./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/ldv-regression/test27-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/ldv-regression/test27-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF --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 78863f43fa37191b47f0d738bb1bc2018c82b38cb68dad85c455cdbd7fd69aa4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:42:55,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:42:55,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:42:56,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:42:56,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:42:56,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:42:56,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:42:56,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:42:56,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:42:56,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:42:56,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:42:56,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:42:56,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:42:56,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:42:56,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:42:56,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:42:56,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:42:56,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:42:56,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:42:56,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:42:56,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:42:56,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:42:56,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:42:56,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:42:56,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:42:56,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:42:56,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:42:56,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:42:56,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:42:56,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:42:56,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:42:56,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:42:56,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:42:56,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:42:56,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:42:56,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:42:56,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:42:56,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:42:56,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:42:56,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:42:56,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:42:56,106 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-20 05:42:56,160 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:42:56,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:42:56,164 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:42:56,164 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:42:56,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:42:56,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:42:56,167 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:42:56,167 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-20 05:42:56,167 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-20 05:42:56,168 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-20 05:42:56,169 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-20 05:42:56,169 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-20 05:42:56,169 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-20 05:42:56,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:42:56,170 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:42:56,170 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:42:56,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:42:56,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:42:56,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:42:56,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-20 05:42:56,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-20 05:42:56,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-20 05:42:56,172 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:42:56,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:42:56,172 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-20 05:42:56,173 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:42:56,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-20 05:42:56,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:42:56,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:42:56,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:42:56,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:42:56,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:42:56,177 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-20 05:42:56,177 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_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78863f43fa37191b47f0d738bb1bc2018c82b38cb68dad85c455cdbd7fd69aa4 [2021-11-20 05:42:56,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:42:56,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:42:56,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:42:56,533 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:42:56,534 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:42:56,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-regression/test27-1.c [2021-11-20 05:42:56,603 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/data/74185ac7d/9c19a883eba64506bab0c8d66d92c22b/FLAG5fe97fe0a [2021-11-20 05:42:57,036 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:42:57,037 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/sv-benchmarks/c/ldv-regression/test27-1.c [2021-11-20 05:42:57,043 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/data/74185ac7d/9c19a883eba64506bab0c8d66d92c22b/FLAG5fe97fe0a [2021-11-20 05:42:57,426 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/data/74185ac7d/9c19a883eba64506bab0c8d66d92c22b [2021-11-20 05:42:57,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:42:57,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:42:57,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:42:57,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:42:57,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:42:57,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:42:57" (1/1) ... [2021-11-20 05:42:57,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c65e051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:57, skipping insertion in model container [2021-11-20 05:42:57,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:42:57" (1/1) ... [2021-11-20 05:42:57,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:42:57,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:42:57,671 WARN L230 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_78fe6737-1367-45b6-a692-295beb33a1d8/sv-benchmarks/c/ldv-regression/test27-1.c[1154,1167] [2021-11-20 05:42:57,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:42:57,694 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:42:57,736 WARN L230 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_78fe6737-1367-45b6-a692-295beb33a1d8/sv-benchmarks/c/ldv-regression/test27-1.c[1154,1167] [2021-11-20 05:42:57,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:42:57,754 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:42:57,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:57 WrapperNode [2021-11-20 05:42:57,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:42:57,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:42:57,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:42:57,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:42:57,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:57" (1/1) ... [2021-11-20 05:42:57,774 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:57" (1/1) ... [2021-11-20 05:42:57,798 INFO L137 Inliner]: procedures = 16, calls = 42, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 110 [2021-11-20 05:42:57,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:42:57,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:42:57,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:42:57,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:42:57,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:57" (1/1) ... [2021-11-20 05:42:57,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:57" (1/1) ... [2021-11-20 05:42:57,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:57" (1/1) ... [2021-11-20 05:42:57,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:57" (1/1) ... [2021-11-20 05:42:57,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:57" (1/1) ... [2021-11-20 05:42:57,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:57" (1/1) ... [2021-11-20 05:42:57,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:57" (1/1) ... [2021-11-20 05:42:57,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:42:57,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:42:57,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:42:57,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:42:57,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:57" (1/1) ... [2021-11-20 05:42:57,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:42:57,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:42:57,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:42:57,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-20 05:42:57,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:42:57,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:42:57,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:42:57,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:42:57,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:42:57,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:42:57,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:42:57,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:42:57,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:42:57,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:42:58,062 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:42:58,064 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:42:58,416 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:42:58,423 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:42:58,423 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 05:42:58,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:42:58 BoogieIcfgContainer [2021-11-20 05:42:58,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:42:58,426 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-20 05:42:58,426 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-20 05:42:58,430 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-20 05:42:58,431 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 05:42:58,431 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 05:42:57" (1/3) ... [2021-11-20 05:42:58,433 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4c8b572c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 05:42:58, skipping insertion in model container [2021-11-20 05:42:58,433 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 05:42:58,433 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:57" (2/3) ... [2021-11-20 05:42:58,433 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4c8b572c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 05:42:58, skipping insertion in model container [2021-11-20 05:42:58,434 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 05:42:58,434 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:42:58" (3/3) ... [2021-11-20 05:42:58,435 INFO L388 chiAutomizerObserver]: Analyzing ICFG test27-1.c [2021-11-20 05:42:58,483 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-20 05:42:58,484 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-20 05:42:58,484 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-20 05:42:58,484 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-20 05:42:58,484 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-20 05:42:58,484 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-20 05:42:58,485 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-20 05:42:58,485 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-20 05:42:58,499 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 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) [2021-11-20 05:42:58,518 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-11-20 05:42:58,519 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 05:42:58,519 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 05:42:58,525 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 05:42:58,525 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-20 05:42:58,525 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-20 05:42:58,526 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 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) [2021-11-20 05:42:58,528 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-11-20 05:42:58,528 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 05:42:58,528 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 05:42:58,528 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 05:42:58,529 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-20 05:42:58,536 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet10#1, main_#t~post9#1, main_~j~0#1, main_#t~mem11#1.base, main_#t~mem11#1.offset, main_#t~mem12#1.base, main_#t~mem12#1.offset, main_#t~mem13#1.base, main_#t~mem13#1.offset, main_#t~mem14#1, main_#t~mem15#1.base, main_#t~mem15#1.offset, main_#t~mem16#1.base, main_#t~mem16#1.offset, main_#t~mem17#1, main_#t~pre19#1, main_#t~mem18#1, main_#t~ret20#1, main_~#cont~0#1.base, main_~#cont~0#1.offset, main_~#dummy~0#1.base, main_~#dummy~0#1.offset, main_~#dummies~0#1.base, main_~#dummies~0#1.offset, main_~#a~0#1.base, main_~#a~0#1.offset, main_~i~0#1, main_~pa~0#1.base, main_~pa~0#1.offset;call main_~#cont~0#1.base, main_~#cont~0#1.offset := #Ultimate.allocOnStack(4);call main_~#dummy~0#1.base, main_~#dummy~0#1.offset := #Ultimate.allocOnStack(4);call main_~#dummies~0#1.base, main_~#dummies~0#1.offset := #Ultimate.allocOnStack(40);call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(40);havoc main_~i~0#1;havoc main_~pa~0#1.base, main_~pa~0#1.offset;main_~i~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;main_~j~0#1 := 0; 14#L29-3true [2021-11-20 05:42:58,536 INFO L793 eck$LassoCheckResult]: Loop: 14#L29-3true assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 16#L29-2true main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 14#L29-3true [2021-11-20 05:42:58,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:58,543 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-20 05:42:58,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:58,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264574501] [2021-11-20 05:42:58,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:58,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:42:58,662 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:42:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:42:58,746 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:42:58,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:58,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2021-11-20 05:42:58,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:58,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608721969] [2021-11-20 05:42:58,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:58,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:42:58,790 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:42:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:42:58,838 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:42:58,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:58,839 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-11-20 05:42:58,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:58,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181097095] [2021-11-20 05:42:58,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:58,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:42:58,909 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:42:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:42:58,971 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:43:00,193 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 05:43:00,194 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 05:43:00,194 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 05:43:00,194 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 05:43:00,194 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 05:43:00,195 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:43:00,195 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 05:43:00,195 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 05:43:00,195 INFO L133 ssoRankerPreferences]: Filename of dumped script: test27-1.c_Iteration1_Lasso [2021-11-20 05:43:00,195 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 05:43:00,196 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 05:43:00,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,698 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,717 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:00,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:43:01,150 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 05:43:01,156 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 05:43:01,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:43:01,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:43:01,161 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:43:01,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-20 05:43:01,170 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 05:43:01,182 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:43:01,182 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:43:01,183 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:43:01,183 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:43:01,191 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 05:43:01,192 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 05:43:01,203 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 05:43:01,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:43:01,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:43:01,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:43:01,246 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:43:01,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-20 05:43:01,251 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 05:43:01,259 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:43:01,259 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:43:01,259 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:43:01,259 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:43:01,267 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 05:43:01,267 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 05:43:01,275 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 05:43:01,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:43:01,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:43:01,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:43:01,300 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:43:01,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-20 05:43:01,301 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 05:43:01,308 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:43:01,308 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 05:43:01,309 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:43:01,309 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:43:01,309 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:43:01,310 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 05:43:01,310 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 05:43:01,324 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 05:43:01,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:43:01,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:43:01,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:43:01,360 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:43:01,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-20 05:43:01,362 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 05:43:01,369 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:43:01,369 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 05:43:01,370 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:43:01,370 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:43:01,370 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:43:01,370 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 05:43:01,371 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 05:43:01,372 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 05:43:01,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:43:01,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:43:01,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:43:01,396 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:43:01,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-20 05:43:01,404 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 05:43:01,411 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:43:01,411 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:43:01,411 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:43:01,411 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:43:01,421 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 05:43:01,421 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 05:43:01,454 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 05:43:01,495 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2021-11-20 05:43:01,495 INFO L444 ModelExtractionUtils]: 6 out of 19 variables were initially zero. Simplification set additionally 10 variables to zero. [2021-11-20 05:43:01,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:43:01,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:43:01,504 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:43:01,539 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 05:43:01,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-20 05:43:01,560 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-11-20 05:43:01,560 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 05:43:01,560 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, v_rep(select #length ULTIMATE.start_main_~#a~0#1.base)_1) = -8*ULTIMATE.start_main_~j~0#1 + 19*v_rep(select #length ULTIMATE.start_main_~#a~0#1.base)_1 Supporting invariants [] [2021-11-20 05:43:01,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:43:01,756 INFO L297 tatePredicateManager]: 26 out of 26 supporting invariants were superfluous and have been removed [2021-11-20 05:43:01,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:43:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:43:01,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:43:01,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:43:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:43:01,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:43:01,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:43:01,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:43:01,900 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-20 05:43:01,902 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 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 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-20 05:43:01,965 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 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 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) Result 39 states and 56 transitions. Complement of second has 8 states. [2021-11-20 05:43:01,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-20 05:43:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-20 05:43:01,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 35 transitions. [2021-11-20 05:43:01,973 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 35 transitions. Stem has 2 letters. Loop has 2 letters. [2021-11-20 05:43:01,974 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 05:43:01,974 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 35 transitions. Stem has 4 letters. Loop has 2 letters. [2021-11-20 05:43:01,974 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 05:43:01,974 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 35 transitions. Stem has 2 letters. Loop has 4 letters. [2021-11-20 05:43:01,974 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 05:43:01,975 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 56 transitions. [2021-11-20 05:43:01,979 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-20 05:43:01,982 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 9 states and 11 transitions. [2021-11-20 05:43:01,983 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-11-20 05:43:01,983 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-11-20 05:43:01,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2021-11-20 05:43:01,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:43:01,984 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-11-20 05:43:01,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2021-11-20 05:43:02,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-20 05:43:02,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 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) [2021-11-20 05:43:02,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2021-11-20 05:43:02,004 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-11-20 05:43:02,004 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-11-20 05:43:02,004 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-20 05:43:02,004 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2021-11-20 05:43:02,004 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-20 05:43:02,005 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 05:43:02,005 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 05:43:02,005 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-20 05:43:02,005 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-20 05:43:02,006 INFO L791 eck$LassoCheckResult]: Stem: 201#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 202#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet10#1, main_#t~post9#1, main_~j~0#1, main_#t~mem11#1.base, main_#t~mem11#1.offset, main_#t~mem12#1.base, main_#t~mem12#1.offset, main_#t~mem13#1.base, main_#t~mem13#1.offset, main_#t~mem14#1, main_#t~mem15#1.base, main_#t~mem15#1.offset, main_#t~mem16#1.base, main_#t~mem16#1.offset, main_#t~mem17#1, main_#t~pre19#1, main_#t~mem18#1, main_#t~ret20#1, main_~#cont~0#1.base, main_~#cont~0#1.offset, main_~#dummy~0#1.base, main_~#dummy~0#1.offset, main_~#dummies~0#1.base, main_~#dummies~0#1.offset, main_~#a~0#1.base, main_~#a~0#1.offset, main_~i~0#1, main_~pa~0#1.base, main_~pa~0#1.offset;call main_~#cont~0#1.base, main_~#cont~0#1.offset := #Ultimate.allocOnStack(4);call main_~#dummy~0#1.base, main_~#dummy~0#1.offset := #Ultimate.allocOnStack(4);call main_~#dummies~0#1.base, main_~#dummies~0#1.offset := #Ultimate.allocOnStack(40);call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(40);havoc main_~i~0#1;havoc main_~pa~0#1.base, main_~pa~0#1.offset;main_~i~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;main_~j~0#1 := 0; 203#L29-3 assume !(main_~j~0#1 < 10); 204#L29-4 assume main_~i~0#1 > 0 && main_~i~0#1 < 9;call write~int(main_~i~0#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);call write~$Pointer$(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * (main_~i~0#1 - 1), main_~#dummy~0#1.base, main_~#dummy~0#1.offset, 4);call write~$Pointer$(main_~#dummy~0#1.base, main_~#dummy~0#1.offset, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * (1 + main_~i~0#1), 4);call write~$Pointer$(main_~#dummies~0#1.base, 4 + main_~#dummies~0#1.offset, main_~#cont~0#1.base, main_~#cont~0#1.offset, 4);call main_#t~mem11#1.base, main_#t~mem11#1.offset := read~$Pointer$(main_~#cont~0#1.base, main_~#cont~0#1.offset, 4);call main_#t~mem12#1.base, main_#t~mem12#1.offset := read~$Pointer$(main_#t~mem11#1.base, main_#t~mem11#1.offset + 4 * main_~i~0#1, 4);call main_#t~mem13#1.base, main_#t~mem13#1.offset := read~$Pointer$(main_#t~mem12#1.base, main_#t~mem12#1.offset, 4);main_~pa~0#1.base, main_~pa~0#1.offset := main_#t~mem13#1.base, 4 + main_#t~mem13#1.offset;havoc main_#t~mem11#1.base, main_#t~mem11#1.offset;havoc main_#t~mem12#1.base, main_#t~mem12#1.offset;havoc main_#t~mem13#1.base, main_#t~mem13#1.offset;call main_#t~mem14#1 := read~int(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4); 199#L41 assume main_#t~mem14#1 > 0;havoc main_#t~mem14#1;call main_#t~mem15#1.base, main_#t~mem15#1.offset := read~$Pointer$(main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * (1 + main_~i~0#1), 4);call main_#t~mem16#1.base, main_#t~mem16#1.offset := read~$Pointer$(main_#t~mem15#1.base, main_#t~mem15#1.offset, 4);call main_#t~mem17#1 := read~int(main_#t~mem16#1.base, 4 + main_#t~mem16#1.offset, 4);main_~i~0#1 := main_#t~mem17#1 - 10;havoc main_#t~mem15#1.base, main_#t~mem15#1.offset;havoc main_#t~mem16#1.base, main_#t~mem16#1.offset;havoc main_#t~mem17#1; 200#L43-3 [2021-11-20 05:43:02,006 INFO L793 eck$LassoCheckResult]: Loop: 200#L43-3 call main_#t~mem18#1 := read~int(main_~pa~0#1.base, main_~pa~0#1.offset, 4); 207#L43-1 assume !!(main_~i~0#1 < main_#t~mem18#1);havoc main_#t~mem18#1;main_#t~pre19#1 := 1 + main_~i~0#1;main_~i~0#1 := 1 + main_~i~0#1;havoc main_#t~pre19#1; 200#L43-3 [2021-11-20 05:43:02,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:43:02,006 INFO L85 PathProgramCache]: Analyzing trace with hash 28697000, now seen corresponding path program 1 times [2021-11-20 05:43:02,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:43:02,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237211] [2021-11-20 05:43:02,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:43:02,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:43:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:43:02,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:43:02,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:43:02,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237211] [2021-11-20 05:43:02,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:43:02,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:43:02,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:43:02,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111235851] [2021-11-20 05:43:02,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:43:02,053 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 05:43:02,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:43:02,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1798, now seen corresponding path program 1 times [2021-11-20 05:43:02,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:43:02,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047169258] [2021-11-20 05:43:02,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:43:02,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:43:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:43:02,059 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:43:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:43:02,064 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:43:02,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:43:02,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:43:02,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:43:02,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:43:02,133 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-20 05:43:02,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:43:02,148 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2021-11-20 05:43:02,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:43:02,149 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2021-11-20 05:43:02,150 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-20 05:43:02,150 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 11 transitions. [2021-11-20 05:43:02,151 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-11-20 05:43:02,151 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-11-20 05:43:02,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 11 transitions. [2021-11-20 05:43:02,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:43:02,151 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-11-20 05:43:02,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 11 transitions. [2021-11-20 05:43:02,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-11-20 05:43:02,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 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) [2021-11-20 05:43:02,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-11-20 05:43:02,153 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-11-20 05:43:02,153 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-11-20 05:43:02,153 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-20 05:43:02,153 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2021-11-20 05:43:02,153 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-20 05:43:02,154 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 05:43:02,154 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 05:43:02,154 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:43:02,154 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-20 05:43:02,154 INFO L791 eck$LassoCheckResult]: Stem: 226#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 227#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet10#1, main_#t~post9#1, main_~j~0#1, main_#t~mem11#1.base, main_#t~mem11#1.offset, main_#t~mem12#1.base, main_#t~mem12#1.offset, main_#t~mem13#1.base, main_#t~mem13#1.offset, main_#t~mem14#1, main_#t~mem15#1.base, main_#t~mem15#1.offset, main_#t~mem16#1.base, main_#t~mem16#1.offset, main_#t~mem17#1, main_#t~pre19#1, main_#t~mem18#1, main_#t~ret20#1, main_~#cont~0#1.base, main_~#cont~0#1.offset, main_~#dummy~0#1.base, main_~#dummy~0#1.offset, main_~#dummies~0#1.base, main_~#dummies~0#1.offset, main_~#a~0#1.base, main_~#a~0#1.offset, main_~i~0#1, main_~pa~0#1.base, main_~pa~0#1.offset;call main_~#cont~0#1.base, main_~#cont~0#1.offset := #Ultimate.allocOnStack(4);call main_~#dummy~0#1.base, main_~#dummy~0#1.offset := #Ultimate.allocOnStack(4);call main_~#dummies~0#1.base, main_~#dummies~0#1.offset := #Ultimate.allocOnStack(40);call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(40);havoc main_~i~0#1;havoc main_~pa~0#1.base, main_~pa~0#1.offset;main_~i~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;main_~j~0#1 := 0; 228#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 229#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 230#L29-3 assume !(main_~j~0#1 < 10); 231#L29-4 assume main_~i~0#1 > 0 && main_~i~0#1 < 9;call write~int(main_~i~0#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);call write~$Pointer$(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * (main_~i~0#1 - 1), main_~#dummy~0#1.base, main_~#dummy~0#1.offset, 4);call write~$Pointer$(main_~#dummy~0#1.base, main_~#dummy~0#1.offset, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * (1 + main_~i~0#1), 4);call write~$Pointer$(main_~#dummies~0#1.base, 4 + main_~#dummies~0#1.offset, main_~#cont~0#1.base, main_~#cont~0#1.offset, 4);call main_#t~mem11#1.base, main_#t~mem11#1.offset := read~$Pointer$(main_~#cont~0#1.base, main_~#cont~0#1.offset, 4);call main_#t~mem12#1.base, main_#t~mem12#1.offset := read~$Pointer$(main_#t~mem11#1.base, main_#t~mem11#1.offset + 4 * main_~i~0#1, 4);call main_#t~mem13#1.base, main_#t~mem13#1.offset := read~$Pointer$(main_#t~mem12#1.base, main_#t~mem12#1.offset, 4);main_~pa~0#1.base, main_~pa~0#1.offset := main_#t~mem13#1.base, 4 + main_#t~mem13#1.offset;havoc main_#t~mem11#1.base, main_#t~mem11#1.offset;havoc main_#t~mem12#1.base, main_#t~mem12#1.offset;havoc main_#t~mem13#1.base, main_#t~mem13#1.offset;call main_#t~mem14#1 := read~int(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4); 224#L41 assume main_#t~mem14#1 > 0;havoc main_#t~mem14#1;call main_#t~mem15#1.base, main_#t~mem15#1.offset := read~$Pointer$(main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * (1 + main_~i~0#1), 4);call main_#t~mem16#1.base, main_#t~mem16#1.offset := read~$Pointer$(main_#t~mem15#1.base, main_#t~mem15#1.offset, 4);call main_#t~mem17#1 := read~int(main_#t~mem16#1.base, 4 + main_#t~mem16#1.offset, 4);main_~i~0#1 := main_#t~mem17#1 - 10;havoc main_#t~mem15#1.base, main_#t~mem15#1.offset;havoc main_#t~mem16#1.base, main_#t~mem16#1.offset;havoc main_#t~mem17#1; 225#L43-3 [2021-11-20 05:43:02,154 INFO L793 eck$LassoCheckResult]: Loop: 225#L43-3 call main_#t~mem18#1 := read~int(main_~pa~0#1.base, main_~pa~0#1.offset, 4); 232#L43-1 assume !!(main_~i~0#1 < main_#t~mem18#1);havoc main_#t~mem18#1;main_#t~pre19#1 := 1 + main_~i~0#1;main_~i~0#1 := 1 + main_~i~0#1;havoc main_#t~pre19#1; 225#L43-3 [2021-11-20 05:43:02,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:43:02,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1809669606, now seen corresponding path program 1 times [2021-11-20 05:43:02,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:43:02,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924882159] [2021-11-20 05:43:02,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:43:02,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:43:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:43:02,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:43:02,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:43:02,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924882159] [2021-11-20 05:43:02,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924882159] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:43:02,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92437560] [2021-11-20 05:43:02,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:43:02,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:43:02,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:43:02,199 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:43:02,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 05:43:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:43:02,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:43:02,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:43:02,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:43:02,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:43:02,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:43:02,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92437560] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:43:02,334 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:43:02,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-20 05:43:02,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180845365] [2021-11-20 05:43:02,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:43:02,335 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 05:43:02,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:43:02,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1798, now seen corresponding path program 2 times [2021-11-20 05:43:02,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:43:02,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706439104] [2021-11-20 05:43:02,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:43:02,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:43:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:43:02,342 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:43:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:43:02,348 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:43:02,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:43:02,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:43:02,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:43:02,385 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 3 Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-11-20 05:43:02,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:43:02,425 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-11-20 05:43:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:43:02,427 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 16 transitions. [2021-11-20 05:43:02,429 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-20 05:43:02,430 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 16 transitions. [2021-11-20 05:43:02,430 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-11-20 05:43:02,430 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-11-20 05:43:02,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 16 transitions. [2021-11-20 05:43:02,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:43:02,431 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-11-20 05:43:02,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 16 transitions. [2021-11-20 05:43:02,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-20 05:43:02,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 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) [2021-11-20 05:43:02,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-11-20 05:43:02,434 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-11-20 05:43:02,434 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-11-20 05:43:02,434 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-20 05:43:02,434 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 16 transitions. [2021-11-20 05:43:02,437 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-20 05:43:02,437 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 05:43:02,437 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 05:43:02,439 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1, 1, 1] [2021-11-20 05:43:02,439 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-20 05:43:02,439 INFO L791 eck$LassoCheckResult]: Stem: 300#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 301#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet10#1, main_#t~post9#1, main_~j~0#1, main_#t~mem11#1.base, main_#t~mem11#1.offset, main_#t~mem12#1.base, main_#t~mem12#1.offset, main_#t~mem13#1.base, main_#t~mem13#1.offset, main_#t~mem14#1, main_#t~mem15#1.base, main_#t~mem15#1.offset, main_#t~mem16#1.base, main_#t~mem16#1.offset, main_#t~mem17#1, main_#t~pre19#1, main_#t~mem18#1, main_#t~ret20#1, main_~#cont~0#1.base, main_~#cont~0#1.offset, main_~#dummy~0#1.base, main_~#dummy~0#1.offset, main_~#dummies~0#1.base, main_~#dummies~0#1.offset, main_~#a~0#1.base, main_~#a~0#1.offset, main_~i~0#1, main_~pa~0#1.base, main_~pa~0#1.offset;call main_~#cont~0#1.base, main_~#cont~0#1.offset := #Ultimate.allocOnStack(4);call main_~#dummy~0#1.base, main_~#dummy~0#1.offset := #Ultimate.allocOnStack(4);call main_~#dummies~0#1.base, main_~#dummies~0#1.offset := #Ultimate.allocOnStack(40);call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(40);havoc main_~i~0#1;havoc main_~pa~0#1.base, main_~pa~0#1.offset;main_~i~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;main_~j~0#1 := 0; 296#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 297#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 298#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 299#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 304#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 308#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 307#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 306#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 305#L29-3 assume !(main_~j~0#1 < 10); 302#L29-4 assume main_~i~0#1 > 0 && main_~i~0#1 < 9;call write~int(main_~i~0#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);call write~$Pointer$(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * (main_~i~0#1 - 1), main_~#dummy~0#1.base, main_~#dummy~0#1.offset, 4);call write~$Pointer$(main_~#dummy~0#1.base, main_~#dummy~0#1.offset, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * (1 + main_~i~0#1), 4);call write~$Pointer$(main_~#dummies~0#1.base, 4 + main_~#dummies~0#1.offset, main_~#cont~0#1.base, main_~#cont~0#1.offset, 4);call main_#t~mem11#1.base, main_#t~mem11#1.offset := read~$Pointer$(main_~#cont~0#1.base, main_~#cont~0#1.offset, 4);call main_#t~mem12#1.base, main_#t~mem12#1.offset := read~$Pointer$(main_#t~mem11#1.base, main_#t~mem11#1.offset + 4 * main_~i~0#1, 4);call main_#t~mem13#1.base, main_#t~mem13#1.offset := read~$Pointer$(main_#t~mem12#1.base, main_#t~mem12#1.offset, 4);main_~pa~0#1.base, main_~pa~0#1.offset := main_#t~mem13#1.base, 4 + main_#t~mem13#1.offset;havoc main_#t~mem11#1.base, main_#t~mem11#1.offset;havoc main_#t~mem12#1.base, main_#t~mem12#1.offset;havoc main_#t~mem13#1.base, main_#t~mem13#1.offset;call main_#t~mem14#1 := read~int(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4); 294#L41 assume main_#t~mem14#1 > 0;havoc main_#t~mem14#1;call main_#t~mem15#1.base, main_#t~mem15#1.offset := read~$Pointer$(main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * (1 + main_~i~0#1), 4);call main_#t~mem16#1.base, main_#t~mem16#1.offset := read~$Pointer$(main_#t~mem15#1.base, main_#t~mem15#1.offset, 4);call main_#t~mem17#1 := read~int(main_#t~mem16#1.base, 4 + main_#t~mem16#1.offset, 4);main_~i~0#1 := main_#t~mem17#1 - 10;havoc main_#t~mem15#1.base, main_#t~mem15#1.offset;havoc main_#t~mem16#1.base, main_#t~mem16#1.offset;havoc main_#t~mem17#1; 295#L43-3 [2021-11-20 05:43:02,440 INFO L793 eck$LassoCheckResult]: Loop: 295#L43-3 call main_#t~mem18#1 := read~int(main_~pa~0#1.base, main_~pa~0#1.offset, 4); 303#L43-1 assume !!(main_~i~0#1 < main_#t~mem18#1);havoc main_#t~mem18#1;main_#t~pre19#1 := 1 + main_~i~0#1;main_~i~0#1 := 1 + main_~i~0#1;havoc main_#t~pre19#1; 295#L43-3 [2021-11-20 05:43:02,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:43:02,440 INFO L85 PathProgramCache]: Analyzing trace with hash 82232736, now seen corresponding path program 2 times [2021-11-20 05:43:02,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:43:02,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657428214] [2021-11-20 05:43:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:43:02,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:43:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:43:02,591 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:43:02,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:43:02,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657428214] [2021-11-20 05:43:02,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657428214] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:43:02,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391075407] [2021-11-20 05:43:02,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:43:02,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:43:02,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:43:02,594 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:43:02,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe6737-1367-45b6-a692-295beb33a1d8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 05:43:02,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:43:02,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:43:02,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:43:02,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:43:02,726 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:43:02,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:43:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:43:02,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391075407] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:43:02,821 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:43:02,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-20 05:43:02,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585533399] [2021-11-20 05:43:02,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:43:02,823 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 05:43:02,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:43:02,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1798, now seen corresponding path program 3 times [2021-11-20 05:43:02,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:43:02,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812669641] [2021-11-20 05:43:02,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:43:02,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:43:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:43:02,830 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:43:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:43:02,835 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:43:02,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:43:02,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 05:43:02,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:43:02,867 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. cyclomatic complexity: 3 Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 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) [2021-11-20 05:43:02,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:43:02,950 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-11-20 05:43:02,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 05:43:02,951 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 28 transitions. [2021-11-20 05:43:02,954 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-20 05:43:02,956 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 27 states and 28 transitions. [2021-11-20 05:43:02,956 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-11-20 05:43:02,956 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-11-20 05:43:02,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 28 transitions. [2021-11-20 05:43:02,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:43:02,957 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-11-20 05:43:02,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 28 transitions. [2021-11-20 05:43:02,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-20 05:43:02,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.037037037037037) internal successors, (28), 26 states have internal predecessors, (28), 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) [2021-11-20 05:43:02,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-11-20 05:43:02,962 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-11-20 05:43:02,962 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-11-20 05:43:02,962 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-20 05:43:02,962 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 28 transitions. [2021-11-20 05:43:02,964 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-20 05:43:02,964 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 05:43:02,964 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 05:43:02,966 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 1, 1, 1, 1, 1] [2021-11-20 05:43:02,966 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-20 05:43:02,966 INFO L791 eck$LassoCheckResult]: Stem: 426#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 427#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet10#1, main_#t~post9#1, main_~j~0#1, main_#t~mem11#1.base, main_#t~mem11#1.offset, main_#t~mem12#1.base, main_#t~mem12#1.offset, main_#t~mem13#1.base, main_#t~mem13#1.offset, main_#t~mem14#1, main_#t~mem15#1.base, main_#t~mem15#1.offset, main_#t~mem16#1.base, main_#t~mem16#1.offset, main_#t~mem17#1, main_#t~pre19#1, main_#t~mem18#1, main_#t~ret20#1, main_~#cont~0#1.base, main_~#cont~0#1.offset, main_~#dummy~0#1.base, main_~#dummy~0#1.offset, main_~#dummies~0#1.base, main_~#dummies~0#1.offset, main_~#a~0#1.base, main_~#a~0#1.offset, main_~i~0#1, main_~pa~0#1.base, main_~pa~0#1.offset;call main_~#cont~0#1.base, main_~#cont~0#1.offset := #Ultimate.allocOnStack(4);call main_~#dummy~0#1.base, main_~#dummy~0#1.offset := #Ultimate.allocOnStack(4);call main_~#dummies~0#1.base, main_~#dummies~0#1.offset := #Ultimate.allocOnStack(40);call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(40);havoc main_~i~0#1;havoc main_~pa~0#1.base, main_~pa~0#1.offset;main_~i~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;main_~j~0#1 := 0; 428#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 429#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 430#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 431#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 434#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 450#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 449#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 448#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 447#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 446#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 445#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 444#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 443#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 442#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 441#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 440#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 439#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 438#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 437#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 436#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 435#L29-3 assume !(main_~j~0#1 < 10); 432#L29-4 assume main_~i~0#1 > 0 && main_~i~0#1 < 9;call write~int(main_~i~0#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);call write~$Pointer$(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * (main_~i~0#1 - 1), main_~#dummy~0#1.base, main_~#dummy~0#1.offset, 4);call write~$Pointer$(main_~#dummy~0#1.base, main_~#dummy~0#1.offset, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * (1 + main_~i~0#1), 4);call write~$Pointer$(main_~#dummies~0#1.base, 4 + main_~#dummies~0#1.offset, main_~#cont~0#1.base, main_~#cont~0#1.offset, 4);call main_#t~mem11#1.base, main_#t~mem11#1.offset := read~$Pointer$(main_~#cont~0#1.base, main_~#cont~0#1.offset, 4);call main_#t~mem12#1.base, main_#t~mem12#1.offset := read~$Pointer$(main_#t~mem11#1.base, main_#t~mem11#1.offset + 4 * main_~i~0#1, 4);call main_#t~mem13#1.base, main_#t~mem13#1.offset := read~$Pointer$(main_#t~mem12#1.base, main_#t~mem12#1.offset, 4);main_~pa~0#1.base, main_~pa~0#1.offset := main_#t~mem13#1.base, 4 + main_#t~mem13#1.offset;havoc main_#t~mem11#1.base, main_#t~mem11#1.offset;havoc main_#t~mem12#1.base, main_#t~mem12#1.offset;havoc main_#t~mem13#1.base, main_#t~mem13#1.offset;call main_#t~mem14#1 := read~int(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4); 424#L41 assume main_#t~mem14#1 > 0;havoc main_#t~mem14#1;call main_#t~mem15#1.base, main_#t~mem15#1.offset := read~$Pointer$(main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * (1 + main_~i~0#1), 4);call main_#t~mem16#1.base, main_#t~mem16#1.offset := read~$Pointer$(main_#t~mem15#1.base, main_#t~mem15#1.offset, 4);call main_#t~mem17#1 := read~int(main_#t~mem16#1.base, 4 + main_#t~mem16#1.offset, 4);main_~i~0#1 := main_#t~mem17#1 - 10;havoc main_#t~mem15#1.base, main_#t~mem15#1.offset;havoc main_#t~mem16#1.base, main_#t~mem16#1.offset;havoc main_#t~mem17#1; 425#L43-3 [2021-11-20 05:43:02,966 INFO L793 eck$LassoCheckResult]: Loop: 425#L43-3 call main_#t~mem18#1 := read~int(main_~pa~0#1.base, main_~pa~0#1.offset, 4); 433#L43-1 assume !!(main_~i~0#1 < main_#t~mem18#1);havoc main_#t~mem18#1;main_#t~pre19#1 := 1 + main_~i~0#1;main_~i~0#1 := 1 + main_~i~0#1;havoc main_#t~pre19#1; 425#L43-3 [2021-11-20 05:43:02,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:43:02,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1520933524, now seen corresponding path program 3 times [2021-11-20 05:43:02,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:43:02,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134843235] [2021-11-20 05:43:02,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:43:02,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:43:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:43:03,242 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:43:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:43:03,567 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:43:03,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:43:03,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1798, now seen corresponding path program 4 times [2021-11-20 05:43:03,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:43:03,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320670948] [2021-11-20 05:43:03,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:43:03,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:43:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:43:03,572 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:43:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:43:03,575 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:43:03,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:43:03,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1328236761, now seen corresponding path program 1 times [2021-11-20 05:43:03,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:43:03,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522865384] [2021-11-20 05:43:03,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:43:03,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:43:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:43:03,733 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:43:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:43:03,947 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace