./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_15-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f9bc34-a78f-4e17-8f7c-be04cf3a129f/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f9bc34-a78f-4e17-8f7c-be04cf3a129f/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f9bc34-a78f-4e17-8f7c-be04cf3a129f/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f9bc34-a78f-4e17-8f7c-be04cf3a129f/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_15-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f9bc34-a78f-4e17-8f7c-be04cf3a129f/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f9bc34-a78f-4e17-8f7c-be04cf3a129f/bin/uautomizer-UnR33cPsHg --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 ad13fcacd201ae20f6800b42387b8ec1153fb1bf63cee7a12ec23f4a302be7c7 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:13:31,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:13:31,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:13:31,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:13:31,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:13:31,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:13:31,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:13:31,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:13:31,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:13:31,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:13:31,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:13:31,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:13:31,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:13:31,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:13:31,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:13:31,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:13:31,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:13:31,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:13:31,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:13:31,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:13:31,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:13:31,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:13:31,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:13:31,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:13:31,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:13:31,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:13:31,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:13:31,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:13:31,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:13:31,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:13:31,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:13:31,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:13:31,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:13:31,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:13:31,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:13:31,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:13:31,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:13:31,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:13:31,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:13:31,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:13:31,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:13:31,835 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f9bc34-a78f-4e17-8f7c-be04cf3a129f/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 09:13:31,895 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:13:31,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:13:31,896 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:13:31,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:13:31,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:13:31,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:13:31,899 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:13:31,899 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:13:31,900 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:13:31,900 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:13:31,901 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:13:31,902 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:13:31,902 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:13:31,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:13:31,902 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:13:31,903 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:13:31,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:13:31,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:13:31,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:13:31,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:13:31,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:13:31,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:13:31,905 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:13:31,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:13:31,905 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:13:31,906 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:13:31,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:13:31,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:13:31,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:13:31,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:13:31,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:13:31,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:13:31,911 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:13:31,911 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_81f9bc34-a78f-4e17-8f7c-be04cf3a129f/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f9bc34-a78f-4e17-8f7c-be04cf3a129f/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad13fcacd201ae20f6800b42387b8ec1153fb1bf63cee7a12ec23f4a302be7c7 [2021-10-28 09:13:32,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:13:32,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:13:32,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:13:32,303 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:13:32,304 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:13:32,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f9bc34-a78f-4e17-8f7c-be04cf3a129f/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/locks/test_locks_15-2.c [2021-10-28 09:13:32,430 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f9bc34-a78f-4e17-8f7c-be04cf3a129f/bin/uautomizer-UnR33cPsHg/data/68f67be92/de3a25a58732445e951e67ca85f9fcbf/FLAGa3dbaf3bd [2021-10-28 09:13:32,966 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:13:32,967 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f9bc34-a78f-4e17-8f7c-be04cf3a129f/sv-benchmarks/c/locks/test_locks_15-2.c [2021-10-28 09:13:32,978 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f9bc34-a78f-4e17-8f7c-be04cf3a129f/bin/uautomizer-UnR33cPsHg/data/68f67be92/de3a25a58732445e951e67ca85f9fcbf/FLAGa3dbaf3bd [2021-10-28 09:13:33,355 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f9bc34-a78f-4e17-8f7c-be04cf3a129f/bin/uautomizer-UnR33cPsHg/data/68f67be92/de3a25a58732445e951e67ca85f9fcbf [2021-10-28 09:13:33,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:13:33,362 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:13:33,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:13:33,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:13:33,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:13:33,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:13:33" (1/1) ... [2021-10-28 09:13:33,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@567c8be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:13:33, skipping insertion in model container [2021-10-28 09:13:33,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:13:33" (1/1) ... [2021-10-28 09:13:33,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:13:33,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:13:33,695 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_81f9bc34-a78f-4e17-8f7c-be04cf3a129f/sv-benchmarks/c/locks/test_locks_15-2.c[5628,5641] [2021-10-28 09:13:33,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:13:33,708 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:13:33,757 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_81f9bc34-a78f-4e17-8f7c-be04cf3a129f/sv-benchmarks/c/locks/test_locks_15-2.c[5628,5641] [2021-10-28 09:13:33,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:13:33,776 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:13:33,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:13:33 WrapperNode [2021-10-28 09:13:33,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:13:33,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:13:33,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:13:33,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:13:33,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:13:33" (1/1) ... [2021-10-28 09:13:33,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:13:33" (1/1) ... [2021-10-28 09:13:33,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:13:33,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:13:33,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:13:33,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:13:33,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:13:33" (1/1) ... [2021-10-28 09:13:33,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:13:33" (1/1) ... [2021-10-28 09:13:33,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:13:33" (1/1) ... [2021-10-28 09:13:33,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:13:33" (1/1) ... [2021-10-28 09:13:33,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:13:33" (1/1) ... [2021-10-28 09:13:33,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:13:33" (1/1) ... [2021-10-28 09:13:33,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:13:33" (1/1) ... [2021-10-28 09:13:33,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:13:33,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:13:33,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:13:33,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:13:33,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:13:33" (1/1) ... [2021-10-28 09:13:33,938 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:13:33,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f9bc34-a78f-4e17-8f7c-be04cf3a129f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:13:33,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f9bc34-a78f-4e17-8f7c-be04cf3a129f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:13:33,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f9bc34-a78f-4e17-8f7c-be04cf3a129f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:13:34,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:13:34,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:13:34,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:13:34,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:13:34,461 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:13:34,462 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 09:13:34,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:13:34 BoogieIcfgContainer [2021-10-28 09:13:34,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:13:34,466 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:13:34,466 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:13:34,470 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:13:34,471 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:13:34,471 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:13:33" (1/3) ... [2021-10-28 09:13:34,473 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@63f46d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:13:34, skipping insertion in model container [2021-10-28 09:13:34,473 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:13:34,474 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:13:33" (2/3) ... [2021-10-28 09:13:34,474 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@63f46d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:13:34, skipping insertion in model container [2021-10-28 09:13:34,475 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:13:34,475 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:13:34" (3/3) ... [2021-10-28 09:13:34,477 INFO L389 chiAutomizerObserver]: Analyzing ICFG test_locks_15-2.c [2021-10-28 09:13:34,533 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:13:34,533 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:13:34,533 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:13:34,534 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:13:34,534 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:13:34,534 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:13:34,534 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:13:34,535 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:13:34,556 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 54 states, 53 states have (on average 1.9056603773584906) internal successors, (101), 53 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:34,587 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2021-10-28 09:13:34,587 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:13:34,588 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:13:34,597 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:13:34,597 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:13:34,598 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:13:34,599 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 54 states, 53 states have (on average 1.9056603773584906) internal successors, (101), 53 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:34,609 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2021-10-28 09:13:34,609 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:13:34,609 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:13:34,612 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:13:34,612 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:13:34,623 INFO L791 eck$LassoCheckResult]: Stem: 44#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 34#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_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, 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_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~p15~0, main_~lk15~0, 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;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;main_~p15~0 := main_#t~nondet21;havoc main_#t~nondet21;havoc main_~lk15~0;havoc main_~cond~0; 21#L225-1true [2021-10-28 09:13:34,625 INFO L793 eck$LassoCheckResult]: Loop: 21#L225-1true assume !false;main_~cond~0 := main_#t~nondet22;havoc main_#t~nondet22; 33#L58true 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;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0;main_~lk15~0 := 0; 29#L93true assume 0 != main_~p1~0;main_~lk1~0 := 1; 26#L93-2true assume 0 != main_~p2~0;main_~lk2~0 := 1; 14#L97-1true assume !(0 != main_~p3~0); 17#L101-1true assume 0 != main_~p4~0;main_~lk4~0 := 1; 51#L105-1true assume 0 != main_~p5~0;main_~lk5~0 := 1; 46#L109-1true assume 0 != main_~p6~0;main_~lk6~0 := 1; 13#L113-1true assume 0 != main_~p7~0;main_~lk7~0 := 1; 23#L117-1true assume 0 != main_~p8~0;main_~lk8~0 := 1; 31#L121-1true assume 0 != main_~p9~0;main_~lk9~0 := 1; 18#L125-1true assume 0 != main_~p10~0;main_~lk10~0 := 1; 36#L129-1true assume !(0 != main_~p11~0); 4#L133-1true assume 0 != main_~p12~0;main_~lk12~0 := 1; 7#L137-1true assume 0 != main_~p13~0;main_~lk13~0 := 1; 41#L141-1true assume 0 != main_~p14~0;main_~lk14~0 := 1; 55#L145-1true assume 0 != main_~p15~0;main_~lk15~0 := 1; 49#L149-1true assume !(0 != main_~p1~0); 48#L155-1true assume !(0 != main_~p2~0); 28#L160-1true assume !(0 != main_~p3~0); 12#L165-1true assume !(0 != main_~p4~0); 43#L170-1true assume !(0 != main_~p5~0); 47#L175-1true assume !(0 != main_~p6~0); 19#L180-1true assume !(0 != main_~p7~0); 40#L185-1true assume !(0 != main_~p8~0); 25#L190-1true assume !(0 != main_~p9~0); 42#L195-1true assume !(0 != main_~p10~0); 16#L200-1true assume !(0 != main_~p11~0); 45#L205-1true assume !(0 != main_~p12~0); 24#L210-1true assume !(0 != main_~p13~0); 6#L215-1true assume !(0 != main_~p14~0); 38#L220-1true assume !(0 != main_~p15~0); 21#L225-1true [2021-10-28 09:13:34,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:34,633 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-28 09:13:34,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:34,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866983650] [2021-10-28 09:13:34,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:34,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:34,776 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:13:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:34,830 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:13:34,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:34,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2064553094, now seen corresponding path program 1 times [2021-10-28 09:13:34,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:34,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898699093] [2021-10-28 09:13:34,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:34,836 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:13:35,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:13:35,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:13:35,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898699093] [2021-10-28 09:13:35,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898699093] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:13:35,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:13:35,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:13:35,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503684367] [2021-10-28 09:13:35,029 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:13:35,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:35,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:13:35,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:13:35,058 INFO L87 Difference]: Start difference. First operand has 54 states, 53 states have (on average 1.9056603773584906) internal successors, (101), 53 states have internal predecessors, (101), 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 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:35,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:35,129 INFO L93 Difference]: Finished difference Result 105 states and 190 transitions. [2021-10-28 09:13:35,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:13:35,134 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 105 states and 190 transitions. [2021-10-28 09:13:35,150 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 93 [2021-10-28 09:13:35,164 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 105 states to 95 states and 153 transitions. [2021-10-28 09:13:35,169 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95 [2021-10-28 09:13:35,172 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 95 [2021-10-28 09:13:35,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 153 transitions. [2021-10-28 09:13:35,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:13:35,176 INFO L681 BuchiCegarLoop]: Abstraction has 95 states and 153 transitions. [2021-10-28 09:13:35,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states and 153 transitions. [2021-10-28 09:13:35,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-10-28 09:13:35,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 95 states have (on average 1.6105263157894736) internal successors, (153), 94 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:35,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 153 transitions. [2021-10-28 09:13:35,245 INFO L704 BuchiCegarLoop]: Abstraction has 95 states and 153 transitions. [2021-10-28 09:13:35,245 INFO L587 BuchiCegarLoop]: Abstraction has 95 states and 153 transitions. [2021-10-28 09:13:35,246 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:13:35,246 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 95 states and 153 transitions. [2021-10-28 09:13:35,255 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 93 [2021-10-28 09:13:35,259 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:13:35,260 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:13:35,261 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:13:35,262 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:13:35,263 INFO L791 eck$LassoCheckResult]: Stem: 215#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 208#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_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, 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_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~p15~0, main_~lk15~0, 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;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;main_~p15~0 := main_#t~nondet21;havoc main_#t~nondet21;havoc main_~lk15~0;havoc main_~cond~0; 209#L225-1 [2021-10-28 09:13:35,264 INFO L793 eck$LassoCheckResult]: Loop: 209#L225-1 assume !false;main_~cond~0 := main_#t~nondet22;havoc main_#t~nondet22; 237#L58 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;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0;main_~lk15~0 := 0; 236#L93 assume !(0 != main_~p1~0); 235#L93-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 234#L97-1 assume !(0 != main_~p3~0); 233#L101-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 220#L105-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 216#L109-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 183#L113-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 184#L117-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 199#L121-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 191#L125-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 192#L129-1 assume !(0 != main_~p11~0); 168#L133-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 169#L137-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 173#L141-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 212#L145-1 assume 0 != main_~p15~0;main_~lk15~0 := 1; 221#L149-1 assume !(0 != main_~p1~0); 222#L155-1 assume !(0 != main_~p2~0); 261#L160-1 assume !(0 != main_~p3~0); 259#L165-1 assume !(0 != main_~p4~0); 256#L170-1 assume !(0 != main_~p5~0); 255#L175-1 assume !(0 != main_~p6~0); 253#L180-1 assume !(0 != main_~p7~0); 250#L185-1 assume !(0 != main_~p8~0); 249#L190-1 assume !(0 != main_~p9~0); 247#L195-1 assume !(0 != main_~p10~0); 187#L200-1 assume !(0 != main_~p11~0); 188#L205-1 assume !(0 != main_~p12~0); 206#L210-1 assume !(0 != main_~p13~0); 241#L215-1 assume !(0 != main_~p14~0); 239#L220-1 assume !(0 != main_~p15~0); 209#L225-1 [2021-10-28 09:13:35,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:35,269 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-10-28 09:13:35,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:35,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215230805] [2021-10-28 09:13:35,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:35,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:35,312 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:13:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:35,352 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:13:35,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:35,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2087185348, now seen corresponding path program 1 times [2021-10-28 09:13:35,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:35,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776202398] [2021-10-28 09:13:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:35,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:13:35,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:13:35,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:13:35,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776202398] [2021-10-28 09:13:35,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776202398] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:13:35,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:13:35,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:13:35,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662300984] [2021-10-28 09:13:35,465 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:13:35,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:35,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:13:35,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:13:35,469 INFO L87 Difference]: Start difference. First operand 95 states and 153 transitions. cyclomatic complexity: 60 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:35,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:35,512 INFO L93 Difference]: Finished difference Result 186 states and 298 transitions. [2021-10-28 09:13:35,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:13:35,516 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 186 states and 298 transitions. [2021-10-28 09:13:35,526 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 184 [2021-10-28 09:13:35,531 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 186 states to 186 states and 298 transitions. [2021-10-28 09:13:35,534 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 186 [2021-10-28 09:13:35,536 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 186 [2021-10-28 09:13:35,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 186 states and 298 transitions. [2021-10-28 09:13:35,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:13:35,541 INFO L681 BuchiCegarLoop]: Abstraction has 186 states and 298 transitions. [2021-10-28 09:13:35,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states and 298 transitions. [2021-10-28 09:13:35,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-10-28 09:13:35,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 186 states have (on average 1.6021505376344085) internal successors, (298), 185 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:35,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 298 transitions. [2021-10-28 09:13:35,576 INFO L704 BuchiCegarLoop]: Abstraction has 186 states and 298 transitions. [2021-10-28 09:13:35,576 INFO L587 BuchiCegarLoop]: Abstraction has 186 states and 298 transitions. [2021-10-28 09:13:35,576 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:13:35,576 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 186 states and 298 transitions. [2021-10-28 09:13:35,579 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 184 [2021-10-28 09:13:35,579 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:13:35,580 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:13:35,584 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:13:35,584 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:13:35,584 INFO L791 eck$LassoCheckResult]: Stem: 508#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 498#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_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, 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_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~p15~0, main_~lk15~0, 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;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;main_~p15~0 := main_#t~nondet21;havoc main_#t~nondet21;havoc main_~lk15~0;havoc main_~cond~0; 499#L225-1 [2021-10-28 09:13:35,585 INFO L793 eck$LassoCheckResult]: Loop: 499#L225-1 assume !false;main_~cond~0 := main_#t~nondet22;havoc main_#t~nondet22; 554#L58 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;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0;main_~lk15~0 := 0; 552#L93 assume !(0 != main_~p1~0); 537#L93-2 assume !(0 != main_~p2~0); 538#L97-1 assume !(0 != main_~p3~0); 533#L101-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 514#L105-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 509#L109-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 470#L113-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 471#L117-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 486#L121-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 478#L125-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 479#L129-1 assume !(0 != main_~p11~0); 455#L133-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 456#L137-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 460#L141-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 515#L145-1 assume 0 != main_~p15~0;main_~lk15~0 := 1; 516#L149-1 assume !(0 != main_~p1~0); 540#L155-1 assume !(0 != main_~p2~0); 591#L160-1 assume !(0 != main_~p3~0); 589#L165-1 assume !(0 != main_~p4~0); 586#L170-1 assume !(0 != main_~p5~0); 585#L175-1 assume !(0 != main_~p6~0); 583#L180-1 assume !(0 != main_~p7~0); 580#L185-1 assume !(0 != main_~p8~0); 579#L190-1 assume !(0 != main_~p9~0); 577#L195-1 assume !(0 != main_~p10~0); 575#L200-1 assume !(0 != main_~p11~0); 573#L205-1 assume !(0 != main_~p12~0); 571#L210-1 assume !(0 != main_~p13~0); 569#L215-1 assume !(0 != main_~p14~0); 558#L220-1 assume !(0 != main_~p15~0); 499#L225-1 [2021-10-28 09:13:35,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:35,590 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-10-28 09:13:35,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:35,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975473011] [2021-10-28 09:13:35,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:35,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:35,638 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:13:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:35,670 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:13:35,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:35,676 INFO L85 PathProgramCache]: Analyzing trace with hash -821578554, now seen corresponding path program 1 times [2021-10-28 09:13:35,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:35,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014253907] [2021-10-28 09:13:35,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:35,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:13:35,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:13:35,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:13:35,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014253907] [2021-10-28 09:13:35,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014253907] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:13:35,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:13:35,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:13:35,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116374573] [2021-10-28 09:13:35,763 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:13:35,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:35,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:13:35,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:13:35,766 INFO L87 Difference]: Start difference. First operand 186 states and 298 transitions. cyclomatic complexity: 116 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:35,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:35,816 INFO L93 Difference]: Finished difference Result 366 states and 582 transitions. [2021-10-28 09:13:35,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:13:35,817 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 366 states and 582 transitions. [2021-10-28 09:13:35,822 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 364 [2021-10-28 09:13:35,830 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 366 states to 366 states and 582 transitions. [2021-10-28 09:13:35,831 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 366 [2021-10-28 09:13:35,831 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 366 [2021-10-28 09:13:35,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 366 states and 582 transitions. [2021-10-28 09:13:35,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:13:35,842 INFO L681 BuchiCegarLoop]: Abstraction has 366 states and 582 transitions. [2021-10-28 09:13:35,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states and 582 transitions. [2021-10-28 09:13:35,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2021-10-28 09:13:35,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 366 states have (on average 1.5901639344262295) internal successors, (582), 365 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:35,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 582 transitions. [2021-10-28 09:13:35,868 INFO L704 BuchiCegarLoop]: Abstraction has 366 states and 582 transitions. [2021-10-28 09:13:35,869 INFO L587 BuchiCegarLoop]: Abstraction has 366 states and 582 transitions. [2021-10-28 09:13:35,869 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:13:35,869 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 366 states and 582 transitions. [2021-10-28 09:13:35,873 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 364 [2021-10-28 09:13:35,873 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:13:35,873 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:13:35,874 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:13:35,874 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:13:35,874 INFO L791 eck$LassoCheckResult]: Stem: 1067#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1057#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_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, 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_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~p15~0, main_~lk15~0, 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;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;main_~p15~0 := main_#t~nondet21;havoc main_#t~nondet21;havoc main_~lk15~0;havoc main_~cond~0; 1058#L225-1 [2021-10-28 09:13:35,875 INFO L793 eck$LassoCheckResult]: Loop: 1058#L225-1 assume !false;main_~cond~0 := main_#t~nondet22;havoc main_#t~nondet22; 1096#L58 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;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0;main_~lk15~0 := 0; 1092#L93 assume !(0 != main_~p1~0); 1085#L93-2 assume !(0 != main_~p2~0); 1086#L97-1 assume !(0 != main_~p3~0); 1237#L101-1 assume !(0 != main_~p4~0); 1234#L105-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 1232#L109-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 1228#L113-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 1224#L117-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 1220#L121-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 1216#L125-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 1212#L129-1 assume !(0 != main_~p11~0); 1208#L133-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 1204#L137-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 1200#L141-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 1196#L145-1 assume 0 != main_~p15~0;main_~lk15~0 := 1; 1190#L149-1 assume !(0 != main_~p1~0); 1188#L155-1 assume !(0 != main_~p2~0); 1187#L160-1 assume !(0 != main_~p3~0); 1182#L165-1 assume !(0 != main_~p4~0); 1175#L170-1 assume !(0 != main_~p5~0); 1127#L175-1 assume !(0 != main_~p6~0); 1123#L180-1 assume !(0 != main_~p7~0); 1120#L185-1 assume !(0 != main_~p8~0); 1119#L190-1 assume !(0 != main_~p9~0); 1117#L195-1 assume !(0 != main_~p10~0); 1115#L200-1 assume !(0 != main_~p11~0); 1113#L205-1 assume !(0 != main_~p12~0); 1111#L210-1 assume !(0 != main_~p13~0); 1109#L215-1 assume !(0 != main_~p14~0); 1107#L220-1 assume !(0 != main_~p15~0); 1058#L225-1 [2021-10-28 09:13:35,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:35,876 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-10-28 09:13:35,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:35,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807712862] [2021-10-28 09:13:35,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:35,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:35,889 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:13:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:35,906 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:13:35,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:35,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1101649480, now seen corresponding path program 1 times [2021-10-28 09:13:35,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:35,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99113587] [2021-10-28 09:13:35,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:35,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:13:35,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:13:35,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:13:35,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99113587] [2021-10-28 09:13:35,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99113587] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:13:35,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:13:35,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:13:35,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465530690] [2021-10-28 09:13:35,952 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:13:35,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:35,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:13:35,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:13:35,954 INFO L87 Difference]: Start difference. First operand 366 states and 582 transitions. cyclomatic complexity: 224 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:35,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:35,982 INFO L93 Difference]: Finished difference Result 722 states and 1138 transitions. [2021-10-28 09:13:35,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:13:35,983 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 722 states and 1138 transitions. [2021-10-28 09:13:35,994 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 720 [2021-10-28 09:13:36,002 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 722 states to 722 states and 1138 transitions. [2021-10-28 09:13:36,003 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 722 [2021-10-28 09:13:36,005 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 722 [2021-10-28 09:13:36,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 722 states and 1138 transitions. [2021-10-28 09:13:36,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:13:36,012 INFO L681 BuchiCegarLoop]: Abstraction has 722 states and 1138 transitions. [2021-10-28 09:13:36,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states and 1138 transitions. [2021-10-28 09:13:36,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2021-10-28 09:13:36,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 722 states have (on average 1.5761772853185596) internal successors, (1138), 721 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:36,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1138 transitions. [2021-10-28 09:13:36,092 INFO L704 BuchiCegarLoop]: Abstraction has 722 states and 1138 transitions. [2021-10-28 09:13:36,092 INFO L587 BuchiCegarLoop]: Abstraction has 722 states and 1138 transitions. [2021-10-28 09:13:36,092 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 09:13:36,093 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 722 states and 1138 transitions. [2021-10-28 09:13:36,099 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 720 [2021-10-28 09:13:36,099 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:13:36,100 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:13:36,100 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:13:36,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:13:36,101 INFO L791 eck$LassoCheckResult]: Stem: 2156#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2149#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_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, 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_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~p15~0, main_~lk15~0, 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;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;main_~p15~0 := main_#t~nondet21;havoc main_#t~nondet21;havoc main_~lk15~0;havoc main_~cond~0; 2150#L225-1 [2021-10-28 09:13:36,101 INFO L793 eck$LassoCheckResult]: Loop: 2150#L225-1 assume !false;main_~cond~0 := main_#t~nondet22;havoc main_#t~nondet22; 2251#L58 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;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0;main_~lk15~0 := 0; 2247#L93 assume !(0 != main_~p1~0); 2240#L93-2 assume !(0 != main_~p2~0); 2235#L97-1 assume !(0 != main_~p3~0); 2228#L101-1 assume !(0 != main_~p4~0); 2222#L105-1 assume !(0 != main_~p5~0); 2218#L109-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 2216#L113-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 2214#L117-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 2212#L121-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 2210#L125-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 2207#L129-1 assume !(0 != main_~p11~0); 2208#L133-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 2201#L137-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 2202#L141-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 2194#L145-1 assume 0 != main_~p15~0;main_~lk15~0 := 1; 2195#L149-1 assume !(0 != main_~p1~0); 2184#L155-1 assume !(0 != main_~p2~0); 2186#L160-1 assume !(0 != main_~p3~0); 2363#L165-1 assume !(0 != main_~p4~0); 2351#L170-1 assume !(0 != main_~p5~0); 2350#L175-1 assume !(0 != main_~p6~0); 2348#L180-1 assume !(0 != main_~p7~0); 2344#L185-1 assume !(0 != main_~p8~0); 2339#L190-1 assume !(0 != main_~p9~0); 2333#L195-1 assume !(0 != main_~p10~0); 2282#L200-1 assume !(0 != main_~p11~0); 2280#L205-1 assume !(0 != main_~p12~0); 2274#L210-1 assume !(0 != main_~p13~0); 2270#L215-1 assume !(0 != main_~p14~0); 2260#L220-1 assume !(0 != main_~p15~0); 2150#L225-1 [2021-10-28 09:13:36,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:36,102 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-10-28 09:13:36,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:36,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051893434] [2021-10-28 09:13:36,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:36,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:36,127 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:13:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:36,151 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:13:36,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:36,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1163689094, now seen corresponding path program 1 times [2021-10-28 09:13:36,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:36,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167942198] [2021-10-28 09:13:36,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:36,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:13:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:13:36,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:13:36,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167942198] [2021-10-28 09:13:36,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167942198] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:13:36,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:13:36,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:13:36,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719338335] [2021-10-28 09:13:36,220 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:13:36,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:36,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:13:36,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:13:36,228 INFO L87 Difference]: Start difference. First operand 722 states and 1138 transitions. cyclomatic complexity: 432 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:36,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:36,256 INFO L93 Difference]: Finished difference Result 1426 states and 2226 transitions. [2021-10-28 09:13:36,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:13:36,257 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1426 states and 2226 transitions. [2021-10-28 09:13:36,274 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1424 [2021-10-28 09:13:36,292 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1426 states to 1426 states and 2226 transitions. [2021-10-28 09:13:36,293 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1426 [2021-10-28 09:13:36,294 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1426 [2021-10-28 09:13:36,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1426 states and 2226 transitions. [2021-10-28 09:13:36,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:13:36,298 INFO L681 BuchiCegarLoop]: Abstraction has 1426 states and 2226 transitions. [2021-10-28 09:13:36,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states and 2226 transitions. [2021-10-28 09:13:36,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1426. [2021-10-28 09:13:36,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1426 states have (on average 1.5610098176718092) internal successors, (2226), 1425 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2226 transitions. [2021-10-28 09:13:36,357 INFO L704 BuchiCegarLoop]: Abstraction has 1426 states and 2226 transitions. [2021-10-28 09:13:36,357 INFO L587 BuchiCegarLoop]: Abstraction has 1426 states and 2226 transitions. [2021-10-28 09:13:36,359 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 09:13:36,359 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1426 states and 2226 transitions. [2021-10-28 09:13:36,384 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1424 [2021-10-28 09:13:36,385 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:13:36,385 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:13:36,386 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:13:36,386 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:13:36,386 INFO L791 eck$LassoCheckResult]: Stem: 4313#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 4305#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_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, 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_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~p15~0, main_~lk15~0, 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;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;main_~p15~0 := main_#t~nondet21;havoc main_#t~nondet21;havoc main_~lk15~0;havoc main_~cond~0; 4306#L225-1 [2021-10-28 09:13:36,386 INFO L793 eck$LassoCheckResult]: Loop: 4306#L225-1 assume !false;main_~cond~0 := main_#t~nondet22;havoc main_#t~nondet22; 4520#L58 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;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0;main_~lk15~0 := 0; 4521#L93 assume !(0 != main_~p1~0); 4734#L93-2 assume !(0 != main_~p2~0); 4733#L97-1 assume !(0 != main_~p3~0); 4731#L101-1 assume !(0 != main_~p4~0); 4728#L105-1 assume !(0 != main_~p5~0); 4724#L109-1 assume !(0 != main_~p6~0); 4722#L113-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 4720#L117-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 4718#L121-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 4716#L125-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 4714#L129-1 assume !(0 != main_~p11~0); 4712#L133-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 4710#L137-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 4708#L141-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 4706#L145-1 assume 0 != main_~p15~0;main_~lk15~0 := 1; 4703#L149-1 assume !(0 != main_~p1~0); 4704#L155-1 assume !(0 != main_~p2~0); 4753#L160-1 assume !(0 != main_~p3~0); 4654#L165-1 assume !(0 != main_~p4~0); 4655#L170-1 assume !(0 != main_~p5~0); 4643#L175-1 assume !(0 != main_~p6~0); 4645#L180-1 assume !(0 != main_~p7~0); 4627#L185-1 assume !(0 != main_~p8~0); 4628#L190-1 assume !(0 != main_~p9~0); 4612#L195-1 assume !(0 != main_~p10~0); 4611#L200-1 assume !(0 != main_~p11~0); 4595#L205-1 assume !(0 != main_~p12~0); 4587#L210-1 assume !(0 != main_~p13~0); 4586#L215-1 assume !(0 != main_~p14~0); 4540#L220-1 assume !(0 != main_~p15~0); 4306#L225-1 [2021-10-28 09:13:36,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:36,389 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2021-10-28 09:13:36,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:36,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305703615] [2021-10-28 09:13:36,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:36,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:36,412 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:13:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:36,441 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:13:36,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:36,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1304237704, now seen corresponding path program 1 times [2021-10-28 09:13:36,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:36,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474271499] [2021-10-28 09:13:36,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:36,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:13:36,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:13:36,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:13:36,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474271499] [2021-10-28 09:13:36,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474271499] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:13:36,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:13:36,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:13:36,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725486652] [2021-10-28 09:13:36,506 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:13:36,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:36,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:13:36,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:13:36,507 INFO L87 Difference]: Start difference. First operand 1426 states and 2226 transitions. cyclomatic complexity: 832 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:36,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:36,543 INFO L93 Difference]: Finished difference Result 2818 states and 4354 transitions. [2021-10-28 09:13:36,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:13:36,544 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2818 states and 4354 transitions. [2021-10-28 09:13:36,596 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2816 [2021-10-28 09:13:36,627 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2818 states to 2818 states and 4354 transitions. [2021-10-28 09:13:36,628 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2818 [2021-10-28 09:13:36,631 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2818 [2021-10-28 09:13:36,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2818 states and 4354 transitions. [2021-10-28 09:13:36,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:13:36,639 INFO L681 BuchiCegarLoop]: Abstraction has 2818 states and 4354 transitions. [2021-10-28 09:13:36,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states and 4354 transitions. [2021-10-28 09:13:36,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 2818. [2021-10-28 09:13:36,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2818 states, 2818 states have (on average 1.5450674237047552) internal successors, (4354), 2817 states have internal predecessors, (4354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:36,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2818 states to 2818 states and 4354 transitions. [2021-10-28 09:13:36,763 INFO L704 BuchiCegarLoop]: Abstraction has 2818 states and 4354 transitions. [2021-10-28 09:13:36,763 INFO L587 BuchiCegarLoop]: Abstraction has 2818 states and 4354 transitions. [2021-10-28 09:13:36,763 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 09:13:36,764 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2818 states and 4354 transitions. [2021-10-28 09:13:36,796 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2816 [2021-10-28 09:13:36,796 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:13:36,796 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:13:36,800 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:13:36,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:13:36,801 INFO L791 eck$LassoCheckResult]: Stem: 8576#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 8562#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_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, 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_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~p15~0, main_~lk15~0, 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;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;main_~p15~0 := main_#t~nondet21;havoc main_#t~nondet21;havoc main_~lk15~0;havoc main_~cond~0; 8563#L225-1 [2021-10-28 09:13:36,801 INFO L793 eck$LassoCheckResult]: Loop: 8563#L225-1 assume !false;main_~cond~0 := main_#t~nondet22;havoc main_#t~nondet22; 8727#L58 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;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0;main_~lk15~0 := 0; 8725#L93 assume !(0 != main_~p1~0); 8724#L93-2 assume !(0 != main_~p2~0); 8718#L97-1 assume !(0 != main_~p3~0); 8719#L101-1 assume !(0 != main_~p4~0); 8825#L105-1 assume !(0 != main_~p5~0); 8822#L109-1 assume !(0 != main_~p6~0); 8818#L113-1 assume !(0 != main_~p7~0); 8816#L117-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 8815#L121-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 8812#L125-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 8809#L129-1 assume !(0 != main_~p11~0); 8806#L133-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 8802#L137-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 8798#L141-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 8793#L145-1 assume 0 != main_~p15~0;main_~lk15~0 := 1; 8787#L149-1 assume !(0 != main_~p1~0); 8781#L155-1 assume !(0 != main_~p2~0); 8776#L160-1 assume !(0 != main_~p3~0); 8769#L165-1 assume !(0 != main_~p4~0); 8763#L170-1 assume !(0 != main_~p5~0); 8758#L175-1 assume !(0 != main_~p6~0); 8756#L180-1 assume !(0 != main_~p7~0); 8750#L185-1 assume !(0 != main_~p8~0); 8747#L190-1 assume !(0 != main_~p9~0); 8743#L195-1 assume !(0 != main_~p10~0); 8737#L200-1 assume !(0 != main_~p11~0); 8735#L205-1 assume !(0 != main_~p12~0); 8733#L210-1 assume !(0 != main_~p13~0); 8731#L215-1 assume !(0 != main_~p14~0); 8729#L220-1 assume !(0 != main_~p15~0); 8563#L225-1 [2021-10-28 09:13:36,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:36,802 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2021-10-28 09:13:36,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:36,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703941662] [2021-10-28 09:13:36,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:36,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:36,831 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:13:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:36,847 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:13:36,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:36,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1170224198, now seen corresponding path program 1 times [2021-10-28 09:13:36,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:36,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673992023] [2021-10-28 09:13:36,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:36,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:13:36,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:13:36,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:13:36,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673992023] [2021-10-28 09:13:36,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673992023] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:13:36,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:13:36,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:13:36,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736817006] [2021-10-28 09:13:36,896 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:13:36,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:36,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:13:36,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:13:36,897 INFO L87 Difference]: Start difference. First operand 2818 states and 4354 transitions. cyclomatic complexity: 1600 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:36,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:36,980 INFO L93 Difference]: Finished difference Result 5570 states and 8514 transitions. [2021-10-28 09:13:36,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:13:36,981 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5570 states and 8514 transitions. [2021-10-28 09:13:37,055 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5568 [2021-10-28 09:13:37,112 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5570 states to 5570 states and 8514 transitions. [2021-10-28 09:13:37,113 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5570 [2021-10-28 09:13:37,120 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5570 [2021-10-28 09:13:37,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5570 states and 8514 transitions. [2021-10-28 09:13:37,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:13:37,143 INFO L681 BuchiCegarLoop]: Abstraction has 5570 states and 8514 transitions. [2021-10-28 09:13:37,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5570 states and 8514 transitions. [2021-10-28 09:13:37,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5570 to 5570. [2021-10-28 09:13:37,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5570 states, 5570 states have (on average 1.5285457809694794) internal successors, (8514), 5569 states have internal predecessors, (8514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:37,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5570 states to 5570 states and 8514 transitions. [2021-10-28 09:13:37,422 INFO L704 BuchiCegarLoop]: Abstraction has 5570 states and 8514 transitions. [2021-10-28 09:13:37,422 INFO L587 BuchiCegarLoop]: Abstraction has 5570 states and 8514 transitions. [2021-10-28 09:13:37,423 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 09:13:37,423 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5570 states and 8514 transitions. [2021-10-28 09:13:37,465 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5568 [2021-10-28 09:13:37,466 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:13:37,466 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:13:37,467 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:13:37,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:13:37,467 INFO L791 eck$LassoCheckResult]: Stem: 16963#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 16949#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_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, 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_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~p15~0, main_~lk15~0, 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;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;main_~p15~0 := main_#t~nondet21;havoc main_#t~nondet21;havoc main_~lk15~0;havoc main_~cond~0; 16950#L225-1 [2021-10-28 09:13:37,468 INFO L793 eck$LassoCheckResult]: Loop: 16950#L225-1 assume !false;main_~cond~0 := main_#t~nondet22;havoc main_#t~nondet22; 17206#L58 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;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0;main_~lk15~0 := 0; 17200#L93 assume !(0 != main_~p1~0); 17196#L93-2 assume !(0 != main_~p2~0); 17193#L97-1 assume !(0 != main_~p3~0); 17187#L101-1 assume !(0 != main_~p4~0); 17181#L105-1 assume !(0 != main_~p5~0); 17177#L109-1 assume !(0 != main_~p6~0); 17172#L113-1 assume !(0 != main_~p7~0); 17166#L117-1 assume !(0 != main_~p8~0); 17167#L121-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 17154#L125-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 17155#L129-1 assume !(0 != main_~p11~0); 17146#L133-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 17147#L137-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 17138#L141-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 17139#L145-1 assume 0 != main_~p15~0;main_~lk15~0 := 1; 17128#L149-1 assume !(0 != main_~p1~0); 17129#L155-1 assume !(0 != main_~p2~0); 17118#L160-1 assume !(0 != main_~p3~0); 17117#L165-1 assume !(0 != main_~p4~0); 17104#L170-1 assume !(0 != main_~p5~0); 17105#L175-1 assume !(0 != main_~p6~0); 17095#L180-1 assume !(0 != main_~p7~0); 17096#L185-1 assume !(0 != main_~p8~0); 17248#L190-1 assume !(0 != main_~p9~0); 17244#L195-1 assume !(0 != main_~p10~0); 17240#L200-1 assume !(0 != main_~p11~0); 17234#L205-1 assume !(0 != main_~p12~0); 17228#L210-1 assume !(0 != main_~p13~0); 17222#L215-1 assume !(0 != main_~p14~0); 17216#L220-1 assume !(0 != main_~p15~0); 16950#L225-1 [2021-10-28 09:13:37,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:37,469 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2021-10-28 09:13:37,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:37,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522446188] [2021-10-28 09:13:37,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:37,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:37,490 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:13:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:37,513 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:13:37,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:37,513 INFO L85 PathProgramCache]: Analyzing trace with hash -635214136, now seen corresponding path program 1 times [2021-10-28 09:13:37,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:37,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594380426] [2021-10-28 09:13:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:37,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:13:37,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:13:37,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:13:37,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594380426] [2021-10-28 09:13:37,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594380426] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:13:37,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:13:37,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:13:37,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916828891] [2021-10-28 09:13:37,570 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:13:37,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:37,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:13:37,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:13:37,572 INFO L87 Difference]: Start difference. First operand 5570 states and 8514 transitions. cyclomatic complexity: 3072 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:37,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:37,676 INFO L93 Difference]: Finished difference Result 11010 states and 16642 transitions. [2021-10-28 09:13:37,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:13:37,677 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11010 states and 16642 transitions. [2021-10-28 09:13:37,892 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 11008 [2021-10-28 09:13:37,993 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11010 states to 11010 states and 16642 transitions. [2021-10-28 09:13:37,993 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11010 [2021-10-28 09:13:38,005 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11010 [2021-10-28 09:13:38,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11010 states and 16642 transitions. [2021-10-28 09:13:38,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:13:38,028 INFO L681 BuchiCegarLoop]: Abstraction has 11010 states and 16642 transitions. [2021-10-28 09:13:38,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11010 states and 16642 transitions. [2021-10-28 09:13:38,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11010 to 11010. [2021-10-28 09:13:38,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11010 states, 11010 states have (on average 1.5115349682107175) internal successors, (16642), 11009 states have internal predecessors, (16642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:38,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11010 states to 11010 states and 16642 transitions. [2021-10-28 09:13:38,355 INFO L704 BuchiCegarLoop]: Abstraction has 11010 states and 16642 transitions. [2021-10-28 09:13:38,355 INFO L587 BuchiCegarLoop]: Abstraction has 11010 states and 16642 transitions. [2021-10-28 09:13:38,355 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 09:13:38,355 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11010 states and 16642 transitions. [2021-10-28 09:13:38,491 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 11008 [2021-10-28 09:13:38,491 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:13:38,491 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:13:38,492 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:13:38,492 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:13:38,492 INFO L791 eck$LassoCheckResult]: Stem: 33547#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 33535#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_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, 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_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~p15~0, main_~lk15~0, 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;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;main_~p15~0 := main_#t~nondet21;havoc main_#t~nondet21;havoc main_~lk15~0;havoc main_~cond~0; 33536#L225-1 [2021-10-28 09:13:38,495 INFO L793 eck$LassoCheckResult]: Loop: 33536#L225-1 assume !false;main_~cond~0 := main_#t~nondet22;havoc main_#t~nondet22; 34190#L58 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;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0;main_~lk15~0 := 0; 34191#L93 assume !(0 != main_~p1~0); 34313#L93-2 assume !(0 != main_~p2~0); 34311#L97-1 assume !(0 != main_~p3~0); 34307#L101-1 assume !(0 != main_~p4~0); 34304#L105-1 assume !(0 != main_~p5~0); 34302#L109-1 assume !(0 != main_~p6~0); 34298#L113-1 assume !(0 != main_~p7~0); 34294#L117-1 assume !(0 != main_~p8~0); 34290#L121-1 assume !(0 != main_~p9~0); 34288#L125-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 34286#L129-1 assume !(0 != main_~p11~0); 34284#L133-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 34282#L137-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 34280#L141-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 34278#L145-1 assume 0 != main_~p15~0;main_~lk15~0 := 1; 34274#L149-1 assume !(0 != main_~p1~0); 34270#L155-1 assume !(0 != main_~p2~0); 34267#L160-1 assume !(0 != main_~p3~0); 34262#L165-1 assume !(0 != main_~p4~0); 34258#L170-1 assume !(0 != main_~p5~0); 34256#L175-1 assume !(0 != main_~p6~0); 34233#L180-1 assume !(0 != main_~p7~0); 34234#L185-1 assume !(0 != main_~p8~0); 34227#L190-1 assume !(0 != main_~p9~0); 34229#L195-1 assume !(0 != main_~p10~0); 34223#L200-1 assume !(0 != main_~p11~0); 34222#L205-1 assume !(0 != main_~p12~0); 34217#L210-1 assume !(0 != main_~p13~0); 34216#L215-1 assume !(0 != main_~p14~0); 34208#L220-1 assume !(0 != main_~p15~0); 33536#L225-1 [2021-10-28 09:13:38,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:38,495 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2021-10-28 09:13:38,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:38,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567018715] [2021-10-28 09:13:38,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:38,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:38,508 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:13:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:38,522 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:13:38,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:38,523 INFO L85 PathProgramCache]: Analyzing trace with hash -416359418, now seen corresponding path program 1 times [2021-10-28 09:13:38,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:38,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356609139] [2021-10-28 09:13:38,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:38,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:13:38,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:13:38,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:13:38,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356609139] [2021-10-28 09:13:38,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356609139] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:13:38,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:13:38,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:13:38,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391015111] [2021-10-28 09:13:38,560 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:13:38,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:38,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:13:38,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:13:38,562 INFO L87 Difference]: Start difference. First operand 11010 states and 16642 transitions. cyclomatic complexity: 5888 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:38,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:38,873 INFO L93 Difference]: Finished difference Result 21762 states and 32514 transitions. [2021-10-28 09:13:38,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:13:38,874 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21762 states and 32514 transitions. [2021-10-28 09:13:39,051 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 21760 [2021-10-28 09:13:39,184 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21762 states to 21762 states and 32514 transitions. [2021-10-28 09:13:39,184 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21762 [2021-10-28 09:13:39,209 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21762 [2021-10-28 09:13:39,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21762 states and 32514 transitions. [2021-10-28 09:13:39,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:13:39,252 INFO L681 BuchiCegarLoop]: Abstraction has 21762 states and 32514 transitions. [2021-10-28 09:13:39,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21762 states and 32514 transitions. [2021-10-28 09:13:39,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21762 to 21762. [2021-10-28 09:13:39,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21762 states, 21762 states have (on average 1.4940722360077199) internal successors, (32514), 21761 states have internal predecessors, (32514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:40,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21762 states to 21762 states and 32514 transitions. [2021-10-28 09:13:40,028 INFO L704 BuchiCegarLoop]: Abstraction has 21762 states and 32514 transitions. [2021-10-28 09:13:40,028 INFO L587 BuchiCegarLoop]: Abstraction has 21762 states and 32514 transitions. [2021-10-28 09:13:40,028 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 09:13:40,029 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21762 states and 32514 transitions. [2021-10-28 09:13:40,117 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 21760 [2021-10-28 09:13:40,117 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:13:40,118 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:13:40,118 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:13:40,119 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:13:40,119 INFO L791 eck$LassoCheckResult]: Stem: 66322#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 66310#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_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, 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_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~p15~0, main_~lk15~0, 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;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;main_~p15~0 := main_#t~nondet21;havoc main_#t~nondet21;havoc main_~lk15~0;havoc main_~cond~0; 66311#L225-1 [2021-10-28 09:13:40,119 INFO L793 eck$LassoCheckResult]: Loop: 66311#L225-1 assume !false;main_~cond~0 := main_#t~nondet22;havoc main_#t~nondet22; 66629#L58 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;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0;main_~lk15~0 := 0; 66630#L93 assume !(0 != main_~p1~0); 66617#L93-2 assume !(0 != main_~p2~0); 66619#L97-1 assume !(0 != main_~p3~0); 66606#L101-1 assume !(0 != main_~p4~0); 66608#L105-1 assume !(0 != main_~p5~0); 66710#L109-1 assume !(0 != main_~p6~0); 66708#L113-1 assume !(0 != main_~p7~0); 66705#L117-1 assume !(0 != main_~p8~0); 66702#L121-1 assume !(0 != main_~p9~0); 66700#L125-1 assume !(0 != main_~p10~0); 66699#L129-1 assume !(0 != main_~p11~0); 66698#L133-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 66697#L137-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 66696#L141-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 66694#L145-1 assume 0 != main_~p15~0;main_~lk15~0 := 1; 66691#L149-1 assume !(0 != main_~p1~0); 66688#L155-1 assume !(0 != main_~p2~0); 66686#L160-1 assume !(0 != main_~p3~0); 66530#L165-1 assume !(0 != main_~p4~0); 66531#L170-1 assume !(0 != main_~p5~0); 66516#L175-1 assume !(0 != main_~p6~0); 66517#L180-1 assume !(0 != main_~p7~0); 66683#L185-1 assume !(0 != main_~p8~0); 66671#L190-1 assume !(0 != main_~p9~0); 66673#L195-1 assume !(0 != main_~p10~0); 66661#L200-1 assume !(0 != main_~p11~0); 66660#L205-1 assume !(0 != main_~p12~0); 66651#L210-1 assume !(0 != main_~p13~0); 66650#L215-1 assume !(0 != main_~p14~0); 66639#L220-1 assume !(0 != main_~p15~0); 66311#L225-1 [2021-10-28 09:13:40,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:40,120 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 10 times [2021-10-28 09:13:40,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:40,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041628860] [2021-10-28 09:13:40,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:40,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:40,129 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:13:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:40,274 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:13:40,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:40,279 INFO L85 PathProgramCache]: Analyzing trace with hash 6342408, now seen corresponding path program 1 times [2021-10-28 09:13:40,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:40,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653562520] [2021-10-28 09:13:40,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:40,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:13:40,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:13:40,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:13:40,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653562520] [2021-10-28 09:13:40,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653562520] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:13:40,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:13:40,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:13:40,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787160593] [2021-10-28 09:13:40,328 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:13:40,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:40,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:13:40,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:13:40,330 INFO L87 Difference]: Start difference. First operand 21762 states and 32514 transitions. cyclomatic complexity: 11264 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:40,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:40,606 INFO L93 Difference]: Finished difference Result 43010 states and 63490 transitions. [2021-10-28 09:13:40,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:13:40,606 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43010 states and 63490 transitions. [2021-10-28 09:13:40,879 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 43008 [2021-10-28 09:13:41,259 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43010 states to 43010 states and 63490 transitions. [2021-10-28 09:13:41,260 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43010 [2021-10-28 09:13:41,306 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43010 [2021-10-28 09:13:41,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43010 states and 63490 transitions. [2021-10-28 09:13:41,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:13:41,453 INFO L681 BuchiCegarLoop]: Abstraction has 43010 states and 63490 transitions. [2021-10-28 09:13:41,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43010 states and 63490 transitions. [2021-10-28 09:13:42,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43010 to 43010. [2021-10-28 09:13:42,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43010 states, 43010 states have (on average 1.4761683329458266) internal successors, (63490), 43009 states have internal predecessors, (63490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:42,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43010 states to 43010 states and 63490 transitions. [2021-10-28 09:13:42,473 INFO L704 BuchiCegarLoop]: Abstraction has 43010 states and 63490 transitions. [2021-10-28 09:13:42,473 INFO L587 BuchiCegarLoop]: Abstraction has 43010 states and 63490 transitions. [2021-10-28 09:13:42,474 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-28 09:13:42,474 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43010 states and 63490 transitions. [2021-10-28 09:13:42,880 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 43008 [2021-10-28 09:13:42,880 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:13:42,880 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:13:42,882 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:13:42,882 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:13:42,883 INFO L791 eck$LassoCheckResult]: Stem: 131098#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 131087#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_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, 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_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~p15~0, main_~lk15~0, 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;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;main_~p15~0 := main_#t~nondet21;havoc main_#t~nondet21;havoc main_~lk15~0;havoc main_~cond~0; 131088#L225-1 [2021-10-28 09:13:42,883 INFO L793 eck$LassoCheckResult]: Loop: 131088#L225-1 assume !false;main_~cond~0 := main_#t~nondet22;havoc main_#t~nondet22; 131568#L58 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;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0;main_~lk15~0 := 0; 131565#L93 assume !(0 != main_~p1~0); 131561#L93-2 assume !(0 != main_~p2~0); 131558#L97-1 assume !(0 != main_~p3~0); 131547#L101-1 assume !(0 != main_~p4~0); 131536#L105-1 assume !(0 != main_~p5~0); 131527#L109-1 assume !(0 != main_~p6~0); 131517#L113-1 assume !(0 != main_~p7~0); 131511#L117-1 assume !(0 != main_~p8~0); 131505#L121-1 assume !(0 != main_~p9~0); 131498#L125-1 assume !(0 != main_~p10~0); 131493#L129-1 assume !(0 != main_~p11~0); 131423#L133-1 assume !(0 != main_~p12~0); 131424#L137-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 131409#L141-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 131410#L145-1 assume 0 != main_~p15~0;main_~lk15~0 := 1; 131392#L149-1 assume !(0 != main_~p1~0); 131393#L155-1 assume !(0 != main_~p2~0); 131373#L160-1 assume !(0 != main_~p3~0); 131372#L165-1 assume !(0 != main_~p4~0); 131349#L170-1 assume !(0 != main_~p5~0); 131350#L175-1 assume !(0 != main_~p6~0); 131327#L180-1 assume !(0 != main_~p7~0); 131328#L185-1 assume !(0 != main_~p8~0); 131309#L190-1 assume !(0 != main_~p9~0); 131311#L195-1 assume !(0 != main_~p10~0); 131469#L200-1 assume !(0 != main_~p11~0); 131464#L205-1 assume !(0 != main_~p12~0); 131465#L210-1 assume !(0 != main_~p13~0); 131576#L215-1 assume !(0 != main_~p14~0); 131573#L220-1 assume !(0 != main_~p15~0); 131088#L225-1 [2021-10-28 09:13:42,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:42,886 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 11 times [2021-10-28 09:13:42,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:42,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093653494] [2021-10-28 09:13:42,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:42,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:42,895 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:13:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:42,913 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:13:42,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:42,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1682601334, now seen corresponding path program 1 times [2021-10-28 09:13:42,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:42,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725489851] [2021-10-28 09:13:42,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:42,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:13:42,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:13:42,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:13:42,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725489851] [2021-10-28 09:13:42,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725489851] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:13:42,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:13:42,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:13:42,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819095156] [2021-10-28 09:13:42,957 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:13:42,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:42,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:13:42,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:13:42,958 INFO L87 Difference]: Start difference. First operand 43010 states and 63490 transitions. cyclomatic complexity: 21504 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:43,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:43,365 INFO L93 Difference]: Finished difference Result 84994 states and 123906 transitions. [2021-10-28 09:13:43,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:13:43,366 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84994 states and 123906 transitions. [2021-10-28 09:13:44,020 INFO L131 ngComponentsAnalysis]: Automaton has 2048 accepting balls. 84992 [2021-10-28 09:13:44,348 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84994 states to 84994 states and 123906 transitions. [2021-10-28 09:13:44,348 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 84994 [2021-10-28 09:13:44,532 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 84994 [2021-10-28 09:13:44,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84994 states and 123906 transitions. [2021-10-28 09:13:44,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:13:44,606 INFO L681 BuchiCegarLoop]: Abstraction has 84994 states and 123906 transitions. [2021-10-28 09:13:44,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84994 states and 123906 transitions. [2021-10-28 09:13:46,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84994 to 84994. [2021-10-28 09:13:46,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84994 states, 84994 states have (on average 1.4578205520389675) internal successors, (123906), 84993 states have internal predecessors, (123906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:46,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84994 states to 84994 states and 123906 transitions. [2021-10-28 09:13:46,554 INFO L704 BuchiCegarLoop]: Abstraction has 84994 states and 123906 transitions. [2021-10-28 09:13:46,556 INFO L587 BuchiCegarLoop]: Abstraction has 84994 states and 123906 transitions. [2021-10-28 09:13:46,556 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-28 09:13:46,556 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 84994 states and 123906 transitions. [2021-10-28 09:13:46,819 INFO L131 ngComponentsAnalysis]: Automaton has 2048 accepting balls. 84992 [2021-10-28 09:13:46,819 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:13:46,819 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:13:46,821 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:13:46,821 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:13:46,821 INFO L791 eck$LassoCheckResult]: Stem: 259116#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 259105#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_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, 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_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~p15~0, main_~lk15~0, 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;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;main_~p15~0 := main_#t~nondet21;havoc main_#t~nondet21;havoc main_~lk15~0;havoc main_~cond~0; 259106#L225-1 [2021-10-28 09:13:46,821 INFO L793 eck$LassoCheckResult]: Loop: 259106#L225-1 assume !false;main_~cond~0 := main_#t~nondet22;havoc main_#t~nondet22; 260093#L58 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;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0;main_~lk15~0 := 0; 260071#L93 assume !(0 != main_~p1~0); 260073#L93-2 assume !(0 != main_~p2~0); 260053#L97-1 assume !(0 != main_~p3~0); 260054#L101-1 assume !(0 != main_~p4~0); 260027#L105-1 assume !(0 != main_~p5~0); 260029#L109-1 assume !(0 != main_~p6~0); 260313#L113-1 assume !(0 != main_~p7~0); 260283#L117-1 assume !(0 != main_~p8~0); 260285#L121-1 assume !(0 != main_~p9~0); 260309#L125-1 assume !(0 != main_~p10~0); 260308#L129-1 assume !(0 != main_~p11~0); 260306#L133-1 assume !(0 != main_~p12~0); 260304#L137-1 assume !(0 != main_~p13~0); 260302#L141-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 260300#L145-1 assume 0 != main_~p15~0;main_~lk15~0 := 1; 260297#L149-1 assume !(0 != main_~p1~0); 260293#L155-1 assume !(0 != main_~p2~0); 260290#L160-1 assume !(0 != main_~p3~0); 260225#L165-1 assume !(0 != main_~p4~0); 260226#L170-1 assume !(0 != main_~p5~0); 260202#L175-1 assume !(0 != main_~p6~0); 260204#L180-1 assume !(0 != main_~p7~0); 260181#L185-1 assume !(0 != main_~p8~0); 260182#L190-1 assume !(0 != main_~p9~0); 260176#L195-1 assume !(0 != main_~p10~0); 260178#L200-1 assume !(0 != main_~p11~0); 260125#L205-1 assume !(0 != main_~p12~0); 260127#L210-1 assume !(0 != main_~p13~0); 260112#L215-1 assume !(0 != main_~p14~0); 260111#L220-1 assume !(0 != main_~p15~0); 259106#L225-1 [2021-10-28 09:13:46,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:46,822 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 12 times [2021-10-28 09:13:46,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:46,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509075528] [2021-10-28 09:13:46,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:46,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:46,829 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:13:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:46,838 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:13:46,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:46,839 INFO L85 PathProgramCache]: Analyzing trace with hash 618221256, now seen corresponding path program 1 times [2021-10-28 09:13:46,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:46,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957111143] [2021-10-28 09:13:46,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:46,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:13:46,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:13:46,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:13:46,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957111143] [2021-10-28 09:13:46,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957111143] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:13:46,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:13:46,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:13:46,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811405961] [2021-10-28 09:13:46,865 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:13:46,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:46,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:13:46,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:13:46,867 INFO L87 Difference]: Start difference. First operand 84994 states and 123906 transitions. cyclomatic complexity: 40960 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:47,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:47,754 INFO L93 Difference]: Finished difference Result 167938 states and 241666 transitions. [2021-10-28 09:13:47,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:13:47,754 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 167938 states and 241666 transitions. [2021-10-28 09:13:49,062 INFO L131 ngComponentsAnalysis]: Automaton has 4096 accepting balls. 167936 [2021-10-28 09:13:49,477 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 167938 states to 167938 states and 241666 transitions. [2021-10-28 09:13:49,477 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 167938 [2021-10-28 09:13:49,560 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 167938 [2021-10-28 09:13:49,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 167938 states and 241666 transitions. [2021-10-28 09:13:49,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:13:49,730 INFO L681 BuchiCegarLoop]: Abstraction has 167938 states and 241666 transitions. [2021-10-28 09:13:49,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167938 states and 241666 transitions. [2021-10-28 09:13:51,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167938 to 167938. [2021-10-28 09:13:52,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167938 states, 167938 states have (on average 1.4390191618335337) internal successors, (241666), 167937 states have internal predecessors, (241666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:52,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167938 states to 167938 states and 241666 transitions. [2021-10-28 09:13:52,423 INFO L704 BuchiCegarLoop]: Abstraction has 167938 states and 241666 transitions. [2021-10-28 09:13:52,423 INFO L587 BuchiCegarLoop]: Abstraction has 167938 states and 241666 transitions. [2021-10-28 09:13:52,423 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-10-28 09:13:52,423 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167938 states and 241666 transitions. [2021-10-28 09:13:53,810 INFO L131 ngComponentsAnalysis]: Automaton has 4096 accepting balls. 167936 [2021-10-28 09:13:53,810 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:13:53,810 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:13:53,812 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:13:53,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:13:53,812 INFO L791 eck$LassoCheckResult]: Stem: 512052#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 512037#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_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, 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_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~p15~0, main_~lk15~0, 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;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;main_~p15~0 := main_#t~nondet21;havoc main_#t~nondet21;havoc main_~lk15~0;havoc main_~cond~0; 512038#L225-1 [2021-10-28 09:13:53,813 INFO L793 eck$LassoCheckResult]: Loop: 512038#L225-1 assume !false;main_~cond~0 := main_#t~nondet22;havoc main_#t~nondet22; 512371#L58 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;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0;main_~lk15~0 := 0; 512369#L93 assume !(0 != main_~p1~0); 512367#L93-2 assume !(0 != main_~p2~0); 512366#L97-1 assume !(0 != main_~p3~0); 512364#L101-1 assume !(0 != main_~p4~0); 512362#L105-1 assume !(0 != main_~p5~0); 512360#L109-1 assume !(0 != main_~p6~0); 512358#L113-1 assume !(0 != main_~p7~0); 512356#L117-1 assume !(0 != main_~p8~0); 512354#L121-1 assume !(0 != main_~p9~0); 512352#L125-1 assume !(0 != main_~p10~0); 512351#L129-1 assume !(0 != main_~p11~0); 512349#L133-1 assume !(0 != main_~p12~0); 512345#L137-1 assume !(0 != main_~p13~0); 512343#L141-1 assume !(0 != main_~p14~0); 512340#L145-1 assume 0 != main_~p15~0;main_~lk15~0 := 1; 512336#L149-1 assume !(0 != main_~p1~0); 512330#L155-1 assume !(0 != main_~p2~0); 512325#L160-1 assume !(0 != main_~p3~0); 512318#L165-1 assume !(0 != main_~p4~0); 512312#L170-1 assume !(0 != main_~p5~0); 512306#L175-1 assume !(0 != main_~p6~0); 512300#L180-1 assume !(0 != main_~p7~0); 512294#L185-1 assume !(0 != main_~p8~0); 512288#L190-1 assume !(0 != main_~p9~0); 512282#L195-1 assume !(0 != main_~p10~0); 512277#L200-1 assume !(0 != main_~p11~0); 512270#L205-1 assume !(0 != main_~p12~0); 512261#L210-1 assume !(0 != main_~p13~0); 512262#L215-1 assume !(0 != main_~p14~0); 512373#L220-1 assume !(0 != main_~p15~0); 512038#L225-1 [2021-10-28 09:13:53,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:53,813 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 13 times [2021-10-28 09:13:53,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:53,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854465378] [2021-10-28 09:13:53,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:53,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:53,821 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:13:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:13:53,829 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:13:53,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:53,830 INFO L85 PathProgramCache]: Analyzing trace with hash -970126646, now seen corresponding path program 1 times [2021-10-28 09:13:53,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:53,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614882381] [2021-10-28 09:13:53,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:53,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:13:53,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:13:53,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:13:53,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614882381] [2021-10-28 09:13:53,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614882381] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:13:53,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:13:53,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:13:53,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802507225] [2021-10-28 09:13:53,853 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:13:53,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:53,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:13:53,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:13:53,855 INFO L87 Difference]: Start difference. First operand 167938 states and 241666 transitions. cyclomatic complexity: 77824 Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:55,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:55,447 INFO L93 Difference]: Finished difference Result 331778 states and 471042 transitions. [2021-10-28 09:13:55,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:13:55,448 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 331778 states and 471042 transitions. [2021-10-28 09:13:57,123 INFO L131 ngComponentsAnalysis]: Automaton has 8192 accepting balls. 331776 [2021-10-28 09:13:59,041 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 331778 states to 331778 states and 471042 transitions. [2021-10-28 09:13:59,041 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 331778 [2021-10-28 09:13:59,164 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 331778 [2021-10-28 09:13:59,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 331778 states and 471042 transitions. [2021-10-28 09:13:59,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:13:59,274 INFO L681 BuchiCegarLoop]: Abstraction has 331778 states and 471042 transitions. [2021-10-28 09:13:59,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331778 states and 471042 transitions. [2021-10-28 09:14:03,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331778 to 331778. [2021-10-28 09:14:04,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331778 states, 331778 states have (on average 1.419750556094738) internal successors, (471042), 331777 states have internal predecessors, (471042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:05,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331778 states to 331778 states and 471042 transitions. [2021-10-28 09:14:05,002 INFO L704 BuchiCegarLoop]: Abstraction has 331778 states and 471042 transitions. [2021-10-28 09:14:05,002 INFO L587 BuchiCegarLoop]: Abstraction has 331778 states and 471042 transitions. [2021-10-28 09:14:05,002 INFO L425 BuchiCegarLoop]: ======== Iteration 14============ [2021-10-28 09:14:05,002 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 331778 states and 471042 transitions. [2021-10-28 09:14:07,414 INFO L131 ngComponentsAnalysis]: Automaton has 8192 accepting balls. 331776 [2021-10-28 09:14:07,415 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:14:07,415 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:14:07,419 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:14:07,419 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:07,420 INFO L791 eck$LassoCheckResult]: Stem: 1011773#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1011759#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_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, 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_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~p15~0, main_~lk15~0, 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;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;main_~p15~0 := main_#t~nondet21;havoc main_#t~nondet21;havoc main_~lk15~0;havoc main_~cond~0; 1011760#L225-1 [2021-10-28 09:14:07,420 INFO L793 eck$LassoCheckResult]: Loop: 1011760#L225-1 assume !false;main_~cond~0 := main_#t~nondet22;havoc main_#t~nondet22; 1012553#L58 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;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0;main_~lk15~0 := 0; 1012551#L93 assume !(0 != main_~p1~0); 1012549#L93-2 assume !(0 != main_~p2~0); 1012548#L97-1 assume !(0 != main_~p3~0); 1012546#L101-1 assume !(0 != main_~p4~0); 1012544#L105-1 assume !(0 != main_~p5~0); 1012545#L109-1 assume !(0 != main_~p6~0); 1012707#L113-1 assume !(0 != main_~p7~0); 1012702#L117-1 assume !(0 != main_~p8~0); 1012697#L121-1 assume !(0 != main_~p9~0); 1012691#L125-1 assume !(0 != main_~p10~0); 1012687#L129-1 assume !(0 != main_~p11~0); 1012683#L133-1 assume !(0 != main_~p12~0); 1012678#L137-1 assume !(0 != main_~p13~0); 1012674#L141-1 assume !(0 != main_~p14~0); 1012668#L145-1 assume !(0 != main_~p15~0); 1012661#L149-1 assume !(0 != main_~p1~0); 1012653#L155-1 assume !(0 != main_~p2~0); 1012642#L160-1 assume !(0 != main_~p3~0); 1012638#L165-1 assume !(0 != main_~p4~0); 1012636#L170-1 assume !(0 != main_~p5~0); 1012632#L175-1 assume !(0 != main_~p6~0); 1012628#L180-1 assume !(0 != main_~p7~0); 1012624#L185-1 assume !(0 != main_~p8~0); 1012620#L190-1 assume !(0 != main_~p9~0); 1012616#L195-1 assume !(0 != main_~p10~0); 1012570#L200-1 assume !(0 != main_~p11~0); 1012560#L205-1 assume !(0 != main_~p12~0); 1012558#L210-1 assume !(0 != main_~p13~0); 1012556#L215-1 assume !(0 != main_~p14~0); 1012554#L220-1 assume !(0 != main_~p15~0); 1011760#L225-1 [2021-10-28 09:14:07,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:07,421 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 14 times [2021-10-28 09:14:07,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:07,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104976998] [2021-10-28 09:14:07,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:07,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:14:07,429 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:14:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:14:07,438 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:14:07,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:07,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1991195000, now seen corresponding path program 1 times [2021-10-28 09:14:07,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:07,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382912324] [2021-10-28 09:14:07,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:07,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:14:07,444 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:14:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:14:07,455 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:14:07,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:07,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1845576266, now seen corresponding path program 1 times [2021-10-28 09:14:07,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:07,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891749962] [2021-10-28 09:14:07,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:07,457 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:14:07,465 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:14:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:14:07,482 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:14:08,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:14:08 BoogieIcfgContainer [2021-10-28 09:14:08,561 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:14:08,562 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:14:08,562 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:14:08,562 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:14:08,563 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:13:34" (3/4) ... [2021-10-28 09:14:08,567 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 09:14:08,640 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f9bc34-a78f-4e17-8f7c-be04cf3a129f/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:14:08,640 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:14:08,642 INFO L168 Benchmark]: Toolchain (without parser) took 35278.83 ms. Allocated memory was 94.4 MB in the beginning and 14.0 GB in the end (delta: 13.9 GB). Free memory was 59.1 MB in the beginning and 11.1 GB in the end (delta: -11.0 GB). Peak memory consumption was 2.9 GB. Max. memory is 16.1 GB. [2021-10-28 09:14:08,643 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory was 63.8 MB in the beginning and 63.7 MB in the end (delta: 32.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:14:08,644 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.95 ms. Allocated memory is still 94.4 MB. Free memory was 59.0 MB in the beginning and 69.3 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:14:08,644 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.87 ms. Allocated memory is still 94.4 MB. Free memory was 69.3 MB in the beginning and 67.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:14:08,645 INFO L168 Benchmark]: Boogie Preprocessor took 79.71 ms. Allocated memory is still 94.4 MB. Free memory was 67.3 MB in the beginning and 66.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:14:08,645 INFO L168 Benchmark]: RCFGBuilder took 538.37 ms. Allocated memory is still 94.4 MB. Free memory was 65.8 MB in the beginning and 52.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:14:08,645 INFO L168 Benchmark]: BuchiAutomizer took 34095.92 ms. Allocated memory was 94.4 MB in the beginning and 14.0 GB in the end (delta: 13.9 GB). Free memory was 52.6 MB in the beginning and 11.1 GB in the end (delta: -11.0 GB). Peak memory consumption was 2.9 GB. Max. memory is 16.1 GB. [2021-10-28 09:14:08,646 INFO L168 Benchmark]: Witness Printer took 78.36 ms. Allocated memory is still 14.0 GB. Free memory was 11.1 GB in the beginning and 11.1 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:14:08,648 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory was 63.8 MB in the beginning and 63.7 MB in the end (delta: 32.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 406.95 ms. Allocated memory is still 94.4 MB. Free memory was 59.0 MB in the beginning and 69.3 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.87 ms. Allocated memory is still 94.4 MB. Free memory was 69.3 MB in the beginning and 67.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.71 ms. Allocated memory is still 94.4 MB. Free memory was 67.3 MB in the beginning and 66.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 538.37 ms. Allocated memory is still 94.4 MB. Free memory was 65.8 MB in the beginning and 52.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 34095.92 ms. Allocated memory was 94.4 MB in the beginning and 14.0 GB in the end (delta: 13.9 GB). Free memory was 52.6 MB in the beginning and 11.1 GB in the end (delta: -11.0 GB). Peak memory consumption was 2.9 GB. Max. memory is 16.1 GB. * Witness Printer took 78.36 ms. Allocated memory is still 14.0 GB. Free memory was 11.1 GB in the beginning and 11.1 GB 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 13 terminating modules (13 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.13 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 331778 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 33.9s and 14 iterations. TraceHistogramMax:1. Analysis of lassos took 2.8s. Construction of modules took 0.1s. Büchi inclusion checks took 3.8s. Highest rank in rank-based complementation 0. Minimization of det autom 13. Minimization of nondet autom 0. Automata minimization 13.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 7.9s Buchi closure took 0.5s. Biggest automaton had 331778 states and ocurred in iteration 13. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 1530 SDtfs, 799 SDslu, 967 SDs, 0 SdLazy, 65 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI13 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: 56]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=24847} State at position 1 is {NULL=0, p1=0, p3=0, p5=0, NULL=24847, p10=0, p7=0, p9=0, lk12=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@70613732=0, lk14=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@343fea9f=0, p14=0, lk10=0, p12=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@16b7c9fe=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14fec6c9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@64699464=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5c52b4cd=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@40c2b3e9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@71be7ea7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@89f1f05=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43bf679b=0, NULL=0, NULL=0, lk3=0, lk5=0, NULL=0, lk1=0, lk7=0, lk9=0, NULL=24850, \result=0, p2=0, p4=0, p6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4cd11978=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@13fcfeb7=0, p8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4e0ff85e=0, lk13=0, p15=0, lk15=0, p13=0, p11=0, lk11=0, cond=10, NULL=24849, NULL=0, NULL=24848, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@74027e80=0, lk4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@16282647=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3e4a5a52=10, lk6=0, lk2=0, lk8=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 56]: 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; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L50] int p15 = __VERIFIER_nondet_int(); [L51] int lk15; [L54] int cond; Loop: [L56] COND TRUE 1 [L57] cond = __VERIFIER_nondet_int() [L58] COND FALSE !(cond == 0) [L61] lk1 = 0 [L63] lk2 = 0 [L65] lk3 = 0 [L67] lk4 = 0 [L69] lk5 = 0 [L71] lk6 = 0 [L73] lk7 = 0 [L75] lk8 = 0 [L77] lk9 = 0 [L79] lk10 = 0 [L81] lk11 = 0 [L83] lk12 = 0 [L85] lk13 = 0 [L87] lk14 = 0 [L89] lk15 = 0 [L93] COND FALSE !(p1 != 0) [L97] COND FALSE !(p2 != 0) [L101] COND FALSE !(p3 != 0) [L105] COND FALSE !(p4 != 0) [L109] COND FALSE !(p5 != 0) [L113] COND FALSE !(p6 != 0) [L117] COND FALSE !(p7 != 0) [L121] COND FALSE !(p8 != 0) [L125] COND FALSE !(p9 != 0) [L129] COND FALSE !(p10 != 0) [L133] COND FALSE !(p11 != 0) [L137] COND FALSE !(p12 != 0) [L141] COND FALSE !(p13 != 0) [L145] COND FALSE !(p14 != 0) [L149] COND FALSE !(p15 != 0) [L155] COND FALSE !(p1 != 0) [L160] COND FALSE !(p2 != 0) [L165] COND FALSE !(p3 != 0) [L170] COND FALSE !(p4 != 0) [L175] COND FALSE !(p5 != 0) [L180] COND FALSE !(p6 != 0) [L185] COND FALSE !(p7 != 0) [L190] COND FALSE !(p8 != 0) [L195] COND FALSE !(p9 != 0) [L200] COND FALSE !(p10 != 0) [L205] COND FALSE !(p11 != 0) [L210] COND FALSE !(p12 != 0) [L215] COND FALSE !(p13 != 0) [L220] COND FALSE !(p14 != 0) [L225] COND FALSE !(p15 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:14:08,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f9bc34-a78f-4e17-8f7c-be04cf3a129f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...