./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 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba6e1f5-94e8-440f-8365-3a4547427676/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba6e1f5-94e8-440f-8365-3a4547427676/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba6e1f5-94e8-440f-8365-3a4547427676/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba6e1f5-94e8-440f-8365-3a4547427676/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba6e1f5-94e8-440f-8365-3a4547427676/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba6e1f5-94e8-440f-8365-3a4547427676/bin/uautomizer-WNIpwEf4Nt --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-4e77c04 [2021-10-13 01:18:35,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:18:35,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:18:35,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:18:35,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:18:35,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:18:35,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:18:35,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:18:35,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:18:35,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:18:35,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:18:35,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:18:35,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:18:35,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:18:35,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:18:35,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:18:35,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:18:35,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:18:35,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:18:35,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:18:35,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:18:35,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:18:35,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:18:35,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:18:35,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:18:35,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:18:35,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:18:35,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:18:35,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:18:35,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:18:35,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:18:35,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:18:35,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:18:35,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:18:35,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:18:35,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:18:35,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:18:35,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:18:35,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:18:35,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:18:35,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:18:35,641 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba6e1f5-94e8-440f-8365-3a4547427676/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-13 01:18:35,672 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:18:35,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:18:35,673 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:18:35,674 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:18:35,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:18:35,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:18:35,676 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:18:35,677 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 01:18:35,677 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 01:18:35,678 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 01:18:35,678 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 01:18:35,679 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 01:18:35,679 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 01:18:35,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:18:35,680 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:18:35,680 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:18:35,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:18:35,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:18:35,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:18:35,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 01:18:35,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 01:18:35,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 01:18:35,684 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:18:35,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:18:35,684 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 01:18:35,685 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:18:35,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 01:18:35,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:18:35,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:18:35,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:18:35,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:18:35,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:18:35,689 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 01:18:35,690 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_5ba6e1f5-94e8-440f-8365-3a4547427676/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba6e1f5-94e8-440f-8365-3a4547427676/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d28fd50bd3f7e49bee026aec860ad9015a4fdfba [2021-10-13 01:18:36,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:18:36,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:18:36,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:18:36,038 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:18:36,039 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:18:36,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba6e1f5-94e8-440f-8365-3a4547427676/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/locks/test_locks_5.c [2021-10-13 01:18:36,117 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba6e1f5-94e8-440f-8365-3a4547427676/bin/uautomizer-WNIpwEf4Nt/data/7b4fc2140/b2318d90e258417f9c8fd341d8d17c4a/FLAG3d0e6613b [2021-10-13 01:18:36,620 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:18:36,622 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba6e1f5-94e8-440f-8365-3a4547427676/sv-benchmarks/c/locks/test_locks_5.c [2021-10-13 01:18:36,635 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba6e1f5-94e8-440f-8365-3a4547427676/bin/uautomizer-WNIpwEf4Nt/data/7b4fc2140/b2318d90e258417f9c8fd341d8d17c4a/FLAG3d0e6613b [2021-10-13 01:18:36,960 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba6e1f5-94e8-440f-8365-3a4547427676/bin/uautomizer-WNIpwEf4Nt/data/7b4fc2140/b2318d90e258417f9c8fd341d8d17c4a [2021-10-13 01:18:36,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:18:36,965 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:18:36,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:18:36,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:18:36,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:18:36,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:18:36" (1/1) ... [2021-10-13 01:18:36,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5701ee3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:36, skipping insertion in model container [2021-10-13 01:18:36,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:18:36" (1/1) ... [2021-10-13 01:18:36,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:18:37,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:18:37,198 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_5ba6e1f5-94e8-440f-8365-3a4547427676/sv-benchmarks/c/locks/test_locks_5.c[2207,2220] [2021-10-13 01:18:37,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:18:37,211 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:18:37,232 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_5ba6e1f5-94e8-440f-8365-3a4547427676/sv-benchmarks/c/locks/test_locks_5.c[2207,2220] [2021-10-13 01:18:37,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:18:37,260 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:18:37,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:37 WrapperNode [2021-10-13 01:18:37,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:18:37,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:18:37,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:18:37,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:18:37,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:37" (1/1) ... [2021-10-13 01:18:37,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:37" (1/1) ... [2021-10-13 01:18:37,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:18:37,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:18:37,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:18:37,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:18:37,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:37" (1/1) ... [2021-10-13 01:18:37,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:37" (1/1) ... [2021-10-13 01:18:37,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:37" (1/1) ... [2021-10-13 01:18:37,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:37" (1/1) ... [2021-10-13 01:18:37,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:37" (1/1) ... [2021-10-13 01:18:37,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:37" (1/1) ... [2021-10-13 01:18:37,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:37" (1/1) ... [2021-10-13 01:18:37,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:18:37,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:18:37,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:18:37,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:18:37,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:37" (1/1) ... [2021-10-13 01:18:37,341 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:18:37,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba6e1f5-94e8-440f-8365-3a4547427676/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:18:37,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba6e1f5-94e8-440f-8365-3a4547427676/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:18:37,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba6e1f5-94e8-440f-8365-3a4547427676/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 01:18:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:18:37,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:18:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:18:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:18:37,710 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:18:37,717 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-13 01:18:37,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:18:37 BoogieIcfgContainer [2021-10-13 01:18:37,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:18:37,720 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 01:18:37,720 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 01:18:37,727 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 01:18:37,727 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:18:37,728 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 01:18:36" (1/3) ... [2021-10-13 01:18:37,729 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@63721e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 01:18:37, skipping insertion in model container [2021-10-13 01:18:37,729 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:18:37,730 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:37" (2/3) ... [2021-10-13 01:18:37,730 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@63721e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 01:18:37, skipping insertion in model container [2021-10-13 01:18:37,730 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:18:37,730 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:18:37" (3/3) ... [2021-10-13 01:18:37,731 INFO L389 chiAutomizerObserver]: Analyzing ICFG test_locks_5.c [2021-10-13 01:18:37,810 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 01:18:37,811 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 01:18:37,811 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 01:18:37,811 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 01:18:37,811 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 01:18:37,811 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 01:18:37,811 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 01:18:37,812 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 01:18:37,829 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) [2021-10-13 01:18:37,852 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2021-10-13 01:18:37,852 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:18:37,852 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:18:37,859 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 01:18:37,860 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:18:37,860 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 01:18:37,860 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) [2021-10-13 01:18:37,865 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2021-10-13 01:18:37,865 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:18:37,865 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:18:37,866 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 01:18:37,866 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:18:37,874 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 [2021-10-13 01:18:37,875 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 [2021-10-13 01:18:37,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:18:37,881 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-13 01:18:37,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:18:37,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532470180] [2021-10-13 01:18:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:18:37,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:18:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:18:38,045 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:18:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:18:38,118 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:18:38,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:18:38,126 INFO L82 PathProgramCache]: Analyzing trace with hash -2089480461, now seen corresponding path program 1 times [2021-10-13 01:18:38,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:18:38,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319589388] [2021-10-13 01:18:38,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:18:38,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:18:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:18:38,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:18:38,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:18:38,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319589388] [2021-10-13 01:18:38,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319589388] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:18:38,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:18:38,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:18:38,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957749928] [2021-10-13 01:18:38,290 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 01:18:38,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:18:38,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:18:38,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:18:38,310 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) [2021-10-13 01:18:38,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:18:38,341 INFO L93 Difference]: Finished difference Result 45 states and 70 transitions. [2021-10-13 01:18:38,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:18:38,343 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 70 transitions. [2021-10-13 01:18:38,347 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 33 [2021-10-13 01:18:38,352 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 35 states and 53 transitions. [2021-10-13 01:18:38,353 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2021-10-13 01:18:38,354 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-10-13 01:18:38,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 53 transitions. [2021-10-13 01:18:38,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 01:18:38,355 INFO L681 BuchiCegarLoop]: Abstraction has 35 states and 53 transitions. [2021-10-13 01:18:38,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 53 transitions. [2021-10-13 01:18:38,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-13 01:18:38,386 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) [2021-10-13 01:18:38,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 53 transitions. [2021-10-13 01:18:38,394 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 53 transitions. [2021-10-13 01:18:38,394 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 53 transitions. [2021-10-13 01:18:38,394 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-13 01:18:38,394 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 53 transitions. [2021-10-13 01:18:38,400 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 33 [2021-10-13 01:18:38,401 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:18:38,401 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:18:38,402 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 01:18:38,402 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:18:38,403 INFO L791 eck$LassoCheckResult]: Stem: 80#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 81#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;havoc main_~cond~0; 79#L85-1 [2021-10-13 01:18:38,404 INFO L793 eck$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 [2021-10-13 01:18:38,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:18:38,407 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-10-13 01:18:38,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:18:38,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751704900] [2021-10-13 01:18:38,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:18:38,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:18:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:18:38,442 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:18:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:18:38,479 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:18:38,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:18:38,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1812459825, now seen corresponding path program 1 times [2021-10-13 01:18:38,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:18:38,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367776076] [2021-10-13 01:18:38,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:18:38,483 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:18:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:18:38,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:18:38,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:18:38,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367776076] [2021-10-13 01:18:38,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367776076] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:18:38,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:18:38,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:18:38,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211253945] [2021-10-13 01:18:38,524 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 01:18:38,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:18:38,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:18:38,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:18:38,526 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) [2021-10-13 01:18:38,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:18:38,554 INFO L93 Difference]: Finished difference Result 66 states and 98 transitions. [2021-10-13 01:18:38,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:18:38,556 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 98 transitions. [2021-10-13 01:18:38,560 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 64 [2021-10-13 01:18:38,565 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 66 states and 98 transitions. [2021-10-13 01:18:38,567 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 66 [2021-10-13 01:18:38,568 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 66 [2021-10-13 01:18:38,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 98 transitions. [2021-10-13 01:18:38,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 01:18:38,570 INFO L681 BuchiCegarLoop]: Abstraction has 66 states and 98 transitions. [2021-10-13 01:18:38,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 98 transitions. [2021-10-13 01:18:38,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-10-13 01:18:38,581 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) [2021-10-13 01:18:38,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 98 transitions. [2021-10-13 01:18:38,586 INFO L704 BuchiCegarLoop]: Abstraction has 66 states and 98 transitions. [2021-10-13 01:18:38,586 INFO L587 BuchiCegarLoop]: Abstraction has 66 states and 98 transitions. [2021-10-13 01:18:38,586 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-13 01:18:38,587 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 98 transitions. [2021-10-13 01:18:38,591 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 64 [2021-10-13 01:18:38,595 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:18:38,595 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:18:38,596 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 01:18:38,597 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:18:38,598 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 [2021-10-13 01:18:38,598 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 [2021-10-13 01:18:38,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:18:38,601 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-10-13 01:18:38,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:18:38,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961770796] [2021-10-13 01:18:38,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:18:38,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:18:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:18:38,618 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:18:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:18:38,652 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:18:38,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:18:38,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1802449101, now seen corresponding path program 1 times [2021-10-13 01:18:38,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:18:38,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263254215] [2021-10-13 01:18:38,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:18:38,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:18:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:18:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:18:38,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:18:38,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263254215] [2021-10-13 01:18:38,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263254215] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:18:38,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:18:38,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:18:38,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800596073] [2021-10-13 01:18:38,699 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 01:18:38,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:18:38,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:18:38,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:18:38,700 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) [2021-10-13 01:18:38,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:18:38,734 INFO L93 Difference]: Finished difference Result 126 states and 182 transitions. [2021-10-13 01:18:38,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:18:38,735 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 182 transitions. [2021-10-13 01:18:38,744 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 124 [2021-10-13 01:18:38,748 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 126 states and 182 transitions. [2021-10-13 01:18:38,749 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 126 [2021-10-13 01:18:38,750 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 126 [2021-10-13 01:18:38,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 182 transitions. [2021-10-13 01:18:38,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 01:18:38,754 INFO L681 BuchiCegarLoop]: Abstraction has 126 states and 182 transitions. [2021-10-13 01:18:38,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states and 182 transitions. [2021-10-13 01:18:38,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-10-13 01:18:38,770 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) [2021-10-13 01:18:38,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 182 transitions. [2021-10-13 01:18:38,776 INFO L704 BuchiCegarLoop]: Abstraction has 126 states and 182 transitions. [2021-10-13 01:18:38,776 INFO L587 BuchiCegarLoop]: Abstraction has 126 states and 182 transitions. [2021-10-13 01:18:38,776 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-13 01:18:38,776 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 182 transitions. [2021-10-13 01:18:38,779 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 124 [2021-10-13 01:18:38,779 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:18:38,780 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:18:38,780 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 01:18:38,780 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:18:38,781 INFO L791 eck$LassoCheckResult]: Stem: 385#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 386#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;havoc main_~cond~0; 400#L85-1 [2021-10-13 01:18:38,781 INFO L793 eck$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 [2021-10-13 01:18:38,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:18:38,782 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-10-13 01:18:38,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:18:38,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712284779] [2021-10-13 01:18:38,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:18:38,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:18:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:18:38,808 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:18:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:18:38,835 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:18:38,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:18:38,836 INFO L82 PathProgramCache]: Analyzing trace with hash -27441739, now seen corresponding path program 1 times [2021-10-13 01:18:38,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:18:38,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522435460] [2021-10-13 01:18:38,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:18:38,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:18:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:18:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:18:38,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:18:38,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522435460] [2021-10-13 01:18:38,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522435460] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:18:38,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:18:38,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:18:38,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814997451] [2021-10-13 01:18:38,876 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 01:18:38,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:18:38,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:18:38,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:18:38,879 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) [2021-10-13 01:18:38,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:18:38,906 INFO L93 Difference]: Finished difference Result 242 states and 338 transitions. [2021-10-13 01:18:38,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:18:38,907 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 242 states and 338 transitions. [2021-10-13 01:18:38,910 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 240 [2021-10-13 01:18:38,914 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 242 states to 242 states and 338 transitions. [2021-10-13 01:18:38,914 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 242 [2021-10-13 01:18:38,916 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 242 [2021-10-13 01:18:38,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 242 states and 338 transitions. [2021-10-13 01:18:38,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 01:18:38,918 INFO L681 BuchiCegarLoop]: Abstraction has 242 states and 338 transitions. [2021-10-13 01:18:38,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states and 338 transitions. [2021-10-13 01:18:38,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-10-13 01:18:38,939 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) [2021-10-13 01:18:38,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 338 transitions. [2021-10-13 01:18:38,941 INFO L704 BuchiCegarLoop]: Abstraction has 242 states and 338 transitions. [2021-10-13 01:18:38,941 INFO L587 BuchiCegarLoop]: Abstraction has 242 states and 338 transitions. [2021-10-13 01:18:38,941 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-13 01:18:38,941 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 242 states and 338 transitions. [2021-10-13 01:18:38,943 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 240 [2021-10-13 01:18:38,944 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:18:38,944 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:18:38,944 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 01:18:38,945 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:18:38,945 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 [2021-10-13 01:18:38,945 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 [2021-10-13 01:18:38,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:18:38,946 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-10-13 01:18:38,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:18:38,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821595324] [2021-10-13 01:18:38,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:18:38,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:18:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:18:38,956 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:18:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:18:38,967 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:18:38,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:18:38,968 INFO L82 PathProgramCache]: Analyzing trace with hash 29816563, now seen corresponding path program 1 times [2021-10-13 01:18:38,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:18:38,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425725425] [2021-10-13 01:18:38,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:18:38,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:18:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:18:38,973 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:18:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:18:38,980 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:18:38,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:18:38,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1243965365, now seen corresponding path program 1 times [2021-10-13 01:18:38,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:18:38,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55314088] [2021-10-13 01:18:38,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:18:38,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:18:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:18:38,992 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:18:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:18:39,006 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:18:39,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 01:18:39 BoogieIcfgContainer [2021-10-13 01:18:39,661 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-13 01:18:39,662 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:18:39,662 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:18:39,662 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:18:39,663 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:18:37" (3/4) ... [2021-10-13 01:18:39,666 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-13 01:18:39,724 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba6e1f5-94e8-440f-8365-3a4547427676/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:18:39,729 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:18:39,731 INFO L168 Benchmark]: Toolchain (without parser) took 2764.84 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 50.5 MB in the beginning and 66.7 MB in the end (delta: -16.2 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:18:39,732 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory is still 67.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:18:39,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.44 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 50.3 MB in the beginning and 89.0 MB in the end (delta: -38.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:18:39,735 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.16 ms. Allocated memory is still 113.2 MB. Free memory was 89.0 MB in the beginning and 87.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:18:39,736 INFO L168 Benchmark]: Boogie Preprocessor took 28.19 ms. Allocated memory is still 113.2 MB. Free memory was 87.4 MB in the beginning and 86.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:18:39,736 INFO L168 Benchmark]: RCFGBuilder took 389.15 ms. Allocated memory is still 113.2 MB. Free memory was 86.2 MB in the beginning and 76.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:18:39,737 INFO L168 Benchmark]: BuchiAutomizer took 1940.75 ms. Allocated memory is still 113.2 MB. Free memory was 75.9 MB in the beginning and 69.1 MB in the end (delta: 6.8 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. [2021-10-13 01:18:39,737 INFO L168 Benchmark]: Witness Printer took 67.49 ms. Allocated memory is still 113.2 MB. Free memory was 69.1 MB in the beginning and 66.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:18:39,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory is still 67.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 294.44 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 50.3 MB in the beginning and 89.0 MB in the end (delta: -38.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.16 ms. Allocated memory is still 113.2 MB. Free memory was 89.0 MB in the beginning and 87.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.19 ms. Allocated memory is still 113.2 MB. Free memory was 87.4 MB in the beginning and 86.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 389.15 ms. Allocated memory is still 113.2 MB. Free memory was 86.2 MB in the beginning and 76.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1940.75 ms. Allocated memory is still 113.2 MB. Free memory was 75.9 MB in the beginning and 69.1 MB in the end (delta: 6.8 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. * Witness Printer took 67.49 ms. Allocated memory is still 113.2 MB. Free memory was 69.1 MB in the beginning and 66.7 MB in the end (delta: 2.4 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 1.8s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 82.4ms 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, 40.6ms 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@318c9b31=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@354a0a85=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3365d71=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22b0fc36=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@77b0be42=0, cond=11, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@124b8c13=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! [2021-10-13 01:18:39,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba6e1f5-94e8-440f-8365-3a4547427676/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...