./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_9.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcc301c-9b14-40b1-9dd9-d27a2f5c8fcb/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcc301c-9b14-40b1-9dd9-d27a2f5c8fcb/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcc301c-9b14-40b1-9dd9-d27a2f5c8fcb/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcc301c-9b14-40b1-9dd9-d27a2f5c8fcb/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_9.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcc301c-9b14-40b1-9dd9-d27a2f5c8fcb/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcc301c-9b14-40b1-9dd9-d27a2f5c8fcb/bin/uautomizer-j4sWxH34Be --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 04dc39fb366d4472036345a213cca0ee8b355c41bc9af7e685ecaa2d36ed9484 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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-e943c26 [2021-10-21 19:01:06,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:01:06,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:01:06,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:01:06,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:01:06,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:01:06,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:01:06,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:01:06,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:01:06,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:01:06,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:01:06,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:01:06,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:01:06,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:01:06,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:01:06,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:01:06,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:01:06,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:01:06,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:01:06,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:01:06,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:01:06,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:01:06,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:01:06,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:01:06,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:01:06,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:01:06,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:01:06,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:01:06,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:01:06,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:01:06,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:01:06,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:01:06,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:01:06,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:01:06,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:01:06,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:01:06,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:01:06,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:01:06,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:01:06,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:01:06,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:01:06,878 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcc301c-9b14-40b1-9dd9-d27a2f5c8fcb/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 19:01:06,930 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:01:06,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:01:06,933 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:01:06,933 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:01:06,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:01:06,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:01:06,935 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:01:06,935 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:01:06,935 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:01:06,936 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:01:06,937 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:01:06,937 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:01:06,937 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:01:06,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:01:06,938 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:01:06,938 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:01:06,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:01:06,939 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:01:06,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:01:06,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:01:06,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:01:06,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:01:06,940 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:01:06,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:01:06,940 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:01:06,940 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:01:06,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:01:06,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:01:06,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:01:06,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:01:06,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:01:06,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:01:06,946 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:01:06,947 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_dfcc301c-9b14-40b1-9dd9-d27a2f5c8fcb/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcc301c-9b14-40b1-9dd9-d27a2f5c8fcb/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04dc39fb366d4472036345a213cca0ee8b355c41bc9af7e685ecaa2d36ed9484 [2021-10-21 19:01:07,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:01:07,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:01:07,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:01:07,291 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:01:07,292 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:01:07,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcc301c-9b14-40b1-9dd9-d27a2f5c8fcb/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/locks/test_locks_9.c [2021-10-21 19:01:07,387 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcc301c-9b14-40b1-9dd9-d27a2f5c8fcb/bin/uautomizer-j4sWxH34Be/data/0751716b6/14f91674cdeb4db2b327fa2bc505f675/FLAG920981242 [2021-10-21 19:01:07,827 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:01:07,828 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcc301c-9b14-40b1-9dd9-d27a2f5c8fcb/sv-benchmarks/c/locks/test_locks_9.c [2021-10-21 19:01:07,834 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcc301c-9b14-40b1-9dd9-d27a2f5c8fcb/bin/uautomizer-j4sWxH34Be/data/0751716b6/14f91674cdeb4db2b327fa2bc505f675/FLAG920981242 [2021-10-21 19:01:08,234 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcc301c-9b14-40b1-9dd9-d27a2f5c8fcb/bin/uautomizer-j4sWxH34Be/data/0751716b6/14f91674cdeb4db2b327fa2bc505f675 [2021-10-21 19:01:08,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:01:08,238 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:01:08,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:01:08,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:01:08,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:01:08,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:01:08" (1/1) ... [2021-10-21 19:01:08,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@460e64c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:01:08, skipping insertion in model container [2021-10-21 19:01:08,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:01:08" (1/1) ... [2021-10-21 19:01:08,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:01:08,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:01:08,447 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_dfcc301c-9b14-40b1-9dd9-d27a2f5c8fcb/sv-benchmarks/c/locks/test_locks_9.c[3555,3568] [2021-10-21 19:01:08,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:01:08,462 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:01:08,482 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_dfcc301c-9b14-40b1-9dd9-d27a2f5c8fcb/sv-benchmarks/c/locks/test_locks_9.c[3555,3568] [2021-10-21 19:01:08,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:01:08,494 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:01:08,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:01:08 WrapperNode [2021-10-21 19:01:08,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:01:08,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:01:08,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:01:08,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:01:08,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:01:08" (1/1) ... [2021-10-21 19:01:08,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:01:08" (1/1) ... [2021-10-21 19:01:08,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:01:08,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:01:08,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:01:08,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:01:08,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:01:08" (1/1) ... [2021-10-21 19:01:08,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:01:08" (1/1) ... [2021-10-21 19:01:08,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:01:08" (1/1) ... [2021-10-21 19:01:08,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:01:08" (1/1) ... [2021-10-21 19:01:08,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:01:08" (1/1) ... [2021-10-21 19:01:08,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:01:08" (1/1) ... [2021-10-21 19:01:08,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:01:08" (1/1) ... [2021-10-21 19:01:08,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:01:08,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:01:08,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:01:08,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:01:08,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:01:08" (1/1) ... [2021-10-21 19:01:08,569 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:01:08,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcc301c-9b14-40b1-9dd9-d27a2f5c8fcb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:01:08,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcc301c-9b14-40b1-9dd9-d27a2f5c8fcb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:01:08,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcc301c-9b14-40b1-9dd9-d27a2f5c8fcb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:01:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:01:08,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:01:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:01:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:01:08,947 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:01:08,947 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-21 19:01:08,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:01:08 BoogieIcfgContainer [2021-10-21 19:01:08,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:01:08,951 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:01:08,951 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:01:08,954 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:01:08,955 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:01:08,955 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:01:08" (1/3) ... [2021-10-21 19:01:08,956 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@226b06ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:01:08, skipping insertion in model container [2021-10-21 19:01:08,956 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:01:08,957 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:01:08" (2/3) ... [2021-10-21 19:01:08,957 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@226b06ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:01:08, skipping insertion in model container [2021-10-21 19:01:08,957 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:01:08,957 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:01:08" (3/3) ... [2021-10-21 19:01:08,959 INFO L389 chiAutomizerObserver]: Analyzing ICFG test_locks_9.c [2021-10-21 19:01:09,004 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:01:09,004 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:01:09,004 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:01:09,004 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:01:09,005 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:01:09,005 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:01:09,005 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:01:09,005 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:01:09,034 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 36 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 35 states have internal predecessors, (65), 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) [2021-10-21 19:01:09,063 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 29 [2021-10-21 19:01:09,063 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:01:09,063 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:01:09,070 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:01:09,070 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:01:09,070 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:01:09,071 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 36 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 35 states have internal predecessors, (65), 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) [2021-10-21 19:01:09,087 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 29 [2021-10-21 19:01:09,087 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:01:09,087 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:01:09,088 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:01:09,089 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:01:09,112 INFO L791 eck$LassoCheckResult]: Stem: 19#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); 8#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_#t~nondet14, main_#t~nondet15, main_#t~nondet16, 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_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, 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;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;havoc main_~cond~0; 14#L141-1true [2021-10-21 19:01:09,113 INFO L793 eck$LassoCheckResult]: Loop: 14#L141-1true assume !false;main_~cond~0 := main_#t~nondet16;havoc main_#t~nondet16; 36#L40true 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;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0; 4#L63true assume 0 != main_~p1~0;main_~lk1~0 := 1; 21#L63-2true assume 0 != main_~p2~0;main_~lk2~0 := 1; 28#L67-1true assume !(0 != main_~p3~0); 25#L71-1true assume 0 != main_~p4~0;main_~lk4~0 := 1; 29#L75-1true assume 0 != main_~p5~0;main_~lk5~0 := 1; 15#L79-1true assume 0 != main_~p6~0;main_~lk6~0 := 1; 37#L83-1true assume 0 != main_~p7~0;main_~lk7~0 := 1; 10#L87-1true assume 0 != main_~p8~0;main_~lk8~0 := 1; 5#L91-1true assume 0 != main_~p9~0;main_~lk9~0 := 1; 34#L95-1true assume !(0 != main_~p1~0); 23#L101-1true assume !(0 != main_~p2~0); 11#L106-1true assume !(0 != main_~p3~0); 12#L111-1true assume !(0 != main_~p4~0); 33#L116-1true assume !(0 != main_~p5~0); 6#L121-1true assume !(0 != main_~p6~0); 18#L126-1true assume !(0 != main_~p7~0); 30#L131-1true assume !(0 != main_~p8~0); 20#L136-1true assume !(0 != main_~p9~0); 14#L141-1true [2021-10-21 19:01:09,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:01:09,119 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-21 19:01:09,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:01:09,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898393608] [2021-10-21 19:01:09,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:01:09,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:01:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:01:09,244 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:01:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:01:09,301 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:01:09,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:01:09,307 INFO L82 PathProgramCache]: Analyzing trace with hash 694706197, now seen corresponding path program 1 times [2021-10-21 19:01:09,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:01:09,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203018194] [2021-10-21 19:01:09,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:01:09,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:01:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:01:09,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:01:09,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:01:09,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203018194] [2021-10-21 19:01:09,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203018194] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:01:09,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:01:09,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:01:09,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243478747] [2021-10-21 19:01:09,451 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:01:09,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:01:09,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:01:09,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:01:09,474 INFO L87 Difference]: Start difference. First operand has 36 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 35 states have internal predecessors, (65), 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 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-10-21 19:01:09,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:01:09,535 INFO L93 Difference]: Finished difference Result 69 states and 118 transitions. [2021-10-21 19:01:09,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:01:09,539 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 118 transitions. [2021-10-21 19:01:09,548 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 57 [2021-10-21 19:01:09,553 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 59 states and 93 transitions. [2021-10-21 19:01:09,554 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 59 [2021-10-21 19:01:09,555 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2021-10-21 19:01:09,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 93 transitions. [2021-10-21 19:01:09,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:01:09,556 INFO L681 BuchiCegarLoop]: Abstraction has 59 states and 93 transitions. [2021-10-21 19:01:09,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 93 transitions. [2021-10-21 19:01:09,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-10-21 19:01:09,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 59 states have (on average 1.576271186440678) internal successors, (93), 58 states have internal predecessors, (93), 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) [2021-10-21 19:01:09,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 93 transitions. [2021-10-21 19:01:09,596 INFO L704 BuchiCegarLoop]: Abstraction has 59 states and 93 transitions. [2021-10-21 19:01:09,596 INFO L587 BuchiCegarLoop]: Abstraction has 59 states and 93 transitions. [2021-10-21 19:01:09,596 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:01:09,597 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 59 states and 93 transitions. [2021-10-21 19:01:09,602 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 57 [2021-10-21 19:01:09,602 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:01:09,602 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:01:09,603 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:01:09,603 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:01:09,604 INFO L791 eck$LassoCheckResult]: Stem: 138#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 123#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;havoc main_~cond~0; 124#L141-1 [2021-10-21 19:01:09,605 INFO L793 eck$LassoCheckResult]: Loop: 124#L141-1 assume !false;main_~cond~0 := main_#t~nondet16;havoc main_#t~nondet16; 131#L40 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;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0; 158#L63 assume !(0 != main_~p1~0); 157#L63-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 146#L67-1 assume !(0 != main_~p3~0); 147#L71-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 148#L75-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 132#L79-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 133#L83-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 125#L87-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 116#L91-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 117#L95-1 assume !(0 != main_~p1~0); 142#L101-1 assume !(0 != main_~p2~0); 126#L106-1 assume !(0 != main_~p3~0); 127#L111-1 assume !(0 != main_~p4~0); 122#L116-1 assume !(0 != main_~p5~0); 118#L121-1 assume !(0 != main_~p6~0); 120#L126-1 assume !(0 != main_~p7~0); 162#L131-1 assume !(0 != main_~p8~0); 139#L136-1 assume !(0 != main_~p9~0); 124#L141-1 [2021-10-21 19:01:09,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:01:09,608 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-10-21 19:01:09,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:01:09,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071525985] [2021-10-21 19:01:09,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:01:09,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:01:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:01:09,643 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:01:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:01:09,670 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:01:09,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:01:09,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1299438509, now seen corresponding path program 1 times [2021-10-21 19:01:09,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:01:09,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184180506] [2021-10-21 19:01:09,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:01:09,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:01:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:01:09,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:01:09,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:01:09,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184180506] [2021-10-21 19:01:09,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184180506] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:01:09,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:01:09,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:01:09,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372761618] [2021-10-21 19:01:09,732 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:01:09,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:01:09,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:01:09,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:01:09,737 INFO L87 Difference]: Start difference. First operand 59 states and 93 transitions. cyclomatic complexity: 36 Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-10-21 19:01:09,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:01:09,758 INFO L93 Difference]: Finished difference Result 114 states and 178 transitions. [2021-10-21 19:01:09,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:01:09,759 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 114 states and 178 transitions. [2021-10-21 19:01:09,762 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 112 [2021-10-21 19:01:09,764 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 114 states to 114 states and 178 transitions. [2021-10-21 19:01:09,764 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 114 [2021-10-21 19:01:09,765 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 114 [2021-10-21 19:01:09,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 178 transitions. [2021-10-21 19:01:09,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:01:09,788 INFO L681 BuchiCegarLoop]: Abstraction has 114 states and 178 transitions. [2021-10-21 19:01:09,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states and 178 transitions. [2021-10-21 19:01:09,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-10-21 19:01:09,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 114 states have (on average 1.5614035087719298) internal successors, (178), 113 states have internal predecessors, (178), 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) [2021-10-21 19:01:09,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 178 transitions. [2021-10-21 19:01:09,799 INFO L704 BuchiCegarLoop]: Abstraction has 114 states and 178 transitions. [2021-10-21 19:01:09,799 INFO L587 BuchiCegarLoop]: Abstraction has 114 states and 178 transitions. [2021-10-21 19:01:09,799 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:01:09,799 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 114 states and 178 transitions. [2021-10-21 19:01:09,801 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 112 [2021-10-21 19:01:09,801 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:01:09,801 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:01:09,802 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:01:09,802 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:01:09,802 INFO L791 eck$LassoCheckResult]: Stem: 321#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); 302#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_#t~nondet14, main_#t~nondet15, main_#t~nondet16, 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_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, 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;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;havoc main_~cond~0; 303#L141-1 [2021-10-21 19:01:09,802 INFO L793 eck$LassoCheckResult]: Loop: 303#L141-1 assume !false;main_~cond~0 := main_#t~nondet16;havoc main_#t~nondet16; 339#L40 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;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0; 336#L63 assume !(0 != main_~p1~0); 337#L63-2 assume !(0 != main_~p2~0); 379#L67-1 assume !(0 != main_~p3~0); 378#L71-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 377#L75-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 376#L79-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 375#L83-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 374#L87-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 373#L91-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 372#L95-1 assume !(0 != main_~p1~0); 371#L101-1 assume !(0 != main_~p2~0); 368#L106-1 assume !(0 != main_~p3~0); 363#L111-1 assume !(0 != main_~p4~0); 360#L116-1 assume !(0 != main_~p5~0); 356#L121-1 assume !(0 != main_~p6~0); 352#L126-1 assume !(0 != main_~p7~0); 348#L131-1 assume !(0 != main_~p8~0); 344#L136-1 assume !(0 != main_~p9~0); 303#L141-1 [2021-10-21 19:01:09,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:01:09,803 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-10-21 19:01:09,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:01:09,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012358954] [2021-10-21 19:01:09,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:01:09,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:01:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:01:09,814 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:01:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:01:09,827 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:01:09,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:01:09,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1407180885, now seen corresponding path program 1 times [2021-10-21 19:01:09,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:01:09,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822948659] [2021-10-21 19:01:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:01:09,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:01:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:01:09,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:01:09,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:01:09,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822948659] [2021-10-21 19:01:09,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822948659] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:01:09,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:01:09,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:01:09,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386482764] [2021-10-21 19:01:09,864 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:01:09,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:01:09,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:01:09,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:01:09,865 INFO L87 Difference]: Start difference. First operand 114 states and 178 transitions. cyclomatic complexity: 68 Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-10-21 19:01:09,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:01:09,900 INFO L93 Difference]: Finished difference Result 222 states and 342 transitions. [2021-10-21 19:01:09,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:01:09,901 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 222 states and 342 transitions. [2021-10-21 19:01:09,904 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 220 [2021-10-21 19:01:09,907 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 222 states to 222 states and 342 transitions. [2021-10-21 19:01:09,907 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 222 [2021-10-21 19:01:09,908 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 222 [2021-10-21 19:01:09,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 222 states and 342 transitions. [2021-10-21 19:01:09,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:01:09,910 INFO L681 BuchiCegarLoop]: Abstraction has 222 states and 342 transitions. [2021-10-21 19:01:09,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states and 342 transitions. [2021-10-21 19:01:09,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-10-21 19:01:09,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 222 states have (on average 1.5405405405405406) internal successors, (342), 221 states have internal predecessors, (342), 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) [2021-10-21 19:01:09,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 342 transitions. [2021-10-21 19:01:09,937 INFO L704 BuchiCegarLoop]: Abstraction has 222 states and 342 transitions. [2021-10-21 19:01:09,937 INFO L587 BuchiCegarLoop]: Abstraction has 222 states and 342 transitions. [2021-10-21 19:01:09,937 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:01:09,938 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 222 states and 342 transitions. [2021-10-21 19:01:09,939 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 220 [2021-10-21 19:01:09,939 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:01:09,940 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:01:09,940 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:01:09,940 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:01:09,940 INFO L791 eck$LassoCheckResult]: Stem: 662#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 644#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;havoc main_~cond~0; 645#L141-1 [2021-10-21 19:01:09,941 INFO L793 eck$LassoCheckResult]: Loop: 645#L141-1 assume !false;main_~cond~0 := main_#t~nondet16;havoc main_#t~nondet16; 709#L40 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;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0; 706#L63 assume !(0 != main_~p1~0); 703#L63-2 assume !(0 != main_~p2~0); 701#L67-1 assume !(0 != main_~p3~0); 698#L71-1 assume !(0 != main_~p4~0); 696#L75-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 694#L79-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 692#L83-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 690#L87-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 688#L91-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 685#L95-1 assume !(0 != main_~p1~0); 686#L101-1 assume !(0 != main_~p2~0); 734#L106-1 assume !(0 != main_~p3~0); 729#L111-1 assume !(0 != main_~p4~0); 728#L116-1 assume !(0 != main_~p5~0); 724#L121-1 assume !(0 != main_~p6~0); 720#L126-1 assume !(0 != main_~p7~0); 716#L131-1 assume !(0 != main_~p8~0); 713#L136-1 assume !(0 != main_~p9~0); 645#L141-1 [2021-10-21 19:01:09,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:01:09,941 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-10-21 19:01:09,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:01:09,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243750625] [2021-10-21 19:01:09,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:01:09,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:01:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:01:09,951 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:01:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:01:09,963 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:01:09,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:01:09,964 INFO L82 PathProgramCache]: Analyzing trace with hash 127317207, now seen corresponding path program 1 times [2021-10-21 19:01:09,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:01:09,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822677602] [2021-10-21 19:01:09,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:01:09,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:01:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:01:09,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:01:09,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:01:09,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822677602] [2021-10-21 19:01:09,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822677602] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:01:09,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:01:09,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:01:09,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360182556] [2021-10-21 19:01:09,991 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:01:09,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:01:09,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:01:09,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:01:09,992 INFO L87 Difference]: Start difference. First operand 222 states and 342 transitions. cyclomatic complexity: 128 Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-10-21 19:01:10,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:01:10,008 INFO L93 Difference]: Finished difference Result 434 states and 658 transitions. [2021-10-21 19:01:10,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:01:10,009 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 434 states and 658 transitions. [2021-10-21 19:01:10,013 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 432 [2021-10-21 19:01:10,018 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 434 states to 434 states and 658 transitions. [2021-10-21 19:01:10,018 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 434 [2021-10-21 19:01:10,019 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 434 [2021-10-21 19:01:10,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 434 states and 658 transitions. [2021-10-21 19:01:10,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:01:10,023 INFO L681 BuchiCegarLoop]: Abstraction has 434 states and 658 transitions. [2021-10-21 19:01:10,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states and 658 transitions. [2021-10-21 19:01:10,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2021-10-21 19:01:10,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 434 states have (on average 1.5161290322580645) internal successors, (658), 433 states have internal predecessors, (658), 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) [2021-10-21 19:01:10,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 658 transitions. [2021-10-21 19:01:10,058 INFO L704 BuchiCegarLoop]: Abstraction has 434 states and 658 transitions. [2021-10-21 19:01:10,058 INFO L587 BuchiCegarLoop]: Abstraction has 434 states and 658 transitions. [2021-10-21 19:01:10,058 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-21 19:01:10,058 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 434 states and 658 transitions. [2021-10-21 19:01:10,061 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 432 [2021-10-21 19:01:10,061 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:01:10,062 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:01:10,062 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:01:10,062 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:01:10,062 INFO L791 eck$LassoCheckResult]: Stem: 1324#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); 1306#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_#t~nondet14, main_#t~nondet15, main_#t~nondet16, 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_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, 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;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;havoc main_~cond~0; 1307#L141-1 [2021-10-21 19:01:10,063 INFO L793 eck$LassoCheckResult]: Loop: 1307#L141-1 assume !false;main_~cond~0 := main_#t~nondet16;havoc main_#t~nondet16; 1355#L40 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;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0; 1356#L63 assume !(0 != main_~p1~0); 1456#L63-2 assume !(0 != main_~p2~0); 1455#L67-1 assume !(0 != main_~p3~0); 1449#L71-1 assume !(0 != main_~p4~0); 1443#L75-1 assume !(0 != main_~p5~0); 1439#L79-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 1435#L83-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 1431#L87-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 1427#L91-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 1404#L95-1 assume !(0 != main_~p1~0); 1405#L101-1 assume !(0 != main_~p2~0); 1418#L106-1 assume !(0 != main_~p3~0); 1414#L111-1 assume !(0 != main_~p4~0); 1411#L116-1 assume !(0 != main_~p5~0); 1412#L121-1 assume !(0 != main_~p6~0); 1469#L126-1 assume !(0 != main_~p7~0); 1379#L131-1 assume !(0 != main_~p8~0); 1378#L136-1 assume !(0 != main_~p9~0); 1307#L141-1 [2021-10-21 19:01:10,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:01:10,063 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-10-21 19:01:10,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:01:10,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136358747] [2021-10-21 19:01:10,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:01:10,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:01:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:01:10,072 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:01:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:01:10,098 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:01:10,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:01:10,099 INFO L82 PathProgramCache]: Analyzing trace with hash -883800043, now seen corresponding path program 1 times [2021-10-21 19:01:10,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:01:10,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198550369] [2021-10-21 19:01:10,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:01:10,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:01:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:01:10,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:01:10,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:01:10,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198550369] [2021-10-21 19:01:10,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198550369] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:01:10,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:01:10,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:01:10,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534935924] [2021-10-21 19:01:10,138 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:01:10,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:01:10,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:01:10,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:01:10,139 INFO L87 Difference]: Start difference. First operand 434 states and 658 transitions. cyclomatic complexity: 240 Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-10-21 19:01:10,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:01:10,160 INFO L93 Difference]: Finished difference Result 850 states and 1266 transitions. [2021-10-21 19:01:10,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:01:10,160 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 850 states and 1266 transitions. [2021-10-21 19:01:10,169 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 848 [2021-10-21 19:01:10,177 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 850 states to 850 states and 1266 transitions. [2021-10-21 19:01:10,177 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 850 [2021-10-21 19:01:10,179 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 850 [2021-10-21 19:01:10,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 850 states and 1266 transitions. [2021-10-21 19:01:10,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:01:10,183 INFO L681 BuchiCegarLoop]: Abstraction has 850 states and 1266 transitions. [2021-10-21 19:01:10,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states and 1266 transitions. [2021-10-21 19:01:10,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 850. [2021-10-21 19:01:10,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 850 states have (on average 1.4894117647058824) internal successors, (1266), 849 states have internal predecessors, (1266), 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) [2021-10-21 19:01:10,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1266 transitions. [2021-10-21 19:01:10,213 INFO L704 BuchiCegarLoop]: Abstraction has 850 states and 1266 transitions. [2021-10-21 19:01:10,213 INFO L587 BuchiCegarLoop]: Abstraction has 850 states and 1266 transitions. [2021-10-21 19:01:10,213 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-21 19:01:10,214 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 850 states and 1266 transitions. [2021-10-21 19:01:10,219 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 848 [2021-10-21 19:01:10,219 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:01:10,220 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:01:10,220 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:01:10,220 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:01:10,220 INFO L791 eck$LassoCheckResult]: Stem: 2614#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2595#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;havoc main_~cond~0; 2596#L141-1 [2021-10-21 19:01:10,221 INFO L793 eck$LassoCheckResult]: Loop: 2596#L141-1 assume !false;main_~cond~0 := main_#t~nondet16;havoc main_#t~nondet16; 2768#L40 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;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0; 2766#L63 assume !(0 != main_~p1~0); 2762#L63-2 assume !(0 != main_~p2~0); 2763#L67-1 assume !(0 != main_~p3~0); 2746#L71-1 assume !(0 != main_~p4~0); 2748#L75-1 assume !(0 != main_~p5~0); 2735#L79-1 assume !(0 != main_~p6~0); 2736#L83-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 2723#L87-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 2724#L91-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 2706#L95-1 assume !(0 != main_~p1~0); 2707#L101-1 assume !(0 != main_~p2~0); 2789#L106-1 assume !(0 != main_~p3~0); 2786#L111-1 assume !(0 != main_~p4~0); 2784#L116-1 assume !(0 != main_~p5~0); 2782#L121-1 assume !(0 != main_~p6~0); 2781#L126-1 assume !(0 != main_~p7~0); 2777#L131-1 assume !(0 != main_~p8~0); 2773#L136-1 assume !(0 != main_~p9~0); 2596#L141-1 [2021-10-21 19:01:10,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:01:10,221 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2021-10-21 19:01:10,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:01:10,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425502644] [2021-10-21 19:01:10,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:01:10,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:01:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:01:10,230 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:01:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:01:10,240 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:01:10,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:01:10,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1470606057, now seen corresponding path program 1 times [2021-10-21 19:01:10,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:01:10,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466556498] [2021-10-21 19:01:10,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:01:10,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:01:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:01:10,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:01:10,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:01:10,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466556498] [2021-10-21 19:01:10,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466556498] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:01:10,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:01:10,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:01:10,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080051735] [2021-10-21 19:01:10,275 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:01:10,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:01:10,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:01:10,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:01:10,276 INFO L87 Difference]: Start difference. First operand 850 states and 1266 transitions. cyclomatic complexity: 448 Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-10-21 19:01:10,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:01:10,306 INFO L93 Difference]: Finished difference Result 1666 states and 2434 transitions. [2021-10-21 19:01:10,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:01:10,307 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1666 states and 2434 transitions. [2021-10-21 19:01:10,365 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 1664 [2021-10-21 19:01:10,382 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1666 states to 1666 states and 2434 transitions. [2021-10-21 19:01:10,383 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1666 [2021-10-21 19:01:10,384 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1666 [2021-10-21 19:01:10,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1666 states and 2434 transitions. [2021-10-21 19:01:10,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:01:10,387 INFO L681 BuchiCegarLoop]: Abstraction has 1666 states and 2434 transitions. [2021-10-21 19:01:10,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states and 2434 transitions. [2021-10-21 19:01:10,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1666. [2021-10-21 19:01:10,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1666 states have (on average 1.460984393757503) internal successors, (2434), 1665 states have internal predecessors, (2434), 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) [2021-10-21 19:01:10,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 2434 transitions. [2021-10-21 19:01:10,428 INFO L704 BuchiCegarLoop]: Abstraction has 1666 states and 2434 transitions. [2021-10-21 19:01:10,429 INFO L587 BuchiCegarLoop]: Abstraction has 1666 states and 2434 transitions. [2021-10-21 19:01:10,429 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-21 19:01:10,429 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1666 states and 2434 transitions. [2021-10-21 19:01:10,446 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 1664 [2021-10-21 19:01:10,446 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:01:10,446 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:01:10,447 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:01:10,447 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:01:10,448 INFO L791 eck$LassoCheckResult]: Stem: 5137#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); 5117#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_#t~nondet14, main_#t~nondet15, main_#t~nondet16, 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_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, 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;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;havoc main_~cond~0; 5118#L141-1 [2021-10-21 19:01:10,449 INFO L793 eck$LassoCheckResult]: Loop: 5118#L141-1 assume !false;main_~cond~0 := main_#t~nondet16;havoc main_#t~nondet16; 5213#L40 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;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0; 5210#L63 assume !(0 != main_~p1~0); 5207#L63-2 assume !(0 != main_~p2~0); 5204#L67-1 assume !(0 != main_~p3~0); 5200#L71-1 assume !(0 != main_~p4~0); 5196#L75-1 assume !(0 != main_~p5~0); 5192#L79-1 assume !(0 != main_~p6~0); 5189#L83-1 assume !(0 != main_~p7~0); 5187#L87-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 5185#L91-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 5182#L95-1 assume !(0 != main_~p1~0); 5183#L101-1 assume !(0 != main_~p2~0); 5240#L106-1 assume !(0 != main_~p3~0); 5235#L111-1 assume !(0 != main_~p4~0); 5231#L116-1 assume !(0 != main_~p5~0); 5227#L121-1 assume !(0 != main_~p6~0); 5223#L126-1 assume !(0 != main_~p7~0); 5220#L131-1 assume !(0 != main_~p8~0); 5217#L136-1 assume !(0 != main_~p9~0); 5118#L141-1 [2021-10-21 19:01:10,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:01:10,453 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2021-10-21 19:01:10,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:01:10,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725779736] [2021-10-21 19:01:10,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:01:10,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:01:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:01:10,474 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:01:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:01:10,494 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:01:10,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:01:10,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1212440619, now seen corresponding path program 1 times [2021-10-21 19:01:10,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:01:10,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569487223] [2021-10-21 19:01:10,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:01:10,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:01:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:01:10,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:01:10,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:01:10,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569487223] [2021-10-21 19:01:10,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569487223] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:01:10,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:01:10,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:01:10,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705765066] [2021-10-21 19:01:10,534 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:01:10,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:01:10,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:01:10,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:01:10,536 INFO L87 Difference]: Start difference. First operand 1666 states and 2434 transitions. cyclomatic complexity: 832 Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-10-21 19:01:10,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:01:10,581 INFO L93 Difference]: Finished difference Result 3266 states and 4674 transitions. [2021-10-21 19:01:10,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:01:10,582 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 3266 states and 4674 transitions. [2021-10-21 19:01:10,625 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 3264 [2021-10-21 19:01:10,656 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 3266 states to 3266 states and 4674 transitions. [2021-10-21 19:01:10,656 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3266 [2021-10-21 19:01:10,659 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3266 [2021-10-21 19:01:10,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3266 states and 4674 transitions. [2021-10-21 19:01:10,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:01:10,666 INFO L681 BuchiCegarLoop]: Abstraction has 3266 states and 4674 transitions. [2021-10-21 19:01:10,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3266 states and 4674 transitions. [2021-10-21 19:01:10,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3266 to 3266. [2021-10-21 19:01:10,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3266 states, 3266 states have (on average 1.4311083894672383) internal successors, (4674), 3265 states have internal predecessors, (4674), 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) [2021-10-21 19:01:10,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3266 states to 3266 states and 4674 transitions. [2021-10-21 19:01:10,772 INFO L704 BuchiCegarLoop]: Abstraction has 3266 states and 4674 transitions. [2021-10-21 19:01:10,773 INFO L587 BuchiCegarLoop]: Abstraction has 3266 states and 4674 transitions. [2021-10-21 19:01:10,773 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-21 19:01:10,773 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3266 states and 4674 transitions. [2021-10-21 19:01:10,801 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 3264 [2021-10-21 19:01:10,801 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:01:10,801 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:01:10,803 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:01:10,803 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:01:10,803 INFO L791 eck$LassoCheckResult]: Stem: 10073#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 10055#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;havoc main_~cond~0; 10056#L141-1 [2021-10-21 19:01:10,803 INFO L793 eck$LassoCheckResult]: Loop: 10056#L141-1 assume !false;main_~cond~0 := main_#t~nondet16;havoc main_#t~nondet16; 10243#L40 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;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0; 10240#L63 assume !(0 != main_~p1~0); 10241#L63-2 assume !(0 != main_~p2~0); 10224#L67-1 assume !(0 != main_~p3~0); 10225#L71-1 assume !(0 != main_~p4~0); 10208#L75-1 assume !(0 != main_~p5~0); 10210#L79-1 assume !(0 != main_~p6~0); 10184#L83-1 assume !(0 != main_~p7~0); 10186#L87-1 assume !(0 != main_~p8~0); 10164#L91-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 10165#L95-1 assume !(0 != main_~p1~0); 10268#L101-1 assume !(0 != main_~p2~0); 10267#L106-1 assume !(0 != main_~p3~0); 10264#L111-1 assume !(0 != main_~p4~0); 10262#L116-1 assume !(0 != main_~p5~0); 10258#L121-1 assume !(0 != main_~p6~0); 10254#L126-1 assume !(0 != main_~p7~0); 10250#L131-1 assume !(0 != main_~p8~0); 10247#L136-1 assume !(0 != main_~p9~0); 10056#L141-1 [2021-10-21 19:01:10,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:01:10,804 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2021-10-21 19:01:10,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:01:10,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663846792] [2021-10-21 19:01:10,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:01:10,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:01:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:01:10,831 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:01:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:01:10,840 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:01:10,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:01:10,845 INFO L82 PathProgramCache]: Analyzing trace with hash -511376041, now seen corresponding path program 1 times [2021-10-21 19:01:10,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:01:10,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618104398] [2021-10-21 19:01:10,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:01:10,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:01:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:01:10,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:01:10,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:01:10,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618104398] [2021-10-21 19:01:10,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618104398] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:01:10,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:01:10,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:01:10,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311362992] [2021-10-21 19:01:10,868 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:01:10,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:01:10,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:01:10,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:01:10,869 INFO L87 Difference]: Start difference. First operand 3266 states and 4674 transitions. cyclomatic complexity: 1536 Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-10-21 19:01:10,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:01:10,915 INFO L93 Difference]: Finished difference Result 6402 states and 8962 transitions. [2021-10-21 19:01:10,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:01:10,916 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6402 states and 8962 transitions. [2021-10-21 19:01:11,039 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 6400 [2021-10-21 19:01:11,107 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6402 states to 6402 states and 8962 transitions. [2021-10-21 19:01:11,107 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6402 [2021-10-21 19:01:11,114 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6402 [2021-10-21 19:01:11,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6402 states and 8962 transitions. [2021-10-21 19:01:11,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:01:11,123 INFO L681 BuchiCegarLoop]: Abstraction has 6402 states and 8962 transitions. [2021-10-21 19:01:11,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6402 states and 8962 transitions. [2021-10-21 19:01:11,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6402 to 6402. [2021-10-21 19:01:11,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6402 states, 6402 states have (on average 1.3998750390502968) internal successors, (8962), 6401 states have internal predecessors, (8962), 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) [2021-10-21 19:01:11,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6402 states to 6402 states and 8962 transitions. [2021-10-21 19:01:11,315 INFO L704 BuchiCegarLoop]: Abstraction has 6402 states and 8962 transitions. [2021-10-21 19:01:11,315 INFO L587 BuchiCegarLoop]: Abstraction has 6402 states and 8962 transitions. [2021-10-21 19:01:11,315 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-21 19:01:11,315 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6402 states and 8962 transitions. [2021-10-21 19:01:11,386 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 6400 [2021-10-21 19:01:11,386 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:01:11,386 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:01:11,387 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:01:11,387 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:01:11,387 INFO L791 eck$LassoCheckResult]: Stem: 19746#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); 19729#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_#t~nondet14, main_#t~nondet15, main_#t~nondet16, 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_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, 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;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;havoc main_~cond~0; 19730#L141-1 [2021-10-21 19:01:11,387 INFO L793 eck$LassoCheckResult]: Loop: 19730#L141-1 assume !false;main_~cond~0 := main_#t~nondet16;havoc main_#t~nondet16; 20273#L40 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;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0; 20270#L63 assume !(0 != main_~p1~0); 20271#L63-2 assume !(0 != main_~p2~0); 20256#L67-1 assume !(0 != main_~p3~0); 20253#L71-1 assume !(0 != main_~p4~0); 20247#L75-1 assume !(0 != main_~p5~0); 20237#L79-1 assume !(0 != main_~p6~0); 20239#L83-1 assume !(0 != main_~p7~0); 20298#L87-1 assume !(0 != main_~p8~0); 20211#L91-1 assume !(0 != main_~p9~0); 20213#L95-1 assume !(0 != main_~p1~0); 20272#L101-1 assume !(0 != main_~p2~0); 20338#L106-1 assume !(0 != main_~p3~0); 20334#L111-1 assume !(0 != main_~p4~0); 20331#L116-1 assume !(0 != main_~p5~0); 20328#L121-1 assume !(0 != main_~p6~0); 20326#L126-1 assume !(0 != main_~p7~0); 20324#L131-1 assume !(0 != main_~p8~0); 20322#L136-1 assume !(0 != main_~p9~0); 19730#L141-1 [2021-10-21 19:01:11,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:01:11,388 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2021-10-21 19:01:11,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:01:11,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105821205] [2021-10-21 19:01:11,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:01:11,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:01:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:01:11,395 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:01:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:01:11,402 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:01:11,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:01:11,403 INFO L82 PathProgramCache]: Analyzing trace with hash -904403051, now seen corresponding path program 1 times [2021-10-21 19:01:11,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:01:11,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984367639] [2021-10-21 19:01:11,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:01:11,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:01:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:01:11,407 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:01:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:01:11,414 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:01:11,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:01:11,415 INFO L82 PathProgramCache]: Analyzing trace with hash 551712343, now seen corresponding path program 1 times [2021-10-21 19:01:11,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:01:11,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710010649] [2021-10-21 19:01:11,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:01:11,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:01:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:01:11,422 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:01:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:01:11,433 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:01:12,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:01:12 BoogieIcfgContainer [2021-10-21 19:01:12,108 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:01:12,108 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:01:12,108 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:01:12,109 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:01:12,109 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:01:08" (3/4) ... [2021-10-21 19:01:12,112 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 19:01:12,156 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcc301c-9b14-40b1-9dd9-d27a2f5c8fcb/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:01:12,156 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:01:12,157 INFO L168 Benchmark]: Toolchain (without parser) took 3918.48 ms. Allocated memory was 90.2 MB in the beginning and 159.4 MB in the end (delta: 69.2 MB). Free memory was 53.0 MB in the beginning and 55.0 MB in the end (delta: -2.0 MB). Peak memory consumption was 67.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:01:12,158 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory is still 69.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:01:12,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.17 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 52.9 MB in the beginning and 88.8 MB in the end (delta: -36.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:01:12,159 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.15 ms. Allocated memory is still 113.2 MB. Free memory was 88.8 MB in the beginning and 87.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:01:12,160 INFO L168 Benchmark]: Boogie Preprocessor took 28.20 ms. Allocated memory is still 113.2 MB. Free memory was 87.1 MB in the beginning and 85.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:01:12,160 INFO L168 Benchmark]: RCFGBuilder took 390.53 ms. Allocated memory is still 113.2 MB. Free memory was 85.8 MB in the beginning and 74.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:01:12,161 INFO L168 Benchmark]: BuchiAutomizer took 3157.38 ms. Allocated memory was 113.2 MB in the beginning and 159.4 MB in the end (delta: 46.1 MB). Free memory was 74.3 MB in the beginning and 57.1 MB in the end (delta: 17.2 MB). Peak memory consumption was 66.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:01:12,161 INFO L168 Benchmark]: Witness Printer took 47.66 ms. Allocated memory is still 159.4 MB. Free memory was 57.1 MB in the beginning and 55.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:01:12,164 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory is still 69.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 255.17 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 52.9 MB in the beginning and 88.8 MB in the end (delta: -36.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.15 ms. Allocated memory is still 113.2 MB. Free memory was 88.8 MB in the beginning and 87.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.20 ms. Allocated memory is still 113.2 MB. Free memory was 87.1 MB in the beginning and 85.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 390.53 ms. Allocated memory is still 113.2 MB. Free memory was 85.8 MB in the beginning and 74.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3157.38 ms. Allocated memory was 113.2 MB in the beginning and 159.4 MB in the end (delta: 46.1 MB). Free memory was 74.3 MB in the beginning and 57.1 MB in the end (delta: 17.2 MB). Peak memory consumption was 66.0 MB. Max. memory is 16.1 GB. * Witness Printer took 47.66 ms. Allocated memory is still 159.4 MB. Free memory was 57.1 MB in the beginning and 55.0 MB in the end (delta: 2.1 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 8 terminating modules (8 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.8 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 6402 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.0s and 9 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 8. Minimization of nondet autom 0. Automata minimization 466.3ms AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.3s Buchi closure took 0.0s. Biggest automaton had 6402 states and ocurred in iteration 8. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 583 SDtfs, 301 SDslu, 356 SDs, 0 SdLazy, 40 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 86.9ms Time LassoAnalysisResults: nont1 unkn0 SFLI8 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: 38]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=28255} State at position 1 is {NULL=28258, NULL=0, p1=0, \result=0, p3=0, p2=0, p5=0, NULL=28255, p4=0, p7=0, p6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1f5da882=0, p9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1a26504c=0, p8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4b510447=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@33c3623e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@41a8c57c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ecce4e9=9, cond=9, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69245935=0, NULL=28257, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2a141b6a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ee5e84=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56af880=0, NULL=0, NULL=0, NULL=0, NULL=28256, lk3=0, lk4=0, lk5=0, lk6=0, NULL=0, lk1=0, lk2=0, lk7=0, lk8=0, lk9=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 38]: 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; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L36] int cond; Loop: [L38] COND TRUE 1 [L39] cond = __VERIFIER_nondet_int() [L40] COND FALSE !(cond == 0) [L43] lk1 = 0 [L45] lk2 = 0 [L47] lk3 = 0 [L49] lk4 = 0 [L51] lk5 = 0 [L53] lk6 = 0 [L55] lk7 = 0 [L57] lk8 = 0 [L59] lk9 = 0 [L63] COND FALSE !(p1 != 0) [L67] COND FALSE !(p2 != 0) [L71] COND FALSE !(p3 != 0) [L75] COND FALSE !(p4 != 0) [L79] COND FALSE !(p5 != 0) [L83] COND FALSE !(p6 != 0) [L87] COND FALSE !(p7 != 0) [L91] COND FALSE !(p8 != 0) [L95] COND FALSE !(p9 != 0) [L101] COND FALSE !(p1 != 0) [L106] COND FALSE !(p2 != 0) [L111] COND FALSE !(p3 != 0) [L116] COND FALSE !(p4 != 0) [L121] COND FALSE !(p5 != 0) [L126] COND FALSE !(p6 != 0) [L131] COND FALSE !(p7 != 0) [L136] COND FALSE !(p8 != 0) [L141] COND FALSE !(p9 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:01:12,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfcc301c-9b14-40b1-9dd9-d27a2f5c8fcb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...