./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 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7989127e-e151-4cdd-9553-87c770f56fd5/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7989127e-e151-4cdd-9553-87c770f56fd5/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7989127e-e151-4cdd-9553-87c770f56fd5/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7989127e-e151-4cdd-9553-87c770f56fd5/bin/uautomizer-AkOaLMaTGY/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7989127e-e151-4cdd-9553-87c770f56fd5/bin/uautomizer-AkOaLMaTGY/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7989127e-e151-4cdd-9553-87c770f56fd5/bin/uautomizer-AkOaLMaTGY --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 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:31:12,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:31:12,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:31:13,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:31:13,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:31:13,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:31:13,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:31:13,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:31:13,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:31:13,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:31:13,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:31:13,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:31:13,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:31:13,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:31:13,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:31:13,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:31:13,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:31:13,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:31:13,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:31:13,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:31:13,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:31:13,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:31:13,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:31:13,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:31:13,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:31:13,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:31:13,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:31:13,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:31:13,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:31:13,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:31:13,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:31:13,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:31:13,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:31:13,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:31:13,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:31:13,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:31:13,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:31:13,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:31:13,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:31:13,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:31:13,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:31:13,134 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7989127e-e151-4cdd-9553-87c770f56fd5/bin/uautomizer-AkOaLMaTGY/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-07 08:31:13,190 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:31:13,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:31:13,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:31:13,192 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:31:13,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:31:13,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:31:13,194 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:31:13,194 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-07 08:31:13,194 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-07 08:31:13,195 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-07 08:31:13,195 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-07 08:31:13,195 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-07 08:31:13,196 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-07 08:31:13,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:31:13,196 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:31:13,197 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 08:31:13,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:31:13,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:31:13,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:31:13,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-07 08:31:13,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-07 08:31:13,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-07 08:31:13,199 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:31:13,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:31:13,199 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-07 08:31:13,200 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:31:13,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-07 08:31:13,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:31:13,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:31:13,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:31:13,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:31:13,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:31:13,203 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-07 08:31:13,203 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_7989127e-e151-4cdd-9553-87c770f56fd5/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7989127e-e151-4cdd-9553-87c770f56fd5/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12c3feea735c5360de013afbcf9aaa3880d39f75cbb7661493cccf003151044d [2021-11-07 08:31:13,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:31:13,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:31:13,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:31:13,545 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:31:13,546 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:31:13,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7989127e-e151-4cdd-9553-87c770f56fd5/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/locks/test_locks_12.c [2021-11-07 08:31:13,640 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7989127e-e151-4cdd-9553-87c770f56fd5/bin/uautomizer-AkOaLMaTGY/data/20d65adcb/5dc339abb49b4d548b347e5d3b77114b/FLAGf5a775d64 [2021-11-07 08:31:14,211 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:31:14,212 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7989127e-e151-4cdd-9553-87c770f56fd5/sv-benchmarks/c/locks/test_locks_12.c [2021-11-07 08:31:14,235 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7989127e-e151-4cdd-9553-87c770f56fd5/bin/uautomizer-AkOaLMaTGY/data/20d65adcb/5dc339abb49b4d548b347e5d3b77114b/FLAGf5a775d64 [2021-11-07 08:31:14,541 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7989127e-e151-4cdd-9553-87c770f56fd5/bin/uautomizer-AkOaLMaTGY/data/20d65adcb/5dc339abb49b4d548b347e5d3b77114b [2021-11-07 08:31:14,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:31:14,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:31:14,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:31:14,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:31:14,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:31:14,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:31:14" (1/1) ... [2021-11-07 08:31:14,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18ce3c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:14, skipping insertion in model container [2021-11-07 08:31:14,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:31:14" (1/1) ... [2021-11-07 08:31:14,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:31:14,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:31:14,811 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_7989127e-e151-4cdd-9553-87c770f56fd5/sv-benchmarks/c/locks/test_locks_12.c[4591,4604] [2021-11-07 08:31:14,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:31:14,850 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:31:14,885 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_7989127e-e151-4cdd-9553-87c770f56fd5/sv-benchmarks/c/locks/test_locks_12.c[4591,4604] [2021-11-07 08:31:14,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:31:14,904 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:31:14,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:14 WrapperNode [2021-11-07 08:31:14,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:31:14,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:31:14,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:31:14,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:31:14,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:14" (1/1) ... [2021-11-07 08:31:14,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:14" (1/1) ... [2021-11-07 08:31:14,954 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:31:14,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:31:14,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:31:14,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:31:14,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:14" (1/1) ... [2021-11-07 08:31:14,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:14" (1/1) ... [2021-11-07 08:31:14,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:14" (1/1) ... [2021-11-07 08:31:14,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:14" (1/1) ... [2021-11-07 08:31:14,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:14" (1/1) ... [2021-11-07 08:31:14,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:14" (1/1) ... [2021-11-07 08:31:14,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:14" (1/1) ... [2021-11-07 08:31:14,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:31:14,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:31:14,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:31:14,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:31:14,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:14" (1/1) ... [2021-11-07 08:31:15,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:31:15,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7989127e-e151-4cdd-9553-87c770f56fd5/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:31:15,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7989127e-e151-4cdd-9553-87c770f56fd5/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:31:15,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7989127e-e151-4cdd-9553-87c770f56fd5/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-07 08:31:15,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:31:15,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:31:15,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:31:15,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:31:15,559 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:31:15,560 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-07 08:31:15,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:31:15 BoogieIcfgContainer [2021-11-07 08:31:15,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:31:15,564 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-07 08:31:15,564 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-07 08:31:15,568 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-07 08:31:15,569 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 08:31:15,569 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.11 08:31:14" (1/3) ... [2021-11-07 08:31:15,571 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50d2fae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.11 08:31:15, skipping insertion in model container [2021-11-07 08:31:15,572 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 08:31:15,572 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:14" (2/3) ... [2021-11-07 08:31:15,572 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50d2fae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.11 08:31:15, skipping insertion in model container [2021-11-07 08:31:15,572 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 08:31:15,573 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:31:15" (3/3) ... [2021-11-07 08:31:15,574 INFO L389 chiAutomizerObserver]: Analyzing ICFG test_locks_12.c [2021-11-07 08:31:15,651 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-07 08:31:15,652 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-07 08:31:15,652 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-07 08:31:15,652 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-07 08:31:15,652 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-07 08:31:15,652 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-07 08:31:15,652 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-07 08:31:15,653 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-07 08:31:15,673 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) [2021-11-07 08:31:15,716 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-11-07 08:31:15,717 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:31:15,717 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:31:15,726 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-07 08:31:15,726 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] [2021-11-07 08:31:15,726 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-07 08:31:15,729 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) [2021-11-07 08:31:15,741 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-11-07 08:31:15,741 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:31:15,741 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:31:15,743 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-07 08:31:15,744 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] [2021-11-07 08:31:15,754 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 [2021-11-07 08:31:15,758 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 [2021-11-07 08:31:15,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:15,777 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-07 08:31:15,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:15,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391282265] [2021-11-07 08:31:15,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:15,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:15,954 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:31:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:16,040 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:31:16,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:16,050 INFO L85 PathProgramCache]: Analyzing trace with hash -819199544, now seen corresponding path program 1 times [2021-11-07 08:31:16,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:16,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952600872] [2021-11-07 08:31:16,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:16,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:16,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:31:16,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:31:16,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952600872] [2021-11-07 08:31:16,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952600872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:31:16,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:31:16,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:31:16,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678432432] [2021-11-07 08:31:16,210 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-07 08:31:16,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:31:16,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:31:16,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:31:16,239 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) [2021-11-07 08:31:16,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:31:16,307 INFO L93 Difference]: Finished difference Result 87 states and 154 transitions. [2021-11-07 08:31:16,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:31:16,310 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 87 states and 154 transitions. [2021-11-07 08:31:16,315 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-11-07 08:31:16,322 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 87 states to 77 states and 123 transitions. [2021-11-07 08:31:16,323 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2021-11-07 08:31:16,323 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2021-11-07 08:31:16,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 123 transitions. [2021-11-07 08:31:16,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:31:16,325 INFO L681 BuchiCegarLoop]: Abstraction has 77 states and 123 transitions. [2021-11-07 08:31:16,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 123 transitions. [2021-11-07 08:31:16,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-11-07 08:31:16,376 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) [2021-11-07 08:31:16,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 123 transitions. [2021-11-07 08:31:16,381 INFO L704 BuchiCegarLoop]: Abstraction has 77 states and 123 transitions. [2021-11-07 08:31:16,382 INFO L587 BuchiCegarLoop]: Abstraction has 77 states and 123 transitions. [2021-11-07 08:31:16,382 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-07 08:31:16,382 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 77 states and 123 transitions. [2021-11-07 08:31:16,384 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-11-07 08:31:16,385 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:31:16,385 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:31:16,386 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-07 08:31:16,386 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:31:16,386 INFO L791 eck$LassoCheckResult]: Stem: 176#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 152#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;havoc main_~cond~0; 151#L183-1 [2021-11-07 08:31:16,387 INFO L793 eck$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 [2021-11-07 08:31:16,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:16,388 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-11-07 08:31:16,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:16,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137565187] [2021-11-07 08:31:16,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:16,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:16,406 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:31:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:16,427 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:31:16,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:16,428 INFO L85 PathProgramCache]: Analyzing trace with hash -953213050, now seen corresponding path program 1 times [2021-11-07 08:31:16,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:16,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685894473] [2021-11-07 08:31:16,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:16,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:16,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:31:16,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:31:16,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685894473] [2021-11-07 08:31:16,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685894473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:31:16,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:31:16,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:31:16,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094123265] [2021-11-07 08:31:16,479 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-07 08:31:16,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:31:16,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:31:16,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:31:16,481 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) [2021-11-07 08:31:16,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:31:16,506 INFO L93 Difference]: Finished difference Result 150 states and 238 transitions. [2021-11-07 08:31:16,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:31:16,507 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 150 states and 238 transitions. [2021-11-07 08:31:16,512 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 148 [2021-11-07 08:31:16,515 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 150 states to 150 states and 238 transitions. [2021-11-07 08:31:16,516 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 150 [2021-11-07 08:31:16,516 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 150 [2021-11-07 08:31:16,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 150 states and 238 transitions. [2021-11-07 08:31:16,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:31:16,518 INFO L681 BuchiCegarLoop]: Abstraction has 150 states and 238 transitions. [2021-11-07 08:31:16,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states and 238 transitions. [2021-11-07 08:31:16,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-11-07 08:31:16,534 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) [2021-11-07 08:31:16,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 238 transitions. [2021-11-07 08:31:16,537 INFO L704 BuchiCegarLoop]: Abstraction has 150 states and 238 transitions. [2021-11-07 08:31:16,537 INFO L587 BuchiCegarLoop]: Abstraction has 150 states and 238 transitions. [2021-11-07 08:31:16,538 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-07 08:31:16,538 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 150 states and 238 transitions. [2021-11-07 08:31:16,541 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 148 [2021-11-07 08:31:16,541 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:31:16,541 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:31:16,542 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-07 08:31:16,542 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] [2021-11-07 08:31:16,543 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 [2021-11-07 08:31:16,543 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 [2021-11-07 08:31:16,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:16,544 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-11-07 08:31:16,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:16,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119606358] [2021-11-07 08:31:16,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:16,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:16,561 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:31:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:16,581 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:31:16,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:16,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1536315912, now seen corresponding path program 1 times [2021-11-07 08:31:16,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:16,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781859568] [2021-11-07 08:31:16,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:16,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:16,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:31:16,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:31:16,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781859568] [2021-11-07 08:31:16,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781859568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:31:16,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:31:16,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:31:16,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990870205] [2021-11-07 08:31:16,625 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-07 08:31:16,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:31:16,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:31:16,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:31:16,626 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) [2021-11-07 08:31:16,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:31:16,651 INFO L93 Difference]: Finished difference Result 294 states and 462 transitions. [2021-11-07 08:31:16,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:31:16,652 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 294 states and 462 transitions. [2021-11-07 08:31:16,658 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 292 [2021-11-07 08:31:16,663 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 294 states to 294 states and 462 transitions. [2021-11-07 08:31:16,663 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 294 [2021-11-07 08:31:16,664 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 294 [2021-11-07 08:31:16,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 294 states and 462 transitions. [2021-11-07 08:31:16,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:31:16,667 INFO L681 BuchiCegarLoop]: Abstraction has 294 states and 462 transitions. [2021-11-07 08:31:16,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states and 462 transitions. [2021-11-07 08:31:16,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2021-11-07 08:31:16,688 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) [2021-11-07 08:31:16,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 462 transitions. [2021-11-07 08:31:16,692 INFO L704 BuchiCegarLoop]: Abstraction has 294 states and 462 transitions. [2021-11-07 08:31:16,692 INFO L587 BuchiCegarLoop]: Abstraction has 294 states and 462 transitions. [2021-11-07 08:31:16,692 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-07 08:31:16,693 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 294 states and 462 transitions. [2021-11-07 08:31:16,698 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 292 [2021-11-07 08:31:16,698 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:31:16,698 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:31:16,699 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-07 08:31:16,699 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] [2021-11-07 08:31:16,699 INFO L791 eck$LassoCheckResult]: Stem: 860#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 831#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;havoc main_~cond~0; 832#L183-1 [2021-11-07 08:31:16,700 INFO L793 eck$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 [2021-11-07 08:31:16,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:16,700 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-11-07 08:31:16,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:16,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609855283] [2021-11-07 08:31:16,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:16,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:16,729 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:31:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:16,764 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:31:16,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:16,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1959017738, now seen corresponding path program 1 times [2021-11-07 08:31:16,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:16,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802664473] [2021-11-07 08:31:16,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:16,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:16,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:31:16,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:31:16,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802664473] [2021-11-07 08:31:16,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802664473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:31:16,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:31:16,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:31:16,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328707849] [2021-11-07 08:31:16,845 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-07 08:31:16,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:31:16,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:31:16,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:31:16,846 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) [2021-11-07 08:31:16,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:31:16,901 INFO L93 Difference]: Finished difference Result 578 states and 898 transitions. [2021-11-07 08:31:16,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:31:16,902 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 578 states and 898 transitions. [2021-11-07 08:31:16,925 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 576 [2021-11-07 08:31:16,939 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 578 states to 578 states and 898 transitions. [2021-11-07 08:31:16,939 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 578 [2021-11-07 08:31:16,943 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 578 [2021-11-07 08:31:16,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 578 states and 898 transitions. [2021-11-07 08:31:16,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:31:16,951 INFO L681 BuchiCegarLoop]: Abstraction has 578 states and 898 transitions. [2021-11-07 08:31:16,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states and 898 transitions. [2021-11-07 08:31:17,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2021-11-07 08:31:17,071 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) [2021-11-07 08:31:17,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 898 transitions. [2021-11-07 08:31:17,096 INFO L704 BuchiCegarLoop]: Abstraction has 578 states and 898 transitions. [2021-11-07 08:31:17,096 INFO L587 BuchiCegarLoop]: Abstraction has 578 states and 898 transitions. [2021-11-07 08:31:17,097 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-07 08:31:17,097 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 578 states and 898 transitions. [2021-11-07 08:31:17,102 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 576 [2021-11-07 08:31:17,103 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:31:17,103 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:31:17,104 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-07 08:31:17,104 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] [2021-11-07 08:31:17,104 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 [2021-11-07 08:31:17,105 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 [2021-11-07 08:31:17,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:17,106 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-11-07 08:31:17,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:17,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653401066] [2021-11-07 08:31:17,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:17,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:17,118 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:31:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:17,133 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:31:17,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:17,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1141369288, now seen corresponding path program 1 times [2021-11-07 08:31:17,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:17,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127936933] [2021-11-07 08:31:17,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:17,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:17,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:31:17,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:31:17,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127936933] [2021-11-07 08:31:17,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127936933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:31:17,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:31:17,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:31:17,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622468792] [2021-11-07 08:31:17,200 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-07 08:31:17,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:31:17,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:31:17,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:31:17,202 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) [2021-11-07 08:31:17,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:31:17,253 INFO L93 Difference]: Finished difference Result 1138 states and 1746 transitions. [2021-11-07 08:31:17,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:31:17,253 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1138 states and 1746 transitions. [2021-11-07 08:31:17,270 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1136 [2021-11-07 08:31:17,283 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1138 states to 1138 states and 1746 transitions. [2021-11-07 08:31:17,283 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1138 [2021-11-07 08:31:17,284 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1138 [2021-11-07 08:31:17,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1138 states and 1746 transitions. [2021-11-07 08:31:17,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:31:17,287 INFO L681 BuchiCegarLoop]: Abstraction has 1138 states and 1746 transitions. [2021-11-07 08:31:17,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states and 1746 transitions. [2021-11-07 08:31:17,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1138. [2021-11-07 08:31:17,321 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) [2021-11-07 08:31:17,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1746 transitions. [2021-11-07 08:31:17,328 INFO L704 BuchiCegarLoop]: Abstraction has 1138 states and 1746 transitions. [2021-11-07 08:31:17,328 INFO L587 BuchiCegarLoop]: Abstraction has 1138 states and 1746 transitions. [2021-11-07 08:31:17,328 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-07 08:31:17,329 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1138 states and 1746 transitions. [2021-11-07 08:31:17,338 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1136 [2021-11-07 08:31:17,339 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:31:17,339 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:31:17,342 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-07 08:31:17,343 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] [2021-11-07 08:31:17,343 INFO L791 eck$LassoCheckResult]: Stem: 3463#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 3431#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;havoc main_~cond~0; 3432#L183-1 [2021-11-07 08:31:17,343 INFO L793 eck$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 [2021-11-07 08:31:17,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:17,344 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2021-11-07 08:31:17,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:17,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419619643] [2021-11-07 08:31:17,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:17,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:17,374 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:31:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:17,409 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:31:17,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:17,410 INFO L85 PathProgramCache]: Analyzing trace with hash -547574454, now seen corresponding path program 1 times [2021-11-07 08:31:17,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:17,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112031864] [2021-11-07 08:31:17,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:17,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:17,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:31:17,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:31:17,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112031864] [2021-11-07 08:31:17,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112031864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:31:17,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:31:17,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:31:17,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509479281] [2021-11-07 08:31:17,442 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-07 08:31:17,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:31:17,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:31:17,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:31:17,443 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) [2021-11-07 08:31:17,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:31:17,479 INFO L93 Difference]: Finished difference Result 2242 states and 3394 transitions. [2021-11-07 08:31:17,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:31:17,479 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2242 states and 3394 transitions. [2021-11-07 08:31:17,520 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2240 [2021-11-07 08:31:17,544 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2242 states to 2242 states and 3394 transitions. [2021-11-07 08:31:17,545 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2242 [2021-11-07 08:31:17,547 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2242 [2021-11-07 08:31:17,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2242 states and 3394 transitions. [2021-11-07 08:31:17,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:31:17,552 INFO L681 BuchiCegarLoop]: Abstraction has 2242 states and 3394 transitions. [2021-11-07 08:31:17,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states and 3394 transitions. [2021-11-07 08:31:17,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 2242. [2021-11-07 08:31:17,614 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) [2021-11-07 08:31:17,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 3394 transitions. [2021-11-07 08:31:17,627 INFO L704 BuchiCegarLoop]: Abstraction has 2242 states and 3394 transitions. [2021-11-07 08:31:17,627 INFO L587 BuchiCegarLoop]: Abstraction has 2242 states and 3394 transitions. [2021-11-07 08:31:17,627 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-07 08:31:17,627 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2242 states and 3394 transitions. [2021-11-07 08:31:17,646 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2240 [2021-11-07 08:31:17,647 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:31:17,647 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:31:17,649 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-07 08:31:17,649 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] [2021-11-07 08:31:17,649 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 [2021-11-07 08:31:17,649 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 [2021-11-07 08:31:17,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:17,653 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2021-11-07 08:31:17,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:17,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181792267] [2021-11-07 08:31:17,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:17,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:17,675 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:31:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:17,704 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:31:17,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:17,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1753248136, now seen corresponding path program 1 times [2021-11-07 08:31:17,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:17,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051842449] [2021-11-07 08:31:17,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:17,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:17,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:31:17,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:31:17,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051842449] [2021-11-07 08:31:17,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051842449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:31:17,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:31:17,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:31:17,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931268622] [2021-11-07 08:31:17,767 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-07 08:31:17,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:31:17,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:31:17,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:31:17,769 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) [2021-11-07 08:31:17,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:31:17,809 INFO L93 Difference]: Finished difference Result 4418 states and 6594 transitions. [2021-11-07 08:31:17,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:31:17,810 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4418 states and 6594 transitions. [2021-11-07 08:31:17,891 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 4416 [2021-11-07 08:31:17,929 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4418 states to 4418 states and 6594 transitions. [2021-11-07 08:31:17,930 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4418 [2021-11-07 08:31:17,934 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4418 [2021-11-07 08:31:17,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4418 states and 6594 transitions. [2021-11-07 08:31:17,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:31:17,943 INFO L681 BuchiCegarLoop]: Abstraction has 4418 states and 6594 transitions. [2021-11-07 08:31:17,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4418 states and 6594 transitions. [2021-11-07 08:31:18,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4418 to 4418. [2021-11-07 08:31:18,058 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) [2021-11-07 08:31:18,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4418 states to 4418 states and 6594 transitions. [2021-11-07 08:31:18,078 INFO L704 BuchiCegarLoop]: Abstraction has 4418 states and 6594 transitions. [2021-11-07 08:31:18,078 INFO L587 BuchiCegarLoop]: Abstraction has 4418 states and 6594 transitions. [2021-11-07 08:31:18,078 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-11-07 08:31:18,079 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4418 states and 6594 transitions. [2021-11-07 08:31:18,113 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 4416 [2021-11-07 08:31:18,113 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:31:18,114 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:31:18,116 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-07 08:31:18,116 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] [2021-11-07 08:31:18,116 INFO L791 eck$LassoCheckResult]: Stem: 13515#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 13482#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;havoc main_~cond~0; 13483#L183-1 [2021-11-07 08:31:18,117 INFO L793 eck$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 [2021-11-07 08:31:18,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:18,117 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2021-11-07 08:31:18,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:18,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27771932] [2021-11-07 08:31:18,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:18,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:18,142 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:31:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:18,169 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:31:18,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:18,180 INFO L85 PathProgramCache]: Analyzing trace with hash 164900234, now seen corresponding path program 1 times [2021-11-07 08:31:18,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:18,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840078825] [2021-11-07 08:31:18,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:18,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:18,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:31:18,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:31:18,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840078825] [2021-11-07 08:31:18,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840078825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:31:18,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:31:18,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:31:18,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20635683] [2021-11-07 08:31:18,235 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-07 08:31:18,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:31:18,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:31:18,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:31:18,236 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) [2021-11-07 08:31:18,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:31:18,300 INFO L93 Difference]: Finished difference Result 8706 states and 12802 transitions. [2021-11-07 08:31:18,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:31:18,301 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8706 states and 12802 transitions. [2021-11-07 08:31:18,437 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 8704 [2021-11-07 08:31:18,541 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8706 states to 8706 states and 12802 transitions. [2021-11-07 08:31:18,541 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8706 [2021-11-07 08:31:18,550 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8706 [2021-11-07 08:31:18,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8706 states and 12802 transitions. [2021-11-07 08:31:18,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:31:18,568 INFO L681 BuchiCegarLoop]: Abstraction has 8706 states and 12802 transitions. [2021-11-07 08:31:18,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8706 states and 12802 transitions. [2021-11-07 08:31:18,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8706 to 8706. [2021-11-07 08:31:18,845 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) [2021-11-07 08:31:18,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8706 states to 8706 states and 12802 transitions. [2021-11-07 08:31:18,881 INFO L704 BuchiCegarLoop]: Abstraction has 8706 states and 12802 transitions. [2021-11-07 08:31:18,881 INFO L587 BuchiCegarLoop]: Abstraction has 8706 states and 12802 transitions. [2021-11-07 08:31:18,881 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-11-07 08:31:18,881 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8706 states and 12802 transitions. [2021-11-07 08:31:18,925 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 8704 [2021-11-07 08:31:18,925 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:31:18,926 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:31:18,930 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-07 08:31:18,930 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] [2021-11-07 08:31:18,930 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 [2021-11-07 08:31:18,931 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 [2021-11-07 08:31:18,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:18,931 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2021-11-07 08:31:18,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:18,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103111106] [2021-11-07 08:31:18,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:18,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:18,952 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:31:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:18,967 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:31:18,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:18,969 INFO L85 PathProgramCache]: Analyzing trace with hash -856168120, now seen corresponding path program 1 times [2021-11-07 08:31:18,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:18,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253307351] [2021-11-07 08:31:18,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:18,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:19,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:31:19,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:31:19,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253307351] [2021-11-07 08:31:19,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253307351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:31:19,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:31:19,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:31:19,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18060204] [2021-11-07 08:31:19,031 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-07 08:31:19,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:31:19,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:31:19,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:31:19,032 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) [2021-11-07 08:31:19,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:31:19,117 INFO L93 Difference]: Finished difference Result 17154 states and 24834 transitions. [2021-11-07 08:31:19,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:31:19,118 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17154 states and 24834 transitions. [2021-11-07 08:31:19,247 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 17152 [2021-11-07 08:31:19,465 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17154 states to 17154 states and 24834 transitions. [2021-11-07 08:31:19,465 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17154 [2021-11-07 08:31:19,481 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17154 [2021-11-07 08:31:19,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17154 states and 24834 transitions. [2021-11-07 08:31:19,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:31:19,511 INFO L681 BuchiCegarLoop]: Abstraction has 17154 states and 24834 transitions. [2021-11-07 08:31:19,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17154 states and 24834 transitions. [2021-11-07 08:31:19,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17154 to 17154. [2021-11-07 08:31:19,935 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) [2021-11-07 08:31:20,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17154 states to 17154 states and 24834 transitions. [2021-11-07 08:31:20,098 INFO L704 BuchiCegarLoop]: Abstraction has 17154 states and 24834 transitions. [2021-11-07 08:31:20,098 INFO L587 BuchiCegarLoop]: Abstraction has 17154 states and 24834 transitions. [2021-11-07 08:31:20,099 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-11-07 08:31:20,099 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17154 states and 24834 transitions. [2021-11-07 08:31:20,150 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 17152 [2021-11-07 08:31:20,150 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:31:20,150 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:31:20,151 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-07 08:31:20,151 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] [2021-11-07 08:31:20,151 INFO L791 eck$LassoCheckResult]: Stem: 52512#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 52479#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;havoc main_~cond~0; 52480#L183-1 [2021-11-07 08:31:20,151 INFO L793 eck$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 [2021-11-07 08:31:20,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:20,152 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 10 times [2021-11-07 08:31:20,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:20,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467270388] [2021-11-07 08:31:20,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:20,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:20,158 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:31:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:20,165 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:31:20,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:20,166 INFO L85 PathProgramCache]: Analyzing trace with hash -2136031798, now seen corresponding path program 1 times [2021-11-07 08:31:20,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:20,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946509606] [2021-11-07 08:31:20,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:20,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:20,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:31:20,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:31:20,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946509606] [2021-11-07 08:31:20,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946509606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:31:20,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:31:20,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:31:20,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716756493] [2021-11-07 08:31:20,186 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-07 08:31:20,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:31:20,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:31:20,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:31:20,188 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) [2021-11-07 08:31:20,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:31:20,472 INFO L93 Difference]: Finished difference Result 33794 states and 48130 transitions. [2021-11-07 08:31:20,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:31:20,473 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33794 states and 48130 transitions. [2021-11-07 08:31:20,939 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 33792 [2021-11-07 08:31:21,178 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33794 states to 33794 states and 48130 transitions. [2021-11-07 08:31:21,179 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33794 [2021-11-07 08:31:21,212 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33794 [2021-11-07 08:31:21,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33794 states and 48130 transitions. [2021-11-07 08:31:21,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:31:21,246 INFO L681 BuchiCegarLoop]: Abstraction has 33794 states and 48130 transitions. [2021-11-07 08:31:21,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33794 states and 48130 transitions. [2021-11-07 08:31:21,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33794 to 33794. [2021-11-07 08:31:21,975 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) [2021-11-07 08:31:22,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33794 states to 33794 states and 48130 transitions. [2021-11-07 08:31:22,110 INFO L704 BuchiCegarLoop]: Abstraction has 33794 states and 48130 transitions. [2021-11-07 08:31:22,110 INFO L587 BuchiCegarLoop]: Abstraction has 33794 states and 48130 transitions. [2021-11-07 08:31:22,110 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-11-07 08:31:22,111 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33794 states and 48130 transitions. [2021-11-07 08:31:22,225 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 33792 [2021-11-07 08:31:22,225 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:31:22,226 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:31:22,226 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-07 08:31:22,226 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] [2021-11-07 08:31:22,227 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 [2021-11-07 08:31:22,227 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 [2021-11-07 08:31:22,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:22,228 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 11 times [2021-11-07 08:31:22,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:22,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848323559] [2021-11-07 08:31:22,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:22,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:22,237 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:31:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:22,252 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:31:22,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:22,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1572129484, now seen corresponding path program 1 times [2021-11-07 08:31:22,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:22,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560616012] [2021-11-07 08:31:22,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:22,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:22,395 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:31:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:22,408 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:31:22,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:22,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1068122098, now seen corresponding path program 1 times [2021-11-07 08:31:22,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:22,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315158230] [2021-11-07 08:31:22,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:22,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:22,436 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:31:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:22,456 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:31:23,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.11 08:31:23 BoogieIcfgContainer [2021-11-07 08:31:23,281 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-07 08:31:23,282 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 08:31:23,282 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 08:31:23,282 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 08:31:23,283 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:31:15" (3/4) ... [2021-11-07 08:31:23,286 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-07 08:31:23,337 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7989127e-e151-4cdd-9553-87c770f56fd5/bin/uautomizer-AkOaLMaTGY/witness.graphml [2021-11-07 08:31:23,337 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 08:31:23,339 INFO L168 Benchmark]: Toolchain (without parser) took 8791.57 ms. Allocated memory was 117.4 MB in the beginning and 931.1 MB in the end (delta: 813.7 MB). Free memory was 87.6 MB in the beginning and 676.6 MB in the end (delta: -589.1 MB). Peak memory consumption was 225.3 MB. Max. memory is 16.1 GB. [2021-11-07 08:31:23,340 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 117.4 MB. Free memory is still 72.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:31:23,340 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.01 ms. Allocated memory was 117.4 MB in the beginning and 153.1 MB in the end (delta: 35.7 MB). Free memory was 87.2 MB in the beginning and 127.8 MB in the end (delta: -40.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 08:31:23,341 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.68 ms. Allocated memory is still 153.1 MB. Free memory was 127.8 MB in the beginning and 125.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:31:23,341 INFO L168 Benchmark]: Boogie Preprocessor took 35.40 ms. Allocated memory is still 153.1 MB. Free memory was 125.8 MB in the beginning and 124.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:31:23,342 INFO L168 Benchmark]: RCFGBuilder took 570.71 ms. Allocated memory is still 153.1 MB. Free memory was 124.4 MB in the beginning and 111.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 08:31:23,342 INFO L168 Benchmark]: BuchiAutomizer took 7718.01 ms. Allocated memory was 153.1 MB in the beginning and 931.1 MB in the end (delta: 778.0 MB). Free memory was 111.8 MB in the beginning and 679.8 MB in the end (delta: -568.0 MB). Peak memory consumption was 211.3 MB. Max. memory is 16.1 GB. [2021-11-07 08:31:23,343 INFO L168 Benchmark]: Witness Printer took 55.40 ms. Allocated memory is still 931.1 MB. Free memory was 679.8 MB in the beginning and 676.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 08:31:23,346 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 117.4 MB. Free memory is still 72.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 356.01 ms. Allocated memory was 117.4 MB in the beginning and 153.1 MB in the end (delta: 35.7 MB). Free memory was 87.2 MB in the beginning and 127.8 MB in the end (delta: -40.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.68 ms. Allocated memory is still 153.1 MB. Free memory was 127.8 MB in the beginning and 125.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.40 ms. Allocated memory is still 153.1 MB. Free memory was 125.8 MB in the beginning and 124.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 570.71 ms. Allocated memory is still 153.1 MB. Free memory was 124.4 MB in the beginning and 111.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 7718.01 ms. Allocated memory was 153.1 MB in the beginning and 931.1 MB in the end (delta: 778.0 MB). Free memory was 111.8 MB in the beginning and 679.8 MB in the end (delta: -568.0 MB). Peak memory consumption was 211.3 MB. Max. memory is 16.1 GB. * Witness Printer took 55.40 ms. Allocated memory is still 931.1 MB. Free memory was 679.8 MB in the beginning and 676.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 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 7.6s and 11 iterations. TraceHistogramMax:1. Analysis of lassos took 2.3s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 0. Minimization of det autom 10. Minimization of nondet autom 0. Automata minimization 2.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 1.5s Buchi closure took 0.0s. 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@61393402=0, p9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2a5d0d22=0, p8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1408581=0, lk12=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1990788d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3121d699=0, lk10=0, p11=0, lk11=0, p12=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1f8d22b7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@19020e94=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@77f93436=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@72f3471c=11, cond=11, NULL=20363, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7357e982=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@76be16e4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6cf05cae=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@53dadab7=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! [2021-11-07 08:31:23,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7989127e-e151-4cdd-9553-87c770f56fd5/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)