50:22,973 INFO L168 Benchmark]: RCFGBuilder took 481.83 ms. Allocated memory is still 138.4 MB. Free memory was 110.5 MB in the beginning and 100.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 22:50:22,974 INFO L168 Benchmark]: BuchiAutomizer took 1852.71 ms. Allocated memory is still 138.4 MB. Free memory was 100.0 MB in the beginning and 76.2 MB in the end (delta: 23.8 MB). Peak memory consumption was 26.9 MB. Max. memory is 16.1 GB. [2021-10-28 22:50:22,974 INFO L168 Benchmark]: Witness Printer took 65.09 ms. Allocated memory is still 138.4 MB. Free memory was 76.2 MB in the beginning and 73.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:50:22,977 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 92.3 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 332.57 ms. Allocated memory is still 138.4 MB. Free memory was 105.0 MB in the beginning and 113.4 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.65 ms. Allocated memory is still 138.4 MB. Free memory was 113.4 MB in the beginning and 111.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.53 ms. Allocated memory is still 138.4 MB. Free memory was 111.8 MB in the beginning and 110.9 MB in the end (delta: 894.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 481.83 ms. Allocated memory is still 138.4 MB. Free memory was 110.5 MB in the beginning and 100.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1852.71 ms. Allocated memory is still 138.4 MB. Free memory was 100.0 MB in the beginning and 76.2 MB in the end (delta: 23.8 MB). Peak memory consumption was 26.9 MB. Max. memory is 16.1 GB. * Witness Printer took 65.09 ms. Allocated memory is still 138.4 MB. Free memory was 76.2 MB in the beginning and 73.4 MB in the end (delta: 2.8 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 5 terminating modules (5 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.5 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 562 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 562 states and ocurred in iteration 5. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 256 SDtfs, 130 SDslu, 149 SDs, 0 SdLazy, 25 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI5 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: 29]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=28471} State at position 1 is {NULL=28474, NULL=0, p1=0, \result=0, p3=0, p2=0, p5=0, NULL=28471, p4=0, p6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7a32df90=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@38a721ac=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@729f9299=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@39446d6d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@55e6eb8a=0, cond=9, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@54cd1adb=0, NULL=28473, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5a484181=9, NULL=0, NULL=0, NULL=0, NULL=28472, lk3=0, lk4=0, lk5=0, lk6=0, NULL=0, lk1=0, lk2=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 29]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L27] int cond; Loop: [L29] COND TRUE 1 [L30] cond = __VERIFIER_nondet_int() [L31] COND FALSE !(cond == 0) [L34] lk1 = 0 [L36] lk2 = 0 [L38] lk3 = 0 [L40] lk4 = 0 [L42] lk5 = 0 [L44] lk6 = 0 [L48] COND FALSE !(p1 != 0) [L52] COND FALSE !(p2 != 0) [L56] COND FALSE !(p3 != 0) [L60] COND FALSE !(p4 != 0) [L64] COND FALSE !(p5 != 0) [L68] COND FALSE !(p6 != 0) [L74] COND FALSE !(p1 != 0) [L79] COND FALSE !(p2 != 0) [L84] COND FALSE !(p3 != 0) [L89] COND FALSE !(p4 != 0) [L94] COND FALSE !(p5 != 0) [L99] COND FALSE !(p6 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 22:50:23,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad9031-2c7f-4a37-8bd5-35170280c408/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...