./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_12.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_6d45dc33-a792-448d-a8f6-1db96b775101/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d45dc33-a792-448d-a8f6-1db96b775101/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_6d45dc33-a792-448d-a8f6-1db96b775101/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d45dc33-a792-448d-a8f6-1db96b775101/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d45dc33-a792-448d-a8f6-1db96b775101/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_6d45dc33-a792-448d-a8f6-1db96b775101/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 12c3feea735c5360de013afbcf9aaa3880d39f75cbb7661493cccf003151044d ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:42:54,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:42:54,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:42:54,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:42:54,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:42:54,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:42:54,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:42:54,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:42:54,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:42:54,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:42:54,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:42:54,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:42:54,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:42:54,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:42:54,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:42:54,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:42:54,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:42:54,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:42:54,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:42:55,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:42:55,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:42:55,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:42:55,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:42:55,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:42:55,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:42:55,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:42:55,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:42:55,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:42:55,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:42:55,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:42:55,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:42:55,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:42:55,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:42:55,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:42:55,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:42:55,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:42:55,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:42:55,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:42:55,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:42:55,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:42:55,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:42:55,041 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d45dc33-a792-448d-a8f6-1db96b775101/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 08:42:55,091 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:42:55,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:42:55,092 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:42:55,092 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:42:55,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:42:55,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:42:55,095 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:42:55,095 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 08:42:55,095 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 08:42:55,096 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 08:42:55,097 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 08:42:55,097 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 08:42:55,097 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 08:42:55,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:42:55,098 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:42:55,098 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:42:55,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:42:55,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:42:55,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:42:55,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 08:42:55,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 08:42:55,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 08:42:55,100 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:42:55,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:42:55,100 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 08:42:55,100 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:42:55,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 08:42:55,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:42:55,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:42:55,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:42:55,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:42:55,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:42:55,103 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 08:42:55,104 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_6d45dc33-a792-448d-a8f6-1db96b775101/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d45dc33-a792-448d-a8f6-1db96b775101/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12c3feea735c5360de013afbcf9aaa3880d39f75cbb7661493cccf003151044d [2021-10-28 08:42:55,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:42:55,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:42:55,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:42:55,438 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:42:55,440 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:42:55,441 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d45dc33-a792-448d-a8f6-1db96b775101/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/locks/test_locks_12.c [2021-10-28 08:42:55,554 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d45dc33-a792-448d-a8f6-1db96b775101/bin/uautomizer-UnR33cPsHg/data/318d6cbd9/c376996aeea2458db8c7085f5da7fed4/FLAGcc1b5b9f6 [2021-10-28 08:42:55,983 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:42:55,984 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d45dc33-a792-448d-a8f6-1db96b775101/sv-benchmarks/c/locks/test_locks_12.c [2021-10-28 08:42:55,992 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d45dc33-a792-448d-a8f6-1db96b775101/bin/uautomizer-UnR33cPsHg/data/318d6cbd9/c376996aeea2458db8c7085f5da7fed4/FLAGcc1b5b9f6 [2021-10-28 08:42:56,394 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d45dc33-a792-448d-a8f6-1db96b775101/bin/uautomizer-UnR33cPsHg/data/318d6cbd9/c376996aeea2458db8c7085f5da7fed4 [2021-10-28 08:42:56,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:42:56,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:42:56,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:42:56,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:42:56,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:42:56,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:42:56" (1/1) ... [2021-10-28 08:42:56,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf039a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:56, skipping insertion in model container [2021-10-28 08:42:56,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:42:56" (1/1) ... [2021-10-28 08:42:56,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:42:56,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:42:56,627 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_6d45dc33-a792-448d-a8f6-1db96b775101/sv-benchmarks/c/locks/test_locks_12.c[4591,4604] [2021-10-28 08:42:56,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:42:56,636 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:42:56,663 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_6d45dc33-a792-448d-a8f6-1db96b775101/sv-benchmarks/c/locks/test_locks_12.c[4591,4604] [2021-10-28 08:42:56,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:42:56,677 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:42:56,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:56 WrapperNode [2021-10-28 08:42:56,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:42:56,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:42:56,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:42:56,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:42:56,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:56" (1/1) ... [2021-10-28 08:42:56,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:56" (1/1) ... [2021-10-28 08:42:56,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:42:56,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:42:56,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:42:56,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:42:56,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:56" (1/1) ... [2021-10-28 08:42:56,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:56" (1/1) ... [2021-10-28 08:42:56,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:56" (1/1) ... [2021-10-28 08:42:56,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:56" (1/1) ... [2021-10-28 08:42:56,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:56" (1/1) ... [2021-10-28 08:42:56,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:56" (1/1) ... [2021-10-28 08:42:56,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:56" (1/1) ... [2021-10-28 08:42:56,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:42:56,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:42:56,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:42:56,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:42:56,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:56" (1/1) ... [2021-10-28 08:42:56,758 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:42:56,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d45dc33-a792-448d-a8f6-1db96b775101/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:42:56,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d45dc33-a792-448d-a8f6-1db96b775101/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:42:56,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d45dc33-a792-448d-a8f6-1db96b775101/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 08:42:56,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:42:56,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:42:56,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:42:56,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:42:57,247 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:42:57,248 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 08:42:57,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:42:57 BoogieIcfgContainer [2021-10-28 08:42:57,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:42:57,251 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 08:42:57,252 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 08:42:57,255 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 08:42:57,256 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:42:57,256 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 08:42:56" (1/3) ... [2021-10-28 08:42:57,257 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@49692fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 08:42:57, skipping insertion in model container [2021-10-28 08:42:57,258 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:42:57,258 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:56" (2/3) ... [2021-10-28 08:42:57,258 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@49692fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 08:42:57, skipping insertion in model container [2021-10-28 08:42:57,259 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:42:57,259 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:42:57" (3/3) ... [2021-10-28 08:42:57,260 INFO L389 chiAutomizerObserver]: Analyzing ICFG test_locks_12.c [2021-10-28 08:42:57,308 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 08:42:57,309 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 08:42:57,309 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 08:42:57,309 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 08:42:57,309 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 08:42:57,310 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 08:42:57,310 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 08:42:57,311 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 08:42:57,333 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 45 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 44 states have internal predecessors, (83), 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 08:42:57,365 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-10-28 08:42:57,366 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:42:57,366 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:42:57,374 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 08:42:57,374 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] [2021-10-28 08:42:57,375 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 08:42:57,376 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 45 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 44 states have internal predecessors, (83), 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 08:42:57,385 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-10-28 08:42:57,385 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:42:57,386 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:42:57,387 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 08:42:57,388 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] [2021-10-28 08:42:57,397 INFO L791 eck$LassoCheckResult]: Stem: 25#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(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 7#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_~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_~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;havoc main_~cond~0; 34#L183-1true [2021-10-28 08:42:57,400 INFO L793 eck$LassoCheckResult]: Loop: 34#L183-1true assume !false;main_~cond~0 := main_#t~nondet19;havoc main_#t~nondet19; 18#L49true 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; 35#L78true assume 0 != main_~p1~0;main_~lk1~0 := 1; 15#L78-2true assume 0 != main_~p2~0;main_~lk2~0 := 1; 13#L82-1true assume !(0 != main_~p3~0); 9#L86-1true assume 0 != main_~p4~0;main_~lk4~0 := 1; 36#L90-1true assume 0 != main_~p5~0;main_~lk5~0 := 1; 12#L94-1true assume 0 != main_~p6~0;main_~lk6~0 := 1; 20#L98-1true assume 0 != main_~p7~0;main_~lk7~0 := 1; 33#L102-1true assume 0 != main_~p8~0;main_~lk8~0 := 1; 16#L106-1true assume 0 != main_~p9~0;main_~lk9~0 := 1; 26#L110-1true assume 0 != main_~p10~0;main_~lk10~0 := 1; 42#L114-1true assume !(0 != main_~p11~0); 31#L118-1true assume 0 != main_~p12~0;main_~lk12~0 := 1; 14#L122-1true assume !(0 != main_~p1~0); 28#L128-1true assume !(0 != main_~p2~0); 5#L133-1true assume !(0 != main_~p3~0); 4#L138-1true assume !(0 != main_~p4~0); 27#L143-1true assume !(0 != main_~p5~0); 6#L148-1true assume !(0 != main_~p6~0); 22#L153-1true assume !(0 != main_~p7~0); 39#L158-1true assume !(0 != main_~p8~0); 24#L163-1true assume !(0 != main_~p9~0); 41#L168-1true assume !(0 != main_~p10~0); 19#L173-1true assume !(0 != main_~p11~0); 8#L178-1true assume !(0 != main_~p12~0); 34#L183-1true [2021-10-28 08:42:57,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:57,407 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-28 08:42:57,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:57,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676333893] [2021-10-28 08:42:57,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:57,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:42:57,509 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:42:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:42:57,560 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:42:57,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:57,564 INFO L85 PathProgramCache]: Analyzing trace with hash -819199544, now seen corresponding path program 1 times [2021-10-28 08:42:57,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:57,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361568802] [2021-10-28 08:42:57,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:57,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:57,645 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 08:42:57,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:57,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361568802] [2021-10-28 08:42:57,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361568802] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:57,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:57,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:42:57,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447204379] [2021-10-28 08:42:57,652 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:42:57,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:57,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:42:57,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:42:57,679 INFO L87 Difference]: Start difference. First operand has 45 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 44 states have internal predecessors, (83), 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 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 08:42:57,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:57,724 INFO L93 Difference]: Finished difference Result 87 states and 154 transitions. [2021-10-28 08:42:57,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:42:57,728 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 87 states and 154 transitions. [2021-10-28 08:42:57,750 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-10-28 08:42:57,754 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 87 states to 77 states and 123 transitions. [2021-10-28 08:42:57,755 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2021-10-28 08:42:57,756 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2021-10-28 08:42:57,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 123 transitions. [2021-10-28 08:42:57,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:42:57,757 INFO L681 BuchiCegarLoop]: Abstraction has 77 states and 123 transitions. [2021-10-28 08:42:57,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 123 transitions. [2021-10-28 08:42:57,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-10-28 08:42:57,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 77 states have (on average 1.5974025974025974) internal successors, (123), 76 states have internal predecessors, (123), 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 08:42:57,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 123 transitions. [2021-10-28 08:42:57,792 INFO L704 BuchiCegarLoop]: Abstraction has 77 states and 123 transitions. [2021-10-28 08:42:57,793 INFO L587 BuchiCegarLoop]: Abstraction has 77 states and 123 transitions. [2021-10-28 08:42:57,793 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 08:42:57,793 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 77 states and 123 transitions. [2021-10-28 08:42:57,795 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-10-28 08:42:57,795 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:42:57,795 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:42:57,796 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 08:42:57,796 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] [2021-10-28 08:42:57,797 INFO L791 eck$LassoCheckResult]: Stem: 176#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 152#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;havoc main_~cond~0; 151#L183-1 [2021-10-28 08:42:57,797 INFO L793 eck$LassoCheckResult]: Loop: 151#L183-1 assume !false;main_~cond~0 := main_#t~nondet19;havoc main_#t~nondet19; 167#L49 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; 168#L78 assume !(0 != main_~p1~0); 196#L78-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 195#L82-1 assume !(0 != main_~p3~0); 153#L86-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 154#L90-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 194#L94-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 193#L98-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 192#L102-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 191#L106-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 190#L110-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 187#L114-1 assume !(0 != main_~p11~0); 188#L118-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 189#L122-1 assume !(0 != main_~p1~0); 179#L128-1 assume !(0 != main_~p2~0); 144#L133-1 assume !(0 != main_~p3~0); 141#L138-1 assume !(0 != main_~p4~0); 142#L143-1 assume !(0 != main_~p5~0); 146#L148-1 assume !(0 != main_~p6~0); 148#L153-1 assume !(0 != main_~p7~0); 156#L158-1 assume !(0 != main_~p8~0); 205#L163-1 assume !(0 != main_~p9~0); 185#L168-1 assume !(0 != main_~p10~0); 169#L173-1 assume !(0 != main_~p11~0); 149#L178-1 assume !(0 != main_~p12~0); 151#L183-1 [2021-10-28 08:42:57,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:57,798 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-10-28 08:42:57,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:57,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403855700] [2021-10-28 08:42:57,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:57,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:42:57,815 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:42:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:42:57,836 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:42:57,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:57,837 INFO L85 PathProgramCache]: Analyzing trace with hash -953213050, now seen corresponding path program 1 times [2021-10-28 08:42:57,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:57,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004524545] [2021-10-28 08:42:57,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:57,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:57,878 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 08:42:57,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:57,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004524545] [2021-10-28 08:42:57,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004524545] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:57,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:57,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:42:57,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877797207] [2021-10-28 08:42:57,880 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:42:57,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:57,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:42:57,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:42:57,882 INFO L87 Difference]: Start difference. First operand 77 states and 123 transitions. cyclomatic complexity: 48 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 08:42:57,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:57,913 INFO L93 Difference]: Finished difference Result 150 states and 238 transitions. [2021-10-28 08:42:57,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:42:57,914 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 150 states and 238 transitions. [2021-10-28 08:42:57,918 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 148 [2021-10-28 08:42:57,920 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 150 states to 150 states and 238 transitions. [2021-10-28 08:42:57,921 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 150 [2021-10-28 08:42:57,921 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 150 [2021-10-28 08:42:57,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 150 states and 238 transitions. [2021-10-28 08:42:57,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:42:57,923 INFO L681 BuchiCegarLoop]: Abstraction has 150 states and 238 transitions. [2021-10-28 08:42:57,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states and 238 transitions. [2021-10-28 08:42:57,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-10-28 08:42:57,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 150 states have (on average 1.5866666666666667) internal successors, (238), 149 states have internal predecessors, (238), 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 08:42:57,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 238 transitions. [2021-10-28 08:42:57,940 INFO L704 BuchiCegarLoop]: Abstraction has 150 states and 238 transitions. [2021-10-28 08:42:57,940 INFO L587 BuchiCegarLoop]: Abstraction has 150 states and 238 transitions. [2021-10-28 08:42:57,940 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 08:42:57,940 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 150 states and 238 transitions. [2021-10-28 08:42:57,943 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 148 [2021-10-28 08:42:57,943 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:42:57,943 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:42:57,944 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 08:42:57,944 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] [2021-10-28 08:42:57,945 INFO L791 eck$LassoCheckResult]: Stem: 414#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(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 386#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, 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_~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;havoc main_~cond~0; 387#L183-1 [2021-10-28 08:42:57,945 INFO L793 eck$LassoCheckResult]: Loop: 387#L183-1 assume !false;main_~cond~0 := main_#t~nondet19;havoc main_#t~nondet19; 405#L49 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; 406#L78 assume !(0 != main_~p1~0); 483#L78-2 assume !(0 != main_~p2~0); 396#L82-1 assume !(0 != main_~p3~0); 390#L86-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 391#L90-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 475#L94-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 471#L98-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 469#L102-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 466#L106-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 464#L110-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 427#L114-1 assume !(0 != main_~p11~0); 419#L118-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 420#L122-1 assume !(0 != main_~p1~0); 458#L128-1 assume !(0 != main_~p2~0); 377#L133-1 assume !(0 != main_~p3~0); 379#L138-1 assume !(0 != main_~p4~0); 448#L143-1 assume !(0 != main_~p5~0); 446#L148-1 assume !(0 != main_~p6~0); 444#L153-1 assume !(0 != main_~p7~0); 424#L158-1 assume !(0 != main_~p8~0); 409#L163-1 assume !(0 != main_~p9~0); 411#L168-1 assume !(0 != main_~p10~0); 439#L173-1 assume !(0 != main_~p11~0); 434#L178-1 assume !(0 != main_~p12~0); 387#L183-1 [2021-10-28 08:42:57,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:57,946 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-10-28 08:42:57,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:57,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127533386] [2021-10-28 08:42:57,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:57,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:42:57,976 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:42:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:42:58,002 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:42:58,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:58,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1536315912, now seen corresponding path program 1 times [2021-10-28 08:42:58,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:58,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497511662] [2021-10-28 08:42:58,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:58,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:58,082 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 08:42:58,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:58,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497511662] [2021-10-28 08:42:58,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497511662] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:58,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:58,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:42:58,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572479298] [2021-10-28 08:42:58,088 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:42:58,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:58,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:42:58,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:42:58,095 INFO L87 Difference]: Start difference. First operand 150 states and 238 transitions. cyclomatic complexity: 92 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 08:42:58,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:58,120 INFO L93 Difference]: Finished difference Result 294 states and 462 transitions. [2021-10-28 08:42:58,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:42:58,121 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 294 states and 462 transitions. [2021-10-28 08:42:58,127 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 292 [2021-10-28 08:42:58,131 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 294 states to 294 states and 462 transitions. [2021-10-28 08:42:58,132 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 294 [2021-10-28 08:42:58,133 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 294 [2021-10-28 08:42:58,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 294 states and 462 transitions. [2021-10-28 08:42:58,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:42:58,135 INFO L681 BuchiCegarLoop]: Abstraction has 294 states and 462 transitions. [2021-10-28 08:42:58,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states and 462 transitions. [2021-10-28 08:42:58,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2021-10-28 08:42:58,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 294 states have (on average 1.5714285714285714) internal successors, (462), 293 states have internal predecessors, (462), 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 08:42:58,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 462 transitions. [2021-10-28 08:42:58,159 INFO L704 BuchiCegarLoop]: Abstraction has 294 states and 462 transitions. [2021-10-28 08:42:58,159 INFO L587 BuchiCegarLoop]: Abstraction has 294 states and 462 transitions. [2021-10-28 08:42:58,159 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 08:42:58,159 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 294 states and 462 transitions. [2021-10-28 08:42:58,164 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 292 [2021-10-28 08:42:58,164 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:42:58,164 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:42:58,165 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 08:42:58,165 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] [2021-10-28 08:42:58,165 INFO L791 eck$LassoCheckResult]: Stem: 860#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 831#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;havoc main_~cond~0; 832#L183-1 [2021-10-28 08:42:58,166 INFO L793 eck$LassoCheckResult]: Loop: 832#L183-1 assume !false;main_~cond~0 := main_#t~nondet19;havoc main_#t~nondet19; 936#L49 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; 930#L78 assume !(0 != main_~p1~0); 931#L78-2 assume !(0 != main_~p2~0); 1011#L82-1 assume !(0 != main_~p3~0); 1007#L86-1 assume !(0 != main_~p4~0); 1004#L90-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 1001#L94-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 998#L98-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 995#L102-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 992#L106-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 989#L110-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 986#L114-1 assume !(0 != main_~p11~0); 981#L118-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 932#L122-1 assume !(0 != main_~p1~0); 933#L128-1 assume !(0 != main_~p2~0); 977#L133-1 assume !(0 != main_~p3~0); 972#L138-1 assume !(0 != main_~p4~0); 969#L143-1 assume !(0 != main_~p5~0); 965#L148-1 assume !(0 != main_~p6~0); 961#L153-1 assume !(0 != main_~p7~0); 957#L158-1 assume !(0 != main_~p8~0); 953#L163-1 assume !(0 != main_~p9~0); 949#L168-1 assume !(0 != main_~p10~0); 944#L173-1 assume !(0 != main_~p11~0); 941#L178-1 assume !(0 != main_~p12~0); 832#L183-1 [2021-10-28 08:42:58,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:58,166 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-10-28 08:42:58,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:58,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462503019] [2021-10-28 08:42:58,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:58,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:42:58,178 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:42:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:42:58,199 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:42:58,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:58,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1959017738, now seen corresponding path program 1 times [2021-10-28 08:42:58,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:58,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098460710] [2021-10-28 08:42:58,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:58,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:58,245 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 08:42:58,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:58,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098460710] [2021-10-28 08:42:58,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098460710] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:58,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:58,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:42:58,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244439307] [2021-10-28 08:42:58,247 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:42:58,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:58,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:42:58,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:42:58,248 INFO L87 Difference]: Start difference. First operand 294 states and 462 transitions. cyclomatic complexity: 176 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 08:42:58,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:58,284 INFO L93 Difference]: Finished difference Result 578 states and 898 transitions. [2021-10-28 08:42:58,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:42:58,285 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 578 states and 898 transitions. [2021-10-28 08:42:58,293 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 576 [2021-10-28 08:42:58,301 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 578 states to 578 states and 898 transitions. [2021-10-28 08:42:58,302 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 578 [2021-10-28 08:42:58,303 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 578 [2021-10-28 08:42:58,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 578 states and 898 transitions. [2021-10-28 08:42:58,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:42:58,308 INFO L681 BuchiCegarLoop]: Abstraction has 578 states and 898 transitions. [2021-10-28 08:42:58,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states and 898 transitions. [2021-10-28 08:42:58,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2021-10-28 08:42:58,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 578 states have (on average 1.5536332179930796) internal successors, (898), 577 states have internal predecessors, (898), 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 08:42:58,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 898 transitions. [2021-10-28 08:42:58,366 INFO L704 BuchiCegarLoop]: Abstraction has 578 states and 898 transitions. [2021-10-28 08:42:58,368 INFO L587 BuchiCegarLoop]: Abstraction has 578 states and 898 transitions. [2021-10-28 08:42:58,369 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 08:42:58,375 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 578 states and 898 transitions. [2021-10-28 08:42:58,380 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 576 [2021-10-28 08:42:58,380 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:42:58,380 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:42:58,381 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 08:42:58,382 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] [2021-10-28 08:42:58,382 INFO L791 eck$LassoCheckResult]: Stem: 1741#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(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1709#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_~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_~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;havoc main_~cond~0; 1710#L183-1 [2021-10-28 08:42:58,382 INFO L793 eck$LassoCheckResult]: Loop: 1710#L183-1 assume !false;main_~cond~0 := main_#t~nondet19;havoc main_#t~nondet19; 1939#L49 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; 1938#L78 assume !(0 != main_~p1~0); 1937#L78-2 assume !(0 != main_~p2~0); 1928#L82-1 assume !(0 != main_~p3~0); 1929#L86-1 assume !(0 != main_~p4~0); 1910#L90-1 assume !(0 != main_~p5~0); 1912#L94-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 1894#L98-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 1895#L102-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 1878#L106-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 1879#L110-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 1862#L114-1 assume !(0 != main_~p11~0); 1863#L118-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 1846#L122-1 assume !(0 != main_~p1~0); 1847#L128-1 assume !(0 != main_~p2~0); 1967#L133-1 assume !(0 != main_~p3~0); 1964#L138-1 assume !(0 != main_~p4~0); 1961#L143-1 assume !(0 != main_~p5~0); 1960#L148-1 assume !(0 != main_~p6~0); 1958#L153-1 assume !(0 != main_~p7~0); 1956#L158-1 assume !(0 != main_~p8~0); 1953#L163-1 assume !(0 != main_~p9~0); 1951#L168-1 assume !(0 != main_~p10~0); 1945#L173-1 assume !(0 != main_~p11~0); 1942#L178-1 assume !(0 != main_~p12~0); 1710#L183-1 [2021-10-28 08:42:58,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:58,383 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-10-28 08:42:58,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:58,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993223491] [2021-10-28 08:42:58,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:58,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:42:58,398 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:42:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:42:58,418 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:42:58,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:58,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1141369288, now seen corresponding path program 1 times [2021-10-28 08:42:58,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:58,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392767557] [2021-10-28 08:42:58,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:58,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:58,474 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 08:42:58,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:58,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392767557] [2021-10-28 08:42:58,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392767557] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:58,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:58,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:42:58,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942087435] [2021-10-28 08:42:58,476 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:42:58,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:58,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:42:58,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:42:58,477 INFO L87 Difference]: Start difference. First operand 578 states and 898 transitions. cyclomatic complexity: 336 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 08:42:58,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:58,513 INFO L93 Difference]: Finished difference Result 1138 states and 1746 transitions. [2021-10-28 08:42:58,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:42:58,514 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1138 states and 1746 transitions. [2021-10-28 08:42:58,538 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1136 [2021-10-28 08:42:58,549 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1138 states to 1138 states and 1746 transitions. [2021-10-28 08:42:58,549 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1138 [2021-10-28 08:42:58,550 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1138 [2021-10-28 08:42:58,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1138 states and 1746 transitions. [2021-10-28 08:42:58,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:42:58,554 INFO L681 BuchiCegarLoop]: Abstraction has 1138 states and 1746 transitions. [2021-10-28 08:42:58,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states and 1746 transitions. [2021-10-28 08:42:58,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1138. [2021-10-28 08:42:58,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1138 states have (on average 1.5342706502636203) internal successors, (1746), 1137 states have internal predecessors, (1746), 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 08:42:58,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1746 transitions. [2021-10-28 08:42:58,589 INFO L704 BuchiCegarLoop]: Abstraction has 1138 states and 1746 transitions. [2021-10-28 08:42:58,589 INFO L587 BuchiCegarLoop]: Abstraction has 1138 states and 1746 transitions. [2021-10-28 08:42:58,589 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 08:42:58,589 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1138 states and 1746 transitions. [2021-10-28 08:42:58,597 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1136 [2021-10-28 08:42:58,598 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:42:58,598 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:42:58,599 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 08:42:58,600 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] [2021-10-28 08:42:58,600 INFO L791 eck$LassoCheckResult]: Stem: 3463#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 3431#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;havoc main_~cond~0; 3432#L183-1 [2021-10-28 08:42:58,600 INFO L793 eck$LassoCheckResult]: Loop: 3432#L183-1 assume !false;main_~cond~0 := main_#t~nondet19;havoc main_#t~nondet19; 3657#L49 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; 3654#L78 assume !(0 != main_~p1~0); 3651#L78-2 assume !(0 != main_~p2~0); 3644#L82-1 assume !(0 != main_~p3~0); 3645#L86-1 assume !(0 != main_~p4~0); 3627#L90-1 assume !(0 != main_~p5~0); 3629#L94-1 assume !(0 != main_~p6~0); 3613#L98-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 3614#L102-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 3599#L106-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 3600#L110-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 3585#L114-1 assume !(0 != main_~p11~0); 3586#L118-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 3567#L122-1 assume !(0 != main_~p1~0); 3568#L128-1 assume !(0 != main_~p2~0); 3691#L133-1 assume !(0 != main_~p3~0); 3688#L138-1 assume !(0 != main_~p4~0); 3686#L143-1 assume !(0 != main_~p5~0); 3684#L148-1 assume !(0 != main_~p6~0); 3681#L153-1 assume !(0 != main_~p7~0); 3677#L158-1 assume !(0 != main_~p8~0); 3673#L163-1 assume !(0 != main_~p9~0); 3669#L168-1 assume !(0 != main_~p10~0); 3664#L173-1 assume !(0 != main_~p11~0); 3661#L178-1 assume !(0 != main_~p12~0); 3432#L183-1 [2021-10-28 08:42:58,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:58,601 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2021-10-28 08:42:58,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:58,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585851004] [2021-10-28 08:42:58,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:58,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:42:58,628 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:42:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:42:58,639 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:42:58,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:58,640 INFO L85 PathProgramCache]: Analyzing trace with hash -547574454, now seen corresponding path program 1 times [2021-10-28 08:42:58,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:58,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896755337] [2021-10-28 08:42:58,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:58,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:58,690 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 08:42:58,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:58,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896755337] [2021-10-28 08:42:58,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896755337] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:58,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:58,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:42:58,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506093762] [2021-10-28 08:42:58,692 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:42:58,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:58,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:42:58,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:42:58,693 INFO L87 Difference]: Start difference. First operand 1138 states and 1746 transitions. cyclomatic complexity: 640 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 08:42:58,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:58,723 INFO L93 Difference]: Finished difference Result 2242 states and 3394 transitions. [2021-10-28 08:42:58,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:42:58,724 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2242 states and 3394 transitions. [2021-10-28 08:42:58,759 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2240 [2021-10-28 08:42:58,781 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2242 states to 2242 states and 3394 transitions. [2021-10-28 08:42:58,781 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2242 [2021-10-28 08:42:58,784 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2242 [2021-10-28 08:42:58,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2242 states and 3394 transitions. [2021-10-28 08:42:58,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:42:58,788 INFO L681 BuchiCegarLoop]: Abstraction has 2242 states and 3394 transitions. [2021-10-28 08:42:58,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states and 3394 transitions. [2021-10-28 08:42:58,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 2242. [2021-10-28 08:42:58,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2242 states, 2242 states have (on average 1.5138269402319358) internal successors, (3394), 2241 states have internal predecessors, (3394), 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 08:42:58,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 3394 transitions. [2021-10-28 08:42:58,845 INFO L704 BuchiCegarLoop]: Abstraction has 2242 states and 3394 transitions. [2021-10-28 08:42:58,845 INFO L587 BuchiCegarLoop]: Abstraction has 2242 states and 3394 transitions. [2021-10-28 08:42:58,846 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 08:42:58,846 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2242 states and 3394 transitions. [2021-10-28 08:42:58,863 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2240 [2021-10-28 08:42:58,863 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:42:58,864 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:42:58,865 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 08:42:58,866 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] [2021-10-28 08:42:58,866 INFO L791 eck$LassoCheckResult]: Stem: 6848#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(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 6817#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_~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_~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;havoc main_~cond~0; 6818#L183-1 [2021-10-28 08:42:58,866 INFO L793 eck$LassoCheckResult]: Loop: 6818#L183-1 assume !false;main_~cond~0 := main_#t~nondet19;havoc main_#t~nondet19; 7040#L49 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; 7037#L78 assume !(0 != main_~p1~0); 7034#L78-2 assume !(0 != main_~p2~0); 7026#L82-1 assume !(0 != main_~p3~0); 7027#L86-1 assume !(0 != main_~p4~0); 7010#L90-1 assume !(0 != main_~p5~0); 7011#L94-1 assume !(0 != main_~p6~0); 6994#L98-1 assume !(0 != main_~p7~0); 6996#L102-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 6982#L106-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 6983#L110-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 6970#L114-1 assume !(0 != main_~p11~0); 6971#L118-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 6953#L122-1 assume !(0 != main_~p1~0); 6954#L128-1 assume !(0 != main_~p2~0); 7073#L133-1 assume !(0 != main_~p3~0); 7070#L138-1 assume !(0 != main_~p4~0); 7068#L143-1 assume !(0 != main_~p5~0); 7066#L148-1 assume !(0 != main_~p6~0); 7064#L153-1 assume !(0 != main_~p7~0); 7061#L158-1 assume !(0 != main_~p8~0); 7057#L163-1 assume !(0 != main_~p9~0); 7053#L168-1 assume !(0 != main_~p10~0); 7048#L173-1 assume !(0 != main_~p11~0); 7045#L178-1 assume !(0 != main_~p12~0); 6818#L183-1 [2021-10-28 08:42:58,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:58,869 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2021-10-28 08:42:58,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:58,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536277198] [2021-10-28 08:42:58,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:58,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:42:58,886 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:42:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:42:58,912 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:42:58,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:58,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1753248136, now seen corresponding path program 1 times [2021-10-28 08:42:58,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:58,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635939705] [2021-10-28 08:42:58,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:58,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:58,952 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 08:42:58,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:58,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635939705] [2021-10-28 08:42:58,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635939705] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:58,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:58,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:42:58,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839363449] [2021-10-28 08:42:58,954 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:42:58,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:58,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:42:58,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:42:58,956 INFO L87 Difference]: Start difference. First operand 2242 states and 3394 transitions. cyclomatic complexity: 1216 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 08:42:59,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:59,002 INFO L93 Difference]: Finished difference Result 4418 states and 6594 transitions. [2021-10-28 08:42:59,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:42:59,003 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4418 states and 6594 transitions. [2021-10-28 08:42:59,068 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 4416 [2021-10-28 08:42:59,108 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4418 states to 4418 states and 6594 transitions. [2021-10-28 08:42:59,108 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4418 [2021-10-28 08:42:59,112 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4418 [2021-10-28 08:42:59,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4418 states and 6594 transitions. [2021-10-28 08:42:59,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:42:59,120 INFO L681 BuchiCegarLoop]: Abstraction has 4418 states and 6594 transitions. [2021-10-28 08:42:59,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4418 states and 6594 transitions. [2021-10-28 08:42:59,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4418 to 4418. [2021-10-28 08:42:59,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4418 states, 4418 states have (on average 1.4925305568130376) internal successors, (6594), 4417 states have internal predecessors, (6594), 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 08:42:59,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4418 states to 4418 states and 6594 transitions. [2021-10-28 08:42:59,240 INFO L704 BuchiCegarLoop]: Abstraction has 4418 states and 6594 transitions. [2021-10-28 08:42:59,241 INFO L587 BuchiCegarLoop]: Abstraction has 4418 states and 6594 transitions. [2021-10-28 08:42:59,241 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 08:42:59,241 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4418 states and 6594 transitions. [2021-10-28 08:42:59,271 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 4416 [2021-10-28 08:42:59,271 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:42:59,271 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:42:59,272 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 08:42:59,273 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] [2021-10-28 08:42:59,273 INFO L791 eck$LassoCheckResult]: Stem: 13515#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 13482#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;havoc main_~cond~0; 13483#L183-1 [2021-10-28 08:42:59,274 INFO L793 eck$LassoCheckResult]: Loop: 13483#L183-1 assume !false;main_~cond~0 := main_#t~nondet19;havoc main_#t~nondet19; 13834#L49 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; 13830#L78 assume !(0 != main_~p1~0); 13827#L78-2 assume !(0 != main_~p2~0); 13712#L82-1 assume !(0 != main_~p3~0); 13713#L86-1 assume !(0 != main_~p4~0); 13693#L90-1 assume !(0 != main_~p5~0); 13694#L94-1 assume !(0 != main_~p6~0); 13674#L98-1 assume !(0 != main_~p7~0); 13676#L102-1 assume !(0 != main_~p8~0); 13653#L106-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 13654#L110-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 13637#L114-1 assume !(0 != main_~p11~0); 13638#L118-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 13618#L122-1 assume !(0 != main_~p1~0); 13619#L128-1 assume !(0 != main_~p2~0); 13867#L133-1 assume !(0 != main_~p3~0); 13862#L138-1 assume !(0 != main_~p4~0); 13858#L143-1 assume !(0 != main_~p5~0); 13824#L148-1 assume !(0 != main_~p6~0); 13826#L153-1 assume !(0 != main_~p7~0); 13853#L158-1 assume !(0 != main_~p8~0); 13850#L163-1 assume !(0 != main_~p9~0); 13846#L168-1 assume !(0 != main_~p10~0); 13841#L173-1 assume !(0 != main_~p11~0); 13838#L178-1 assume !(0 != main_~p12~0); 13483#L183-1 [2021-10-28 08:42:59,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:59,275 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2021-10-28 08:42:59,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:59,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162399230] [2021-10-28 08:42:59,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:59,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:42:59,290 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:42:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:42:59,314 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:42:59,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:59,315 INFO L85 PathProgramCache]: Analyzing trace with hash 164900234, now seen corresponding path program 1 times [2021-10-28 08:42:59,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:59,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895772094] [2021-10-28 08:42:59,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:59,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:59,353 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 08:42:59,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:59,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895772094] [2021-10-28 08:42:59,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895772094] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:59,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:59,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:42:59,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702298878] [2021-10-28 08:42:59,357 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:42:59,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:59,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:42:59,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:42:59,358 INFO L87 Difference]: Start difference. First operand 4418 states and 6594 transitions. cyclomatic complexity: 2304 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 08:42:59,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:59,457 INFO L93 Difference]: Finished difference Result 8706 states and 12802 transitions. [2021-10-28 08:42:59,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:42:59,458 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8706 states and 12802 transitions. [2021-10-28 08:42:59,532 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 8704 [2021-10-28 08:42:59,610 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8706 states to 8706 states and 12802 transitions. [2021-10-28 08:42:59,610 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8706 [2021-10-28 08:42:59,618 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8706 [2021-10-28 08:42:59,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8706 states and 12802 transitions. [2021-10-28 08:42:59,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:42:59,632 INFO L681 BuchiCegarLoop]: Abstraction has 8706 states and 12802 transitions. [2021-10-28 08:42:59,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8706 states and 12802 transitions. [2021-10-28 08:42:59,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8706 to 8706. [2021-10-28 08:42:59,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8706 states, 8706 states have (on average 1.4704801286469102) internal successors, (12802), 8705 states have internal predecessors, (12802), 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 08:42:59,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8706 states to 8706 states and 12802 transitions. [2021-10-28 08:42:59,891 INFO L704 BuchiCegarLoop]: Abstraction has 8706 states and 12802 transitions. [2021-10-28 08:42:59,891 INFO L587 BuchiCegarLoop]: Abstraction has 8706 states and 12802 transitions. [2021-10-28 08:42:59,891 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 08:42:59,891 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8706 states and 12802 transitions. [2021-10-28 08:42:59,928 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 8704 [2021-10-28 08:42:59,929 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:42:59,929 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:42:59,932 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 08:42:59,932 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] [2021-10-28 08:42:59,932 INFO L791 eck$LassoCheckResult]: Stem: 26646#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(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 26612#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_~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_~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;havoc main_~cond~0; 26613#L183-1 [2021-10-28 08:42:59,933 INFO L793 eck$LassoCheckResult]: Loop: 26613#L183-1 assume !false;main_~cond~0 := main_#t~nondet19;havoc main_#t~nondet19; 27025#L49 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; 27021#L78 assume !(0 != main_~p1~0); 27018#L78-2 assume !(0 != main_~p2~0); 27019#L82-1 assume !(0 != main_~p3~0); 27063#L86-1 assume !(0 != main_~p4~0); 26838#L90-1 assume !(0 != main_~p5~0); 26839#L94-1 assume !(0 != main_~p6~0); 26819#L98-1 assume !(0 != main_~p7~0); 26821#L102-1 assume !(0 != main_~p8~0); 26795#L106-1 assume !(0 != main_~p9~0); 26797#L110-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 26778#L114-1 assume !(0 != main_~p11~0); 26779#L118-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 26759#L122-1 assume !(0 != main_~p1~0); 26760#L128-1 assume !(0 != main_~p2~0); 27053#L133-1 assume !(0 != main_~p3~0); 26987#L138-1 assume !(0 != main_~p4~0); 26988#L143-1 assume !(0 != main_~p5~0); 27049#L148-1 assume !(0 != main_~p6~0); 27047#L153-1 assume !(0 != main_~p7~0); 27044#L158-1 assume !(0 != main_~p8~0); 27040#L163-1 assume !(0 != main_~p9~0); 27037#L168-1 assume !(0 != main_~p10~0); 27032#L173-1 assume !(0 != main_~p11~0); 27029#L178-1 assume !(0 != main_~p12~0); 26613#L183-1 [2021-10-28 08:42:59,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:59,934 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2021-10-28 08:42:59,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:59,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189738589] [2021-10-28 08:42:59,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:59,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:42:59,946 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:42:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:42:59,959 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:42:59,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:59,960 INFO L85 PathProgramCache]: Analyzing trace with hash -856168120, now seen corresponding path program 1 times [2021-10-28 08:42:59,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:59,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164424105] [2021-10-28 08:42:59,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:59,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:00,005 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 08:43:00,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:00,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164424105] [2021-10-28 08:43:00,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164424105] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:00,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:00,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:43:00,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427711749] [2021-10-28 08:43:00,011 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:43:00,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:00,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:43:00,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:43:00,016 INFO L87 Difference]: Start difference. First operand 8706 states and 12802 transitions. cyclomatic complexity: 4352 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 08:43:00,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:00,181 INFO L93 Difference]: Finished difference Result 17154 states and 24834 transitions. [2021-10-28 08:43:00,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:43:00,181 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17154 states and 24834 transitions. [2021-10-28 08:43:00,331 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 17152 [2021-10-28 08:43:00,420 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17154 states to 17154 states and 24834 transitions. [2021-10-28 08:43:00,420 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17154 [2021-10-28 08:43:00,476 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17154 [2021-10-28 08:43:00,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17154 states and 24834 transitions. [2021-10-28 08:43:00,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:43:00,510 INFO L681 BuchiCegarLoop]: Abstraction has 17154 states and 24834 transitions. [2021-10-28 08:43:00,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17154 states and 24834 transitions. [2021-10-28 08:43:00,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17154 to 17154. [2021-10-28 08:43:00,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17154 states, 17154 states have (on average 1.4477089891570478) internal successors, (24834), 17153 states have internal predecessors, (24834), 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 08:43:01,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17154 states to 17154 states and 24834 transitions. [2021-10-28 08:43:01,055 INFO L704 BuchiCegarLoop]: Abstraction has 17154 states and 24834 transitions. [2021-10-28 08:43:01,055 INFO L587 BuchiCegarLoop]: Abstraction has 17154 states and 24834 transitions. [2021-10-28 08:43:01,055 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 08:43:01,055 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17154 states and 24834 transitions. [2021-10-28 08:43:01,119 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 17152 [2021-10-28 08:43:01,120 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:43:01,120 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:43:01,120 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 08:43:01,120 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] [2021-10-28 08:43:01,121 INFO L791 eck$LassoCheckResult]: Stem: 52512#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 52479#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;havoc main_~cond~0; 52480#L183-1 [2021-10-28 08:43:01,123 INFO L793 eck$LassoCheckResult]: Loop: 52480#L183-1 assume !false;main_~cond~0 := main_#t~nondet19;havoc main_#t~nondet19; 53075#L49 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; 53070#L78 assume !(0 != main_~p1~0); 53071#L78-2 assume !(0 != main_~p2~0); 53058#L82-1 assume !(0 != main_~p3~0); 53059#L86-1 assume !(0 != main_~p4~0); 53047#L90-1 assume !(0 != main_~p5~0); 53049#L94-1 assume !(0 != main_~p6~0); 53158#L98-1 assume !(0 != main_~p7~0); 53150#L102-1 assume !(0 != main_~p8~0); 53145#L106-1 assume !(0 != main_~p9~0); 53142#L110-1 assume !(0 != main_~p10~0); 53137#L114-1 assume !(0 != main_~p11~0); 53132#L118-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 53127#L122-1 assume !(0 != main_~p1~0); 53121#L128-1 assume !(0 != main_~p2~0); 53120#L133-1 assume !(0 != main_~p3~0); 53116#L138-1 assume !(0 != main_~p4~0); 53113#L143-1 assume !(0 != main_~p5~0); 53109#L148-1 assume !(0 != main_~p6~0); 53105#L153-1 assume !(0 != main_~p7~0); 53101#L158-1 assume !(0 != main_~p8~0); 53097#L163-1 assume !(0 != main_~p9~0); 53089#L168-1 assume !(0 != main_~p10~0); 53087#L173-1 assume !(0 != main_~p11~0); 53086#L178-1 assume !(0 != main_~p12~0); 52480#L183-1 [2021-10-28 08:43:01,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:01,124 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 10 times [2021-10-28 08:43:01,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:01,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657004494] [2021-10-28 08:43:01,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:01,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:43:01,140 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:43:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:43:01,156 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:43:01,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:01,158 INFO L85 PathProgramCache]: Analyzing trace with hash -2136031798, now seen corresponding path program 1 times [2021-10-28 08:43:01,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:01,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339557265] [2021-10-28 08:43:01,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:01,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:01,184 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 08:43:01,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:01,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339557265] [2021-10-28 08:43:01,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339557265] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:01,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:01,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 08:43:01,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413439692] [2021-10-28 08:43:01,187 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:43:01,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:01,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:43:01,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:43:01,189 INFO L87 Difference]: Start difference. First operand 17154 states and 24834 transitions. cyclomatic complexity: 8192 Second operand has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 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 08:43:01,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:01,501 INFO L93 Difference]: Finished difference Result 33794 states and 48130 transitions. [2021-10-28 08:43:01,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:43:01,502 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33794 states and 48130 transitions. [2021-10-28 08:43:01,732 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 33792 [2021-10-28 08:43:01,884 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33794 states to 33794 states and 48130 transitions. [2021-10-28 08:43:01,885 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33794 [2021-10-28 08:43:01,920 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33794 [2021-10-28 08:43:01,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33794 states and 48130 transitions. [2021-10-28 08:43:01,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:43:01,947 INFO L681 BuchiCegarLoop]: Abstraction has 33794 states and 48130 transitions. [2021-10-28 08:43:01,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33794 states and 48130 transitions. [2021-10-28 08:43:02,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33794 to 33794. [2021-10-28 08:43:02,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33794 states, 33794 states have (on average 1.4242173166834349) internal successors, (48130), 33793 states have internal predecessors, (48130), 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 08:43:02,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33794 states to 33794 states and 48130 transitions. [2021-10-28 08:43:02,810 INFO L704 BuchiCegarLoop]: Abstraction has 33794 states and 48130 transitions. [2021-10-28 08:43:02,810 INFO L587 BuchiCegarLoop]: Abstraction has 33794 states and 48130 transitions. [2021-10-28 08:43:02,810 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-28 08:43:02,810 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33794 states and 48130 transitions. [2021-10-28 08:43:02,916 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 33792 [2021-10-28 08:43:02,916 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:43:02,916 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:43:02,917 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 08:43:02,917 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] [2021-10-28 08:43:02,917 INFO L791 eck$LassoCheckResult]: Stem: 103466#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(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 103432#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_~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_~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;havoc main_~cond~0; 103433#L183-1 [2021-10-28 08:43:02,918 INFO L793 eck$LassoCheckResult]: Loop: 103433#L183-1 assume !false;main_~cond~0 := main_#t~nondet19;havoc main_#t~nondet19; 103596#L49 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; 103594#L78 assume !(0 != main_~p1~0); 103590#L78-2 assume !(0 != main_~p2~0); 103588#L82-1 assume !(0 != main_~p3~0); 103584#L86-1 assume !(0 != main_~p4~0); 103580#L90-1 assume !(0 != main_~p5~0); 103576#L94-1 assume !(0 != main_~p6~0); 103572#L98-1 assume !(0 != main_~p7~0); 103568#L102-1 assume !(0 != main_~p8~0); 103564#L106-1 assume !(0 != main_~p9~0); 103560#L110-1 assume !(0 != main_~p10~0); 103558#L114-1 assume !(0 != main_~p11~0); 103554#L118-1 assume !(0 != main_~p12~0); 103551#L122-1 assume !(0 != main_~p1~0); 103552#L128-1 assume !(0 != main_~p2~0); 103636#L133-1 assume !(0 != main_~p3~0); 103631#L138-1 assume !(0 != main_~p4~0); 103627#L143-1 assume !(0 != main_~p5~0); 103623#L148-1 assume !(0 != main_~p6~0); 103619#L153-1 assume !(0 != main_~p7~0); 103615#L158-1 assume !(0 != main_~p8~0); 103611#L163-1 assume !(0 != main_~p9~0); 103607#L168-1 assume !(0 != main_~p10~0); 103603#L173-1 assume !(0 != main_~p11~0); 103599#L178-1 assume !(0 != main_~p12~0); 103433#L183-1 [2021-10-28 08:43:02,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:02,918 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 11 times [2021-10-28 08:43:02,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:02,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10827729] [2021-10-28 08:43:02,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:02,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:43:02,926 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:43:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:43:02,942 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:43:02,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:02,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1572129484, now seen corresponding path program 1 times [2021-10-28 08:43:02,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:02,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440507984] [2021-10-28 08:43:02,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:02,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:43:02,954 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:43:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:43:02,971 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:43:02,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:02,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1068122098, now seen corresponding path program 1 times [2021-10-28 08:43:02,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:02,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142553947] [2021-10-28 08:43:02,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:02,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:43:03,086 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:43:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:43:03,101 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:43:03,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 08:43:03 BoogieIcfgContainer [2021-10-28 08:43:03,811 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 08:43:03,812 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:43:03,812 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:43:03,812 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:43:03,813 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:42:57" (3/4) ... [2021-10-28 08:43:03,815 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 08:43:03,857 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d45dc33-a792-448d-a8f6-1db96b775101/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:43:03,857 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:43:03,859 INFO L168 Benchmark]: Toolchain (without parser) took 7459.72 ms. Allocated memory was 96.5 MB in the beginning and 656.4 MB in the end (delta: 559.9 MB). Free memory was 60.9 MB in the beginning and 360.0 MB in the end (delta: -299.1 MB). Peak memory consumption was 260.9 MB. Max. memory is 16.1 GB. [2021-10-28 08:43:03,859 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory was 66.9 MB in the beginning and 66.9 MB in the end (delta: 25.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:43:03,860 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.43 ms. Allocated memory is still 96.5 MB. Free memory was 60.7 MB in the beginning and 70.3 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:43:03,860 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.17 ms. Allocated memory is still 96.5 MB. Free memory was 70.3 MB in the beginning and 68.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:43:03,861 INFO L168 Benchmark]: Boogie Preprocessor took 28.51 ms. Allocated memory is still 96.5 MB. Free memory was 68.6 MB in the beginning and 67.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:43:03,861 INFO L168 Benchmark]: RCFGBuilder took 501.18 ms. Allocated memory is still 96.5 MB. Free memory was 67.4 MB in the beginning and 54.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:43:03,862 INFO L168 Benchmark]: BuchiAutomizer took 6559.87 ms. Allocated memory was 96.5 MB in the beginning and 656.4 MB in the end (delta: 559.9 MB). Free memory was 54.9 MB in the beginning and 362.0 MB in the end (delta: -307.1 MB). Peak memory consumption was 255.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:43:03,862 INFO L168 Benchmark]: Witness Printer took 45.68 ms. Allocated memory is still 656.4 MB. Free memory was 362.0 MB in the beginning and 360.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:43:03,864 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory was 66.9 MB in the beginning and 66.9 MB in the end (delta: 25.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 278.43 ms. Allocated memory is still 96.5 MB. Free memory was 60.7 MB in the beginning and 70.3 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.17 ms. Allocated memory is still 96.5 MB. Free memory was 70.3 MB in the beginning and 68.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.51 ms. Allocated memory is still 96.5 MB. Free memory was 68.6 MB in the beginning and 67.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 501.18 ms. Allocated memory is still 96.5 MB. Free memory was 67.4 MB in the beginning and 54.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 6559.87 ms. Allocated memory was 96.5 MB in the beginning and 656.4 MB in the end (delta: 559.9 MB). Free memory was 54.9 MB in the beginning and 362.0 MB in the end (delta: -307.1 MB). Peak memory consumption was 255.3 MB. Max. memory is 16.1 GB. * Witness Printer took 45.68 ms. Allocated memory is still 656.4 MB. Free memory was 362.0 MB in the beginning and 360.0 MB in the end (delta: 2.0 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 10 terminating modules (10 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.10 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 33794 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.4s and 11 iterations. TraceHistogramMax:1. Analysis of lassos took 1.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 0. Minimization of det autom 10. Minimization of nondet autom 0. Automata minimization 1.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 1.0s Buchi closure took 0.1s. Biggest automaton had 33794 states and ocurred in iteration 10. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 957 SDtfs, 496 SDslu, 595 SDs, 0 SdLazy, 50 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI10 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: 47]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=20361} State at position 1 is {NULL=20362, NULL=0, p1=0, \result=0, p3=0, p2=0, p5=0, NULL=20361, p4=0, p10=0, p7=0, p6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6fa46d5e=0, p9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5648efac=0, p8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@156c6895=0, lk12=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3645039d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7a475696=0, lk10=0, p11=0, lk11=0, p12=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3741dd95=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@42bfe61f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@142bb3d2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1afc0a2f=11, cond=11, NULL=20363, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6be3f3fd=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1d3d16d4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@37ab705=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4349b21a=0, NULL=0, NULL=0, NULL=0, NULL=20364, lk3=0, lk4=0, lk5=0, lk6=0, NULL=0, lk1=0, lk2=0, lk7=0, lk8=0, lk9=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 47]: 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; [L45] int cond; Loop: [L47] COND TRUE 1 [L48] cond = __VERIFIER_nondet_int() [L49] COND FALSE !(cond == 0) [L52] lk1 = 0 [L54] lk2 = 0 [L56] lk3 = 0 [L58] lk4 = 0 [L60] lk5 = 0 [L62] lk6 = 0 [L64] lk7 = 0 [L66] lk8 = 0 [L68] lk9 = 0 [L70] lk10 = 0 [L72] lk11 = 0 [L74] lk12 = 0 [L78] COND FALSE !(p1 != 0) [L82] COND FALSE !(p2 != 0) [L86] COND FALSE !(p3 != 0) [L90] COND FALSE !(p4 != 0) [L94] COND FALSE !(p5 != 0) [L98] COND FALSE !(p6 != 0) [L102] COND FALSE !(p7 != 0) [L106] COND FALSE !(p8 != 0) [L110] COND FALSE !(p9 != 0) [L114] COND FALSE !(p10 != 0) [L118] COND FALSE !(p11 != 0) [L122] COND FALSE !(p12 != 0) [L128] COND FALSE !(p1 != 0) [L133] COND FALSE !(p2 != 0) [L138] COND FALSE !(p3 != 0) [L143] COND FALSE !(p4 != 0) [L148] COND FALSE !(p5 != 0) [L153] COND FALSE !(p6 != 0) [L158] COND FALSE !(p7 != 0) [L163] COND FALSE !(p8 != 0) [L168] COND FALSE !(p9 != 0) [L173] COND FALSE !(p10 != 0) [L178] COND FALSE !(p11 != 0) [L183] COND FALSE !(p12 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 08:43:03,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d45dc33-a792-448d-a8f6-1db96b775101/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...