./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/ldv-regression/ex3_forlist.i --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_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/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_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/ldv-regression/ex3_forlist.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/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_4b4d4902-3fa2-43fd-833b-4736c396e715/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 33fdb29d081e8788960943f1182fbfb10ca7dcdfe7c31b22aaab16bda45fd1b8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:04:26,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:04:26,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:04:26,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:04:26,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:04:26,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:04:26,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:04:26,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:04:26,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:04:26,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:04:26,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:04:26,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:04:26,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:04:26,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:04:26,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:04:26,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:04:26,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:04:26,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:04:26,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:04:26,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:04:26,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:04:26,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:04:26,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:04:26,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:04:26,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:04:26,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:04:26,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:04:26,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:04:26,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:04:26,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:04:26,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:04:26,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:04:26,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:04:26,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:04:26,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:04:26,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:04:26,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:04:26,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:04:26,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:04:26,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:04:26,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:04:26,807 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-20 06:04:26,868 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:04:26,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:04:26,871 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:04:26,872 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:04:26,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:04:26,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:04:26,874 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:04:26,875 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-20 06:04:26,875 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-20 06:04:26,875 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-20 06:04:26,876 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-20 06:04:26,877 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-20 06:04:26,877 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-20 06:04:26,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:04:26,878 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:04:26,878 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:04:26,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:04:26,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:04:26,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:04:26,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-20 06:04:26,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-20 06:04:26,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-20 06:04:26,880 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:04:26,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:04:26,880 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-20 06:04:26,880 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:04:26,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-20 06:04:26,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:04:26,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:04:26,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:04:26,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:04:26,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:04:26,886 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-20 06:04:26,887 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_4b4d4902-3fa2-43fd-833b-4736c396e715/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33fdb29d081e8788960943f1182fbfb10ca7dcdfe7c31b22aaab16bda45fd1b8 [2021-11-20 06:04:27,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:04:27,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:04:27,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:04:27,279 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:04:27,289 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:04:27,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-regression/ex3_forlist.i [2021-11-20 06:04:27,355 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/data/2a7a5e0d4/b0f46cb7968d45a098ecb06876b96c64/FLAG315304ee2 [2021-11-20 06:04:27,869 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:04:27,870 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/sv-benchmarks/c/ldv-regression/ex3_forlist.i [2021-11-20 06:04:27,876 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/data/2a7a5e0d4/b0f46cb7968d45a098ecb06876b96c64/FLAG315304ee2 [2021-11-20 06:04:28,210 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/data/2a7a5e0d4/b0f46cb7968d45a098ecb06876b96c64 [2021-11-20 06:04:28,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:04:28,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:04:28,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:04:28,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:04:28,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:04:28,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:04:28" (1/1) ... [2021-11-20 06:04:28,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a793f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:28, skipping insertion in model container [2021-11-20 06:04:28,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:04:28" (1/1) ... [2021-11-20 06:04:28,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:04:28,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:04:28,415 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_4b4d4902-3fa2-43fd-833b-4736c396e715/sv-benchmarks/c/ldv-regression/ex3_forlist.i[293,306] [2021-11-20 06:04:28,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:04:28,473 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:04:28,488 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_4b4d4902-3fa2-43fd-833b-4736c396e715/sv-benchmarks/c/ldv-regression/ex3_forlist.i[293,306] [2021-11-20 06:04:28,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:04:28,533 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:04:28,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:28 WrapperNode [2021-11-20 06:04:28,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:04:28,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:04:28,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:04:28,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:04:28,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:28" (1/1) ... [2021-11-20 06:04:28,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:28" (1/1) ... [2021-11-20 06:04:28,612 INFO L137 Inliner]: procedures = 19, calls = 29, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 138 [2021-11-20 06:04:28,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:04:28,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:04:28,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:04:28,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:04:28,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:28" (1/1) ... [2021-11-20 06:04:28,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:28" (1/1) ... [2021-11-20 06:04:28,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:28" (1/1) ... [2021-11-20 06:04:28,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:28" (1/1) ... [2021-11-20 06:04:28,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:28" (1/1) ... [2021-11-20 06:04:28,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:28" (1/1) ... [2021-11-20 06:04:28,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:28" (1/1) ... [2021-11-20 06:04:28,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:04:28,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:04:28,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:04:28,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:04:28,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:28" (1/1) ... [2021-11-20 06:04:28,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:04:28,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:04:28,714 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:04:28,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-20 06:04:28,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:04:28,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 06:04:28,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:04:28,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:04:28,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:04:28,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:04:28,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:04:28,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:04:28,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:04:28,869 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:04:28,870 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:04:29,196 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:04:29,202 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:04:29,203 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-20 06:04:29,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:04:29 BoogieIcfgContainer [2021-11-20 06:04:29,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:04:29,206 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-20 06:04:29,206 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-20 06:04:29,209 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-20 06:04:29,210 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:04:29,210 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 06:04:28" (1/3) ... [2021-11-20 06:04:29,212 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@11dd137f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 06:04:29, skipping insertion in model container [2021-11-20 06:04:29,212 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:04:29,212 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:28" (2/3) ... [2021-11-20 06:04:29,213 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@11dd137f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 06:04:29, skipping insertion in model container [2021-11-20 06:04:29,213 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:04:29,213 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:04:29" (3/3) ... [2021-11-20 06:04:29,215 INFO L388 chiAutomizerObserver]: Analyzing ICFG ex3_forlist.i [2021-11-20 06:04:29,259 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-20 06:04:29,260 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-20 06:04:29,260 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-20 06:04:29,260 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-20 06:04:29,260 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-20 06:04:29,260 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-20 06:04:29,260 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-20 06:04:29,261 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-20 06:04:29,275 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 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 06:04:29,295 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 22 [2021-11-20 06:04:29,296 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:04:29,296 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:04:29,302 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:04:29,302 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-20 06:04:29,302 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-20 06:04:29,302 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 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 06:04:29,306 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 22 [2021-11-20 06:04:29,306 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:04:29,306 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:04:29,306 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:04:29,306 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-20 06:04:29,313 INFO L791 eck$LassoCheckResult]: Stem: 19#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3);~#pp~0.base, ~#pp~0.offset := 4, 0;call #Ultimate.allocInit(8, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, 4 + ~#pp~0.offset, 4);~#pstate~0.base, ~#pstate~0.offset := 5, 0;call #Ultimate.allocInit(8, 5);call write~init~int(0, ~#pstate~0.base, ~#pstate~0.offset, 4);call write~init~int(0, ~#pstate~0.base, 4 + ~#pstate~0.offset, 4);~counter~0 := 1; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset, main_#t~ret12#1.base, main_#t~ret12#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset;havoc main_~a~0#1.base, main_~a~0#1.offset;havoc main_~b~0#1.base, main_~b~0#1.offset;assume { :begin_inline_init } true;havoc init_#t~post4#1, init_~i~0#1;havoc init_~i~0#1;init_~i~0#1 := 0; 36#L19-3true [2021-11-20 06:04:29,314 INFO L793 eck$LassoCheckResult]: Loop: 36#L19-3true assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 3#L19-2true init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 36#L19-3true [2021-11-20 06:04:29,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:04:29,320 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-20 06:04:29,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:04:29,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504201537] [2021-11-20 06:04:29,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:04:29,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:04:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:04:29,456 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:04:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:04:29,515 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:04:29,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:04:29,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2021-11-20 06:04:29,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:04:29,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456452060] [2021-11-20 06:04:29,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:04:29,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:04:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:04:29,560 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:04:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:04:29,588 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:04:29,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:04:29,590 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-11-20 06:04:29,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:04:29,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548510701] [2021-11-20 06:04:29,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:04:29,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:04:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:04:29,642 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:04:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:04:29,697 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:04:30,382 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:04:30,383 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:04:30,383 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:04:30,383 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:04:30,383 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 06:04:30,383 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:04:30,384 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:04:30,384 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:04:30,384 INFO L133 ssoRankerPreferences]: Filename of dumped script: ex3_forlist.i_Iteration1_Lasso [2021-11-20 06:04:30,384 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:04:30,385 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:04:30,405 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 06:04:30,410 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 06:04:30,413 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 06:04:30,416 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 06:04:30,419 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 06:04:30,421 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 06:04:30,938 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 06:04:30,945 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 06:04:30,949 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 06:04:30,952 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 06:04:30,955 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 06:04:30,958 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 06:04:30,962 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 06:04:30,966 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 06:04:30,976 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 06:04:31,524 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:04:31,530 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 06:04:31,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:04:31,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:04:31,537 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:04:31,543 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 06:04:31,555 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:04:31,556 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:04:31,556 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:04:31,557 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:04:31,557 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:04:31,562 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:04:31,563 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:04:31,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-20 06:04:31,585 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:04:31,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:04:31,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:04:31,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:04:31,637 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:04:31,644 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 06:04:31,656 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:04:31,656 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:04:31,656 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:04:31,656 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:04:31,657 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:04:31,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-20 06:04:31,658 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:04:31,660 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:04:31,677 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:04:31,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:04:31,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:04:31,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:04:31,721 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:04:31,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-20 06:04:31,731 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 06:04:31,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:04:31,742 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:04:31,742 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:04:31,742 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:04:31,747 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:04:31,747 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:04:31,773 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:04:31,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:04:31,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:04:31,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:04:31,815 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:04:31,826 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 06:04:31,836 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:04:31,836 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:04:31,836 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:04:31,837 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:04:31,837 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:04:31,838 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:04:31,838 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:04:31,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-20 06:04:31,853 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:04:31,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:04:31,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:04:31,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:04:31,895 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:04:31,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-20 06:04:31,898 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 06:04:31,907 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:04:31,907 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:04:31,907 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:04:31,908 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:04:31,908 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:04:31,908 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:04:31,909 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:04:31,910 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:04:31,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-11-20 06:04:31,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:04:31,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:04:31,939 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:04:31,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-20 06:04:31,942 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 06:04:31,951 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:04:31,951 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:04:31,951 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:04:31,952 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:04:31,957 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:04:31,957 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:04:31,989 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:04:32,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-20 06:04:32,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:04:32,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:04:32,035 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:04:32,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-20 06:04:32,041 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 06:04:32,051 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:04:32,051 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:04:32,052 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:04:32,052 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:04:32,055 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:04:32,055 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:04:32,077 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:04:32,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:04:32,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:04:32,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:04:32,125 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:04:32,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-20 06:04:32,127 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 06:04:32,136 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:04:32,136 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:04:32,137 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:04:32,137 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:04:32,142 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:04:32,142 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:04:32,193 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:04:32,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:04:32,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:04:32,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:04:32,253 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:04:32,262 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 06:04:32,274 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:04:32,274 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:04:32,274 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:04:32,275 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:04:32,278 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:04:32,278 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:04:32,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-20 06:04:32,297 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:04:32,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-20 06:04:32,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:04:32,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:04:32,342 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:04:32,353 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 06:04:32,364 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:04:32,365 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:04:32,365 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:04:32,365 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:04:32,368 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:04:32,369 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:04:32,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-20 06:04:32,389 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:04:32,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:04:32,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:04:32,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:04:32,439 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:04:32,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-20 06:04:32,446 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 06:04:32,457 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:04:32,457 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:04:32,457 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:04:32,457 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:04:32,462 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:04:32,462 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:04:32,493 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:04:32,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-20 06:04:32,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:04:32,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:04:32,524 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:04:32,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-20 06:04:32,526 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 06:04:32,534 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:04:32,534 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:04:32,535 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:04:32,535 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:04:32,538 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:04:32,538 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:04:32,563 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:04:32,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-20 06:04:32,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:04:32,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:04:32,609 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:04:32,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-20 06:04:32,613 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 06:04:32,622 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:04:32,622 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:04:32,622 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:04:32,622 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:04:32,627 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:04:32,628 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:04:32,649 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:04:32,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-20 06:04:32,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:04:32,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:04:32,676 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:04:32,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-20 06:04:32,678 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 06:04:32,687 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:04:32,687 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:04:32,687 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:04:32,687 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:04:32,701 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:04:32,701 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:04:32,727 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:04:32,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-11-20 06:04:32,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:04:32,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:04:32,755 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:04:32,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-20 06:04:32,758 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 06:04:32,767 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:04:32,767 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:04:32,767 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:04:32,767 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:04:32,779 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:04:32,779 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:04:32,797 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:04:32,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-20 06:04:32,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:04:32,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:04:32,835 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:04:32,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-20 06:04:32,837 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 06:04:32,845 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:04:32,846 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:04:32,846 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:04:32,846 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:04:32,849 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:04:32,849 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:04:32,863 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:04:32,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-20 06:04:32,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:04:32,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:04:32,909 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:04:32,918 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 06:04:32,928 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:04:32,928 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:04:32,929 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:04:32,929 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:04:32,929 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:04:32,930 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:04:32,930 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:04:32,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-20 06:04:32,945 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:04:32,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-20 06:04:32,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:04:32,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:04:32,984 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:04:32,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-20 06:04:32,987 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 06:04:32,998 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:04:32,998 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:04:32,998 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:04:32,998 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:04:33,009 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:04:33,010 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:04:33,045 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 06:04:33,169 INFO L443 ModelExtractionUtils]: Simplification made 19 calls to the SMT solver. [2021-11-20 06:04:33,170 INFO L444 ModelExtractionUtils]: 1 out of 25 variables were initially zero. Simplification set additionally 21 variables to zero. [2021-11-20 06:04:33,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:04:33,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:04:33,177 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:04:33,191 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 06:04:33,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-20 06:04:33,218 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-11-20 06:04:33,219 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 06:04:33,219 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_init_~i~0#1) = -2*ULTIMATE.start_init_~i~0#1 + 3 Supporting invariants [] [2021-11-20 06:04:33,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-20 06:04:33,352 INFO L297 tatePredicateManager]: 23 out of 23 supporting invariants were superfluous and have been removed [2021-11-20 06:04:33,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:04:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:04:33,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:04:33,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:04:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:04:33,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:04:33,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:04:33,451 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 06:04:33,491 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 06:04:33,493 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 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 06:04:33,565 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 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 95 states and 138 transitions. Complement of second has 7 states. [2021-11-20 06:04:33,566 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 06:04:33,573 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 06:04:33,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2021-11-20 06:04:33,576 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 94 transitions. Stem has 2 letters. Loop has 2 letters. [2021-11-20 06:04:33,577 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:04:33,577 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 94 transitions. Stem has 4 letters. Loop has 2 letters. [2021-11-20 06:04:33,578 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:04:33,578 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 94 transitions. Stem has 2 letters. Loop has 4 letters. [2021-11-20 06:04:33,578 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:04:33,579 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 95 states and 138 transitions. [2021-11-20 06:04:33,587 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2021-11-20 06:04:33,592 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 95 states to 28 states and 37 transitions. [2021-11-20 06:04:33,594 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-11-20 06:04:33,594 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2021-11-20 06:04:33,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 37 transitions. [2021-11-20 06:04:33,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:04:33,596 INFO L681 BuchiCegarLoop]: Abstraction has 28 states and 37 transitions. [2021-11-20 06:04:33,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 37 transitions. [2021-11-20 06:04:33,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-20 06:04:33,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 27 states have internal predecessors, (37), 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 06:04:33,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2021-11-20 06:04:33,632 INFO L704 BuchiCegarLoop]: Abstraction has 28 states and 37 transitions. [2021-11-20 06:04:33,633 INFO L587 BuchiCegarLoop]: Abstraction has 28 states and 37 transitions. [2021-11-20 06:04:33,633 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-20 06:04:33,633 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 37 transitions. [2021-11-20 06:04:33,634 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2021-11-20 06:04:33,635 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:04:33,635 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:04:33,635 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:04:33,636 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 06:04:33,636 INFO L791 eck$LassoCheckResult]: Stem: 282#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3);~#pp~0.base, ~#pp~0.offset := 4, 0;call #Ultimate.allocInit(8, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, 4 + ~#pp~0.offset, 4);~#pstate~0.base, ~#pstate~0.offset := 5, 0;call #Ultimate.allocInit(8, 5);call write~init~int(0, ~#pstate~0.base, ~#pstate~0.offset, 4);call write~init~int(0, ~#pstate~0.base, 4 + ~#pstate~0.offset, 4);~counter~0 := 1; 270#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset, main_#t~ret12#1.base, main_#t~ret12#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset;havoc main_~a~0#1.base, main_~a~0#1.offset;havoc main_~b~0#1.base, main_~b~0#1.offset;assume { :begin_inline_init } true;havoc init_#t~post4#1, init_~i~0#1;havoc init_~i~0#1;init_~i~0#1 := 0; 271#L19-3 assume !(init_~i~0#1 < 2); 286#L17 assume { :end_inline_init } true;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 277#L49 main_#t~ret11#1.base, main_#t~ret11#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~a~0#1.base, main_~a~0#1.offset := main_#t~ret11#1.base, main_#t~ret11#1.offset;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 273#L49-1 main_#t~ret12#1.base, main_#t~ret12#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~b~0#1.base, main_~b~0#1.offset := main_#t~ret12#1.base, main_#t~ret12#1.offset;havoc main_#t~ret12#1.base, main_#t~ret12#1.offset; 266#L59 assume !((main_~a~0#1.base == 0 && main_~a~0#1.offset == 0) || (main_~b~0#1.base == 0 && main_~b~0#1.offset == 0));assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~a~0#1.base, main_~a~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 267#L27-3 [2021-11-20 06:04:33,637 INFO L793 eck$LassoCheckResult]: Loop: 267#L27-3 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 288#L28 assume !(f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0);havoc f_#t~mem6#1.base, f_#t~mem6#1.offset; 272#L27-2 f_#t~post5#1 := f_~i~1#1;f_~i~1#1 := 1 + f_#t~post5#1;havoc f_#t~post5#1; 267#L27-3 [2021-11-20 06:04:33,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:04:33,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1807951404, now seen corresponding path program 1 times [2021-11-20 06:04:33,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:04:33,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81227540] [2021-11-20 06:04:33,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:04:33,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:04:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:04:33,686 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 06:04:33,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:04:33,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81227540] [2021-11-20 06:04:33,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81227540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:04:33,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:04:33,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:04:33,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510354294] [2021-11-20 06:04:33,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:04:33,691 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:04:33,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:04:33,692 INFO L85 PathProgramCache]: Analyzing trace with hash 62722, now seen corresponding path program 1 times [2021-11-20 06:04:33,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:04:33,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548050347] [2021-11-20 06:04:33,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:04:33,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:04:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:04:33,700 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:04:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:04:33,711 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:04:33,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:04:33,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:04:33,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:04:33,786 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. cyclomatic complexity: 14 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 06:04:33,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:04:33,808 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2021-11-20 06:04:33,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:04:33,809 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 37 transitions. [2021-11-20 06:04:33,814 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2021-11-20 06:04:33,820 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 29 states and 37 transitions. [2021-11-20 06:04:33,820 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2021-11-20 06:04:33,820 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2021-11-20 06:04:33,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 37 transitions. [2021-11-20 06:04:33,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:04:33,821 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 37 transitions. [2021-11-20 06:04:33,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 37 transitions. [2021-11-20 06:04:33,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-11-20 06:04:33,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 27 states have internal predecessors, (36), 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 06:04:33,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2021-11-20 06:04:33,828 INFO L704 BuchiCegarLoop]: Abstraction has 28 states and 36 transitions. [2021-11-20 06:04:33,828 INFO L587 BuchiCegarLoop]: Abstraction has 28 states and 36 transitions. [2021-11-20 06:04:33,828 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-20 06:04:33,828 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 36 transitions. [2021-11-20 06:04:33,832 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2021-11-20 06:04:33,832 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:04:33,832 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:04:33,833 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:04:33,833 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 06:04:33,833 INFO L791 eck$LassoCheckResult]: Stem: 345#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(14, 2);call #Ultimate.allocInit(12, 3);~#pp~0.base, ~#pp~0.offset := 4, 0;call #Ultimate.allocInit(8, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, 4 + ~#pp~0.offset, 4);~#pstate~0.base, ~#pstate~0.offset := 5, 0;call #Ultimate.allocInit(8, 5);call write~init~int(0, ~#pstate~0.base, ~#pstate~0.offset, 4);call write~init~int(0, ~#pstate~0.base, 4 + ~#pstate~0.offset, 4);~counter~0 := 1; 333#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset, main_#t~ret12#1.base, main_#t~ret12#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset;havoc main_~a~0#1.base, main_~a~0#1.offset;havoc main_~b~0#1.base, main_~b~0#1.offset;assume { :begin_inline_init } true;havoc init_#t~post4#1, init_~i~0#1;havoc init_~i~0#1;init_~i~0#1 := 0; 334#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 324#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 325#L19-3 assume !(init_~i~0#1 < 2); 349#L17 assume { :end_inline_init } true;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 337#L49 main_#t~ret11#1.base, main_#t~ret11#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~a~0#1.base, main_~a~0#1.offset := main_#t~ret11#1.base, main_#t~ret11#1.offset;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 336#L49-1 main_#t~ret12#1.base, main_#t~ret12#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~b~0#1.base, main_~b~0#1.offset := main_#t~ret12#1.base, main_#t~ret12#1.offset;havoc main_#t~ret12#1.base, main_#t~ret12#1.offset; 326#L59 assume !((main_~a~0#1.base == 0 && main_~a~0#1.offset == 0) || (main_~b~0#1.base == 0 && main_~b~0#1.offset == 0));assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~a~0#1.base, main_~a~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 327#L27-3 [2021-11-20 06:04:33,833 INFO L793 eck$LassoCheckResult]: Loop: 327#L27-3 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 351#L28 assume !(f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0);havoc f_#t~mem6#1.base, f_#t~mem6#1.offset; 335#L27-2 f_#t~post5#1 := f_~i~1#1;f_~i~1#1 := 1 + f_#t~post5#1;havoc f_#t~post5#1; 327#L27-3 [2021-11-20 06:04:33,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:04:33,834 INFO L85 PathProgramCache]: Analyzing trace with hash -369325334, now seen corresponding path program 1 times [2021-11-20 06:04:33,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:04:33,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223733074] [2021-11-20 06:04:33,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:04:33,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:04:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:04:33,875 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 06:04:33,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:04:33,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223733074] [2021-11-20 06:04:33,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223733074] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:04:33,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506333296] [2021-11-20 06:04:33,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:04:33,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:04:33,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:04:33,877 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:04:33,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-20 06:04:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:04:33,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:04:33,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:04:33,971 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 06:04:33,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:04:34,006 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 06:04:34,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506333296] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:04:34,007 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:04:34,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-11-20 06:04:34,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342642535] [2021-11-20 06:04:34,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:04:34,008 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:04:34,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:04:34,008 INFO L85 PathProgramCache]: Analyzing trace with hash 62722, now seen corresponding path program 2 times [2021-11-20 06:04:34,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:04:34,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296601712] [2021-11-20 06:04:34,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:04:34,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:04:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:04:34,014 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:04:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:04:34,019 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:04:34,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:04:34,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:04:34,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:04:34,068 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. cyclomatic complexity: 13 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 06:04:34,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:04:34,089 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2021-11-20 06:04:34,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:04:34,090 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 38 transitions. [2021-11-20 06:04:34,091 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2021-11-20 06:04:34,092 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 30 states and 38 transitions. [2021-11-20 06:04:34,092 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2021-11-20 06:04:34,092 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2021-11-20 06:04:34,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 38 transitions. [2021-11-20 06:04:34,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:04:34,093 INFO L681 BuchiCegarLoop]: Abstraction has 30 states and 38 transitions. [2021-11-20 06:04:34,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 38 transitions. [2021-11-20 06:04:34,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-20 06:04:34,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 29 states have internal predecessors, (38), 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 06:04:34,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2021-11-20 06:04:34,096 INFO L704 BuchiCegarLoop]: Abstraction has 30 states and 38 transitions. [2021-11-20 06:04:34,096 INFO L587 BuchiCegarLoop]: Abstraction has 30 states and 38 transitions. [2021-11-20 06:04:34,096 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-20 06:04:34,096 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 38 transitions. [2021-11-20 06:04:34,096 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2021-11-20 06:04:34,097 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:04:34,097 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:04:34,097 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:04:34,097 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 06:04:34,097 INFO L791 eck$LassoCheckResult]: Stem: 459#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3);~#pp~0.base, ~#pp~0.offset := 4, 0;call #Ultimate.allocInit(8, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, 4 + ~#pp~0.offset, 4);~#pstate~0.base, ~#pstate~0.offset := 5, 0;call #Ultimate.allocInit(8, 5);call write~init~int(0, ~#pstate~0.base, ~#pstate~0.offset, 4);call write~init~int(0, ~#pstate~0.base, 4 + ~#pstate~0.offset, 4);~counter~0 := 1; 445#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset, main_#t~ret12#1.base, main_#t~ret12#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset;havoc main_~a~0#1.base, main_~a~0#1.offset;havoc main_~b~0#1.base, main_~b~0#1.offset;assume { :begin_inline_init } true;havoc init_#t~post4#1, init_~i~0#1;havoc init_~i~0#1;init_~i~0#1 := 0; 446#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 438#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 439#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 466#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 467#L19-3 assume !(init_~i~0#1 < 2); 463#L17 assume { :end_inline_init } true;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 451#L49 main_#t~ret11#1.base, main_#t~ret11#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~a~0#1.base, main_~a~0#1.offset := main_#t~ret11#1.base, main_#t~ret11#1.offset;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 450#L49-1 main_#t~ret12#1.base, main_#t~ret12#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~b~0#1.base, main_~b~0#1.offset := main_#t~ret12#1.base, main_#t~ret12#1.offset;havoc main_#t~ret12#1.base, main_#t~ret12#1.offset; 440#L59 assume !((main_~a~0#1.base == 0 && main_~a~0#1.offset == 0) || (main_~b~0#1.base == 0 && main_~b~0#1.offset == 0));assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~a~0#1.base, main_~a~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 441#L27-3 [2021-11-20 06:04:34,098 INFO L793 eck$LassoCheckResult]: Loop: 441#L27-3 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 465#L28 assume !(f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0);havoc f_#t~mem6#1.base, f_#t~mem6#1.offset; 449#L27-2 f_#t~post5#1 := f_~i~1#1;f_~i~1#1 := 1 + f_#t~post5#1;havoc f_#t~post5#1; 441#L27-3 [2021-11-20 06:04:34,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:04:34,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1083197400, now seen corresponding path program 2 times [2021-11-20 06:04:34,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:04:34,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654048044] [2021-11-20 06:04:34,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:04:34,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:04:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:04:34,125 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:04:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:04:34,158 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:04:34,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:04:34,159 INFO L85 PathProgramCache]: Analyzing trace with hash 62722, now seen corresponding path program 3 times [2021-11-20 06:04:34,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:04:34,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928080394] [2021-11-20 06:04:34,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:04:34,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:04:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:04:34,168 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:04:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:04:34,177 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:04:34,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:04:34,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1444415621, now seen corresponding path program 1 times [2021-11-20 06:04:34,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:04:34,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255477416] [2021-11-20 06:04:34,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:04:34,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:04:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:04:34,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-20 06:04:34,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:04:34,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:04:34,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255477416] [2021-11-20 06:04:34,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255477416] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:04:34,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768692200] [2021-11-20 06:04:34,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:04:34,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:04:34,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:04:34,545 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:04:34,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-20 06:04:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:04:34,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 06:04:34,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:04:34,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:04:34,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-20 06:04:34,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:04:34,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-20 06:04:34,813 INFO L354 Elim1Store]: treesize reduction 126, result has 13.1 percent of original size [2021-11-20 06:04:34,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 82 [2021-11-20 06:04:34,847 INFO L354 Elim1Store]: treesize reduction 126, result has 13.1 percent of original size [2021-11-20 06:04:34,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 46 [2021-11-20 06:04:35,155 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-20 06:04:35,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 39 [2021-11-20 06:04:35,162 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-20 06:04:35,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-11-20 06:04:35,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:04:35,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:04:47,410 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_init_~i~0#1_113| Int)) (or (< |v_ULTIMATE.start_init_~i~0#1_113| (+ |c_ULTIMATE.start_init_~i~0#1| 1)) (and (forall ((v_DerPreprocessor_4 Int)) (= (select (select (let ((.cse1 (* |v_ULTIMATE.start_init_~i~0#1_113| 4))) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_~#pp~0.base| (store (select |c_#memory_$Pointer$.base| |c_~#pp~0.base|) (+ .cse1 |c_~#pp~0.offset|) 0)))) (store .cse0 |c_~#pstate~0.base| (store (select .cse0 |c_~#pstate~0.base|) (+ .cse1 |c_~#pstate~0.offset|) v_DerPreprocessor_4)))) |c_~#pp~0.base|) |c_~#pp~0.offset|) 0)) (forall ((v_DerPreprocessor_3 Int)) (= (select (select (let ((.cse3 (* |v_ULTIMATE.start_init_~i~0#1_113| 4))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_~#pp~0.base| (store (select |c_#memory_$Pointer$.offset| |c_~#pp~0.base|) (+ .cse3 |c_~#pp~0.offset|) 0)))) (store .cse2 |c_~#pstate~0.base| (store (select .cse2 |c_~#pstate~0.base|) (+ .cse3 |c_~#pstate~0.offset|) v_DerPreprocessor_3)))) |c_~#pp~0.base|) |c_~#pp~0.offset|) 0))))) is different from false [2021-11-20 06:04:47,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11528 treesize of output 11400 [2021-11-20 06:04:49,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19259 treesize of output 19131 [2021-11-20 06:04:49,931 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 06:04:49,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:04:49,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-20 06:04:49,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887447954] [2021-11-20 06:04:49,932 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 06:04:49,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:04:49,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:04:49,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=264, Unknown=1, NotChecked=34, Total=380 [2021-11-20 06:04:49,983 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. cyclomatic complexity: 13 Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 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 06:04:50,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:04:50,202 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2021-11-20 06:04:50,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:04:50,210 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 35 transitions. [2021-11-20 06:04:50,210 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 13 [2021-11-20 06:04:50,211 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 29 states and 35 transitions. [2021-11-20 06:04:50,211 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-11-20 06:04:50,211 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-11-20 06:04:50,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 35 transitions. [2021-11-20 06:04:50,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:04:50,212 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-11-20 06:04:50,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 35 transitions. [2021-11-20 06:04:50,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-20 06:04:50,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 29 states have (on average 1.206896551724138) internal successors, (35), 28 states have internal predecessors, (35), 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 06:04:50,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-11-20 06:04:50,215 INFO L704 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-11-20 06:04:50,215 INFO L587 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-11-20 06:04:50,215 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-20 06:04:50,215 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 35 transitions. [2021-11-20 06:04:50,215 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 13 [2021-11-20 06:04:50,215 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:04:50,216 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:04:50,216 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:04:50,216 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 06:04:50,216 INFO L791 eck$LassoCheckResult]: Stem: 622#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(14, 2);call #Ultimate.allocInit(12, 3);~#pp~0.base, ~#pp~0.offset := 4, 0;call #Ultimate.allocInit(8, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, 4 + ~#pp~0.offset, 4);~#pstate~0.base, ~#pstate~0.offset := 5, 0;call #Ultimate.allocInit(8, 5);call write~init~int(0, ~#pstate~0.base, ~#pstate~0.offset, 4);call write~init~int(0, ~#pstate~0.base, 4 + ~#pstate~0.offset, 4);~counter~0 := 1; 611#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset, main_#t~ret12#1.base, main_#t~ret12#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset;havoc main_~a~0#1.base, main_~a~0#1.offset;havoc main_~b~0#1.base, main_~b~0#1.offset;assume { :begin_inline_init } true;havoc init_#t~post4#1, init_~i~0#1;havoc init_~i~0#1;init_~i~0#1 := 0; 612#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 602#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 603#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 629#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 630#L19-3 assume !(init_~i~0#1 < 2); 626#L17 assume { :end_inline_init } true;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 614#L49 main_#t~ret11#1.base, main_#t~ret11#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~a~0#1.base, main_~a~0#1.offset := main_#t~ret11#1.base, main_#t~ret11#1.offset;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 613#L49-1 main_#t~ret12#1.base, main_#t~ret12#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~b~0#1.base, main_~b~0#1.offset := main_#t~ret12#1.base, main_#t~ret12#1.offset;havoc main_#t~ret12#1.base, main_#t~ret12#1.offset; 604#L59 assume !((main_~a~0#1.base == 0 && main_~a~0#1.offset == 0) || (main_~b~0#1.base == 0 && main_~b~0#1.offset == 0));assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~a~0#1.base, main_~a~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 605#L27-3 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 628#L28 assume f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset;call write~$Pointer$(f_~pointer#1.base, f_~pointer#1.offset, ~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4);call write~int(1, ~#pstate~0.base, ~#pstate~0.offset + 4 * f_~i~1#1, 4); 624#L25 assume { :end_inline_f } true;assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~b~0#1.base, main_~b~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 623#L27-7 [2021-11-20 06:04:50,217 INFO L793 eck$LassoCheckResult]: Loop: 623#L27-7 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 615#L28-1 assume !(f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0);havoc f_#t~mem6#1.base, f_#t~mem6#1.offset; 617#L27-6 f_#t~post5#1 := f_~i~1#1;f_~i~1#1 := 1 + f_#t~post5#1;havoc f_#t~post5#1; 623#L27-7 [2021-11-20 06:04:50,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:04:50,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1444415679, now seen corresponding path program 1 times [2021-11-20 06:04:50,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:04:50,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316256931] [2021-11-20 06:04:50,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:04:50,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:04:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:04:50,244 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:04:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:04:50,277 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:04:50,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:04:50,278 INFO L85 PathProgramCache]: Analyzing trace with hash 81589, now seen corresponding path program 1 times [2021-11-20 06:04:50,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:04:50,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20277617] [2021-11-20 06:04:50,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:04:50,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:04:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:04:50,282 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:04:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:04:50,287 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:04:50,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:04:50,287 INFO L85 PathProgramCache]: Analyzing trace with hash 689897333, now seen corresponding path program 1 times [2021-11-20 06:04:50,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:04:50,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181993797] [2021-11-20 06:04:50,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:04:50,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:04:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:04:50,319 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:04:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:04:50,380 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:05:16,086 WARN L227 SmtUtils]: Spent 25.66s on a formula simplification. DAG size of input: 295 DAG size of output: 250 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-20 06:05:24,420 WARN L227 SmtUtils]: Spent 7.94s on a formula simplification that was a NOOP. DAG size: 190 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-20 06:05:24,424 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:05:24,424 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:05:24,424 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:05:24,425 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:05:24,425 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 06:05:24,425 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:24,425 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:05:24,425 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:05:24,425 INFO L133 ssoRankerPreferences]: Filename of dumped script: ex3_forlist.i_Iteration5_Lasso [2021-11-20 06:05:24,425 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:05:24,425 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:05:24,431 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 06:05:24,438 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 06:05:24,442 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 06:05:24,451 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 06:05:24,454 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 06:05:24,458 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 06:05:24,461 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 06:05:24,464 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 06:05:24,467 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 06:05:24,469 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 06:05:24,472 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 06:05:29,703 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 06:05:29,708 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 06:05:29,713 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 06:05:29,715 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 06:05:29,717 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 06:05:30,338 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:05:30,338 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 06:05:30,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:30,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:30,371 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:30,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-20 06:05:30,372 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 06:05:30,380 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:30,380 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:05:30,380 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:30,380 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:30,380 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:30,381 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:05:30,381 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:05:30,385 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:30,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:30,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:30,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:30,406 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:30,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-20 06:05:30,408 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 06:05:30,416 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:30,416 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:30,416 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:30,416 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:30,418 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:30,419 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:30,441 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:30,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:30,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:30,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:30,482 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:30,485 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 06:05:30,495 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:30,495 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:30,496 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:30,496 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:30,499 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:30,499 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:30,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-20 06:05:30,513 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:30,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:30,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:30,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:30,539 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:30,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-11-20 06:05:30,541 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 06:05:30,548 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:30,548 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:05:30,548 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:30,548 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:30,549 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:30,549 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:05:30,549 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:05:30,550 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:30,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:30,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:30,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:30,574 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:30,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-11-20 06:05:30,575 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 06:05:30,582 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:30,582 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:30,583 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:30,583 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:30,584 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:30,584 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:30,598 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:30,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:30,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:30,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:30,622 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:30,630 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 06:05:30,637 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:30,637 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:30,637 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:30,637 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:30,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-11-20 06:05:30,639 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:30,639 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:30,645 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:30,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:30,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:30,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:30,666 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:30,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-11-20 06:05:30,669 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 06:05:30,676 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:30,676 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:05:30,676 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:30,676 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:30,676 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:30,677 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:05:30,677 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:05:30,678 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:30,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:30,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:30,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:30,699 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:30,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-11-20 06:05:30,702 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 06:05:30,709 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:30,709 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:05:30,709 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:30,710 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:30,710 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:30,710 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:05:30,710 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:05:30,711 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:30,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:30,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:30,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:30,733 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:30,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-11-20 06:05:30,734 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 06:05:30,743 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:30,743 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:05:30,744 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:30,744 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:30,744 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:30,744 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:05:30,744 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:05:30,745 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:30,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:30,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:30,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:30,769 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:30,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-11-20 06:05:30,770 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 06:05:30,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:30,777 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:05:30,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:30,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:30,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:30,778 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:05:30,778 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:05:30,779 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:30,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:30,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:30,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:30,801 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:30,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-11-20 06:05:30,803 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 06:05:30,811 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:30,811 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:30,811 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:30,811 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:30,812 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:30,813 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:30,815 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:30,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:30,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:30,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:30,838 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:30,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-11-20 06:05:30,839 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 06:05:30,846 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:30,846 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:30,846 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:30,846 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:30,849 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:30,849 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:30,851 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:30,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-11-20 06:05:30,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:30,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:30,875 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:30,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-11-20 06:05:30,876 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 06:05:30,884 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:30,884 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:30,884 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:30,884 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:30,886 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:30,886 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:30,888 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:30,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:30,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:30,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:30,910 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:30,912 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 06:05:30,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-11-20 06:05:30,922 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:30,923 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:30,923 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:30,923 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:30,926 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:30,926 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:30,942 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:30,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:30,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:30,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:30,964 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:30,970 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 06:05:30,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-11-20 06:05:30,978 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:30,978 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:30,978 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:30,978 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:30,980 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:30,980 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:30,982 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:31,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:31,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:31,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:31,003 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:31,004 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 06:05:31,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-11-20 06:05:31,012 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:31,012 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:31,012 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:31,012 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:31,014 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:31,014 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:31,017 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:31,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:31,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:31,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:31,037 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:31,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-11-20 06:05:31,039 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 06:05:31,046 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:31,046 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:31,047 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:31,047 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:31,048 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:31,048 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:31,050 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:31,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:31,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:31,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:31,072 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:31,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-11-20 06:05:31,074 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 06:05:31,082 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:31,082 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:31,082 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:31,082 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:31,084 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:31,084 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:31,087 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:31,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:31,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:31,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:31,107 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:31,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-11-20 06:05:31,109 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 06:05:31,116 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:31,116 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:31,116 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:31,116 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:31,118 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:31,118 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:31,149 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:31,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:31,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:31,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:31,182 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:31,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-11-20 06:05:31,184 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 06:05:31,191 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:31,191 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:31,191 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:31,191 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:31,195 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:31,195 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:31,207 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:31,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:31,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:31,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:31,242 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:31,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-11-20 06:05:31,244 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 06:05:31,251 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:31,251 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:31,251 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:31,251 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:31,254 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:31,254 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:31,265 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:31,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:31,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:31,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:31,305 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:31,313 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 06:05:31,322 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:31,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:31,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:31,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:31,326 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:31,326 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:31,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-11-20 06:05:31,341 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:31,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:31,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:31,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:31,376 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:31,377 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 06:05:31,386 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:31,387 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:31,387 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:31,387 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:31,389 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:31,389 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:31,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-11-20 06:05:31,401 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:31,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:31,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:31,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:31,436 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:31,441 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 06:05:31,451 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:31,451 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:31,451 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:31,451 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:31,453 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:31,453 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:31,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-11-20 06:05:31,465 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:31,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:31,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:31,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:31,500 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:31,503 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 06:05:31,513 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:31,513 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:31,513 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2021-11-20 06:05:31,513 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:31,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-11-20 06:05:31,570 INFO L401 nArgumentSynthesizer]: We have 48 Motzkin's Theorem applications. [2021-11-20 06:05:31,571 INFO L402 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2021-11-20 06:05:31,684 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:31,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-11-20 06:05:31,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:31,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:31,706 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:31,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-11-20 06:05:31,707 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 06:05:31,714 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:31,714 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:31,714 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:31,714 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:31,716 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:31,716 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:31,729 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:31,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:31,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:31,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:31,749 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:31,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-11-20 06:05:31,751 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 06:05:31,758 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:31,758 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:31,758 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:31,758 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:31,759 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:31,759 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:31,763 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:31,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:31,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:31,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:31,782 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:31,783 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 06:05:31,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-11-20 06:05:31,790 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:31,790 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:31,790 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:31,791 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:31,792 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:31,792 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:31,795 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:31,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:31,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:31,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:31,815 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:31,817 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 06:05:31,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-11-20 06:05:31,824 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:31,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:31,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:31,825 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:31,826 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:31,826 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:31,830 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:31,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:31,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:31,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:31,851 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:31,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-11-20 06:05:31,861 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 06:05:31,868 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:31,869 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:31,869 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:31,869 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:31,871 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:31,871 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:31,879 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:31,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:31,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:31,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:31,900 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:31,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-11-20 06:05:31,901 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 06:05:31,909 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:31,909 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:31,909 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:31,909 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:31,910 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:31,910 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:31,914 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:31,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2021-11-20 06:05:31,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:31,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:31,934 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:31,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-11-20 06:05:31,935 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 06:05:31,942 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:31,942 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:31,942 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:31,943 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:31,949 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:31,949 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:31,952 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:05:31,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2021-11-20 06:05:31,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:31,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:31,971 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:31,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-11-20 06:05:31,973 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 06:05:31,980 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:05:31,980 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:05:31,980 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:05:31,980 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:05:31,985 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:05:31,985 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:05:31,995 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 06:05:32,046 INFO L443 ModelExtractionUtils]: Simplification made 25 calls to the SMT solver. [2021-11-20 06:05:32,047 INFO L444 ModelExtractionUtils]: 0 out of 22 variables were initially zero. Simplification set additionally 19 variables to zero. [2021-11-20 06:05:32,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:05:32,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:32,054 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:32,055 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 06:05:32,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-11-20 06:05:32,069 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-11-20 06:05:32,069 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 06:05:32,069 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ~#pp~0.base)_2, ULTIMATE.start_f_~i~1#1) = 1*v_rep(select #length ~#pp~0.base)_2 - 4*ULTIMATE.start_f_~i~1#1 Supporting invariants [] [2021-11-20 06:05:32,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-11-20 06:05:32,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:32,293 INFO L297 tatePredicateManager]: 55 out of 55 supporting invariants were superfluous and have been removed [2021-11-20 06:05:32,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:32,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:05:32,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:05:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:32,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:05:32,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:05:32,418 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 06:05:32,419 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 06:05:32,419 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 10 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 06:05:32,488 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 10. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 68 states and 88 transitions. Complement of second has 6 states. [2021-11-20 06:05:32,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-20 06:05:32,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 06:05:32,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2021-11-20 06:05:32,490 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 47 transitions. Stem has 14 letters. Loop has 3 letters. [2021-11-20 06:05:32,491 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:05:32,491 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 47 transitions. Stem has 17 letters. Loop has 3 letters. [2021-11-20 06:05:32,491 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:05:32,491 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 47 transitions. Stem has 14 letters. Loop has 6 letters. [2021-11-20 06:05:32,492 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:05:32,492 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2021-11-20 06:05:32,493 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 20 [2021-11-20 06:05:32,494 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 43 states and 54 transitions. [2021-11-20 06:05:32,494 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2021-11-20 06:05:32,494 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-11-20 06:05:32,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 54 transitions. [2021-11-20 06:05:32,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:05:32,495 INFO L681 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2021-11-20 06:05:32,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 54 transitions. [2021-11-20 06:05:32,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31. [2021-11-20 06:05:32,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 30 states have internal predecessors, (39), 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 06:05:32,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2021-11-20 06:05:32,498 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 39 transitions. [2021-11-20 06:05:32,498 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 39 transitions. [2021-11-20 06:05:32,498 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-20 06:05:32,499 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 39 transitions. [2021-11-20 06:05:32,499 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-20 06:05:32,499 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:05:32,499 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:05:32,500 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:05:32,500 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 06:05:32,500 INFO L791 eck$LassoCheckResult]: Stem: 1014#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(14, 2);call #Ultimate.allocInit(12, 3);~#pp~0.base, ~#pp~0.offset := 4, 0;call #Ultimate.allocInit(8, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, 4 + ~#pp~0.offset, 4);~#pstate~0.base, ~#pstate~0.offset := 5, 0;call #Ultimate.allocInit(8, 5);call write~init~int(0, ~#pstate~0.base, ~#pstate~0.offset, 4);call write~init~int(0, ~#pstate~0.base, 4 + ~#pstate~0.offset, 4);~counter~0 := 1; 1000#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset, main_#t~ret12#1.base, main_#t~ret12#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset;havoc main_~a~0#1.base, main_~a~0#1.offset;havoc main_~b~0#1.base, main_~b~0#1.offset;assume { :begin_inline_init } true;havoc init_#t~post4#1, init_~i~0#1;havoc init_~i~0#1;init_~i~0#1 := 0; 1001#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 993#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 994#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 1022#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 1023#L19-3 assume !(init_~i~0#1 < 2); 1019#L17 assume { :end_inline_init } true;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 1005#L49 main_#t~ret11#1.base, main_#t~ret11#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~a~0#1.base, main_~a~0#1.offset := main_#t~ret11#1.base, main_#t~ret11#1.offset;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 1004#L49-1 main_#t~ret12#1.base, main_#t~ret12#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~b~0#1.base, main_~b~0#1.offset := main_#t~ret12#1.base, main_#t~ret12#1.offset;havoc main_#t~ret12#1.base, main_#t~ret12#1.offset; 995#L59 assume !((main_~a~0#1.base == 0 && main_~a~0#1.offset == 0) || (main_~b~0#1.base == 0 && main_~b~0#1.offset == 0));assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~a~0#1.base, main_~a~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 996#L27-3 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 1021#L28 assume f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset;call write~$Pointer$(f_~pointer#1.base, f_~pointer#1.offset, ~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4);call write~int(1, ~#pstate~0.base, ~#pstate~0.offset + 4 * f_~i~1#1, 4); 1016#L25 assume { :end_inline_f } true;assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~b~0#1.base, main_~b~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 1017#L27-7 assume !(f_~i~1#1 < 2); 1007#L25-1 assume { :end_inline_f } true;assume { :begin_inline_g } true;g_#in~pointer#1.base, g_#in~pointer#1.offset := main_~a~0#1.base, main_~a~0#1.offset;havoc g_#t~mem8#1.base, g_#t~mem8#1.offset, g_#t~mem9#1, g_#t~post7#1, g_~pointer#1.base, g_~pointer#1.offset, g_~i~2#1;g_~pointer#1.base, g_~pointer#1.offset := g_#in~pointer#1.base, g_#in~pointer#1.offset;havoc g_~i~2#1;g_~i~2#1 := 0; 997#L38-3 [2021-11-20 06:05:32,501 INFO L793 eck$LassoCheckResult]: Loop: 997#L38-3 assume !!(g_~i~2#1 < 2);call g_#t~mem8#1.base, g_#t~mem8#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * g_~i~2#1, 4); 999#L39 assume !(g_#t~mem8#1.base == g_~pointer#1.base && g_#t~mem8#1.offset == g_~pointer#1.offset);havoc g_#t~mem8#1.base, g_#t~mem8#1.offset; 1012#L38-2 g_#t~post7#1 := g_~i~2#1;g_~i~2#1 := 1 + g_#t~post7#1;havoc g_#t~post7#1; 997#L38-3 [2021-11-20 06:05:32,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:32,501 INFO L85 PathProgramCache]: Analyzing trace with hash -809029298, now seen corresponding path program 1 times [2021-11-20 06:05:32,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:32,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444151280] [2021-11-20 06:05:32,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:32,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:32,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:05:32,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:05:32,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444151280] [2021-11-20 06:05:32,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444151280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:05:32,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:05:32,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:05:32,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137586096] [2021-11-20 06:05:32,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:05:32,532 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:05:32,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:32,532 INFO L85 PathProgramCache]: Analyzing trace with hash 100808, now seen corresponding path program 1 times [2021-11-20 06:05:32,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:32,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668354326] [2021-11-20 06:05:32,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:32,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:05:32,536 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:05:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:05:32,540 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:05:32,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:05:32,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:05:32,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:05:32,587 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. cyclomatic complexity: 12 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 06:05:32,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:05:32,609 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2021-11-20 06:05:32,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:05:32,611 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 56 transitions. [2021-11-20 06:05:32,612 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 20 [2021-11-20 06:05:32,613 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 46 states and 56 transitions. [2021-11-20 06:05:32,613 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2021-11-20 06:05:32,613 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-11-20 06:05:32,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 56 transitions. [2021-11-20 06:05:32,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:05:32,613 INFO L681 BuchiCegarLoop]: Abstraction has 46 states and 56 transitions. [2021-11-20 06:05:32,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 56 transitions. [2021-11-20 06:05:32,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2021-11-20 06:05:32,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 30 states have internal predecessors, (38), 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 06:05:32,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2021-11-20 06:05:32,617 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-11-20 06:05:32,617 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-11-20 06:05:32,617 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-20 06:05:32,617 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 38 transitions. [2021-11-20 06:05:32,617 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-20 06:05:32,618 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:05:32,618 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:05:32,618 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:05:32,618 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 06:05:32,619 INFO L791 eck$LassoCheckResult]: Stem: 1097#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3);~#pp~0.base, ~#pp~0.offset := 4, 0;call #Ultimate.allocInit(8, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, 4 + ~#pp~0.offset, 4);~#pstate~0.base, ~#pstate~0.offset := 5, 0;call #Ultimate.allocInit(8, 5);call write~init~int(0, ~#pstate~0.base, ~#pstate~0.offset, 4);call write~init~int(0, ~#pstate~0.base, 4 + ~#pstate~0.offset, 4);~counter~0 := 1; 1083#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset, main_#t~ret12#1.base, main_#t~ret12#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset;havoc main_~a~0#1.base, main_~a~0#1.offset;havoc main_~b~0#1.base, main_~b~0#1.offset;assume { :begin_inline_init } true;havoc init_#t~post4#1, init_~i~0#1;havoc init_~i~0#1;init_~i~0#1 := 0; 1084#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 1076#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 1077#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 1105#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 1106#L19-3 assume !(init_~i~0#1 < 2); 1102#L17 assume { :end_inline_init } true;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 1088#L49 main_#t~ret11#1.base, main_#t~ret11#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~a~0#1.base, main_~a~0#1.offset := main_#t~ret11#1.base, main_#t~ret11#1.offset;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 1087#L49-1 main_#t~ret12#1.base, main_#t~ret12#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~b~0#1.base, main_~b~0#1.offset := main_#t~ret12#1.base, main_#t~ret12#1.offset;havoc main_#t~ret12#1.base, main_#t~ret12#1.offset; 1078#L59 assume !((main_~a~0#1.base == 0 && main_~a~0#1.offset == 0) || (main_~b~0#1.base == 0 && main_~b~0#1.offset == 0));assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~a~0#1.base, main_~a~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 1079#L27-3 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 1104#L28 assume f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset;call write~$Pointer$(f_~pointer#1.base, f_~pointer#1.offset, ~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4);call write~int(1, ~#pstate~0.base, ~#pstate~0.offset + 4 * f_~i~1#1, 4); 1099#L25 assume { :end_inline_f } true;assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~b~0#1.base, main_~b~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 1100#L27-7 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 1089#L28-1 assume f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset;call write~$Pointer$(f_~pointer#1.base, f_~pointer#1.offset, ~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4);call write~int(1, ~#pstate~0.base, ~#pstate~0.offset + 4 * f_~i~1#1, 4); 1090#L25-1 assume { :end_inline_f } true;assume { :begin_inline_g } true;g_#in~pointer#1.base, g_#in~pointer#1.offset := main_~a~0#1.base, main_~a~0#1.offset;havoc g_#t~mem8#1.base, g_#t~mem8#1.offset, g_#t~mem9#1, g_#t~post7#1, g_~pointer#1.base, g_~pointer#1.offset, g_~i~2#1;g_~pointer#1.base, g_~pointer#1.offset := g_#in~pointer#1.base, g_#in~pointer#1.offset;havoc g_~i~2#1;g_~i~2#1 := 0; 1080#L38-3 [2021-11-20 06:05:32,619 INFO L793 eck$LassoCheckResult]: Loop: 1080#L38-3 assume !!(g_~i~2#1 < 2);call g_#t~mem8#1.base, g_#t~mem8#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * g_~i~2#1, 4); 1082#L39 assume !(g_#t~mem8#1.base == g_~pointer#1.base && g_#t~mem8#1.offset == g_~pointer#1.offset);havoc g_#t~mem8#1.base, g_#t~mem8#1.offset; 1095#L38-2 g_#t~post7#1 := g_~i~2#1;g_~i~2#1 := 1 + g_#t~post7#1;havoc g_#t~post7#1; 1080#L38-3 [2021-11-20 06:05:32,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:32,619 INFO L85 PathProgramCache]: Analyzing trace with hash 689897275, now seen corresponding path program 1 times [2021-11-20 06:05:32,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:32,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660944651] [2021-11-20 06:05:32,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:32,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:32,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:05:32,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:05:32,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660944651] [2021-11-20 06:05:32,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660944651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:05:32,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:05:32,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 06:05:32,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454690272] [2021-11-20 06:05:32,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:05:32,851 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:05:32,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:32,852 INFO L85 PathProgramCache]: Analyzing trace with hash 100808, now seen corresponding path program 2 times [2021-11-20 06:05:32,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:32,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152964390] [2021-11-20 06:05:32,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:32,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:05:32,857 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:05:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:05:32,861 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:05:32,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:05:32,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:05:32,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:05:32,919 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. cyclomatic complexity: 11 Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 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 06:05:33,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:05:33,248 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-11-20 06:05:33,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:05:33,249 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 55 transitions. [2021-11-20 06:05:33,250 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 20 [2021-11-20 06:05:33,251 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 45 states and 54 transitions. [2021-11-20 06:05:33,251 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-11-20 06:05:33,251 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-11-20 06:05:33,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 54 transitions. [2021-11-20 06:05:33,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:05:33,252 INFO L681 BuchiCegarLoop]: Abstraction has 45 states and 54 transitions. [2021-11-20 06:05:33,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 54 transitions. [2021-11-20 06:05:33,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2021-11-20 06:05:33,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 30 states have internal predecessors, (37), 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 06:05:33,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2021-11-20 06:05:33,255 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-11-20 06:05:33,255 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-11-20 06:05:33,257 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-11-20 06:05:33,257 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 37 transitions. [2021-11-20 06:05:33,258 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-20 06:05:33,258 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:05:33,258 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:05:33,259 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:05:33,259 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 06:05:33,261 INFO L791 eck$LassoCheckResult]: Stem: 1196#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(14, 2);call #Ultimate.allocInit(12, 3);~#pp~0.base, ~#pp~0.offset := 4, 0;call #Ultimate.allocInit(8, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, 4 + ~#pp~0.offset, 4);~#pstate~0.base, ~#pstate~0.offset := 5, 0;call #Ultimate.allocInit(8, 5);call write~init~int(0, ~#pstate~0.base, ~#pstate~0.offset, 4);call write~init~int(0, ~#pstate~0.base, 4 + ~#pstate~0.offset, 4);~counter~0 := 1; 1184#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset, main_#t~ret12#1.base, main_#t~ret12#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset;havoc main_~a~0#1.base, main_~a~0#1.offset;havoc main_~b~0#1.base, main_~b~0#1.offset;assume { :begin_inline_init } true;havoc init_#t~post4#1, init_~i~0#1;havoc init_~i~0#1;init_~i~0#1 := 0; 1185#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 1175#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 1176#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 1204#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 1205#L19-3 assume !(init_~i~0#1 < 2); 1201#L17 assume { :end_inline_init } true;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 1187#L49 main_#t~ret11#1.base, main_#t~ret11#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~a~0#1.base, main_~a~0#1.offset := main_#t~ret11#1.base, main_#t~ret11#1.offset;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 1186#L49-1 main_#t~ret12#1.base, main_#t~ret12#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~b~0#1.base, main_~b~0#1.offset := main_#t~ret12#1.base, main_#t~ret12#1.offset;havoc main_#t~ret12#1.base, main_#t~ret12#1.offset; 1180#L59 assume !((main_~a~0#1.base == 0 && main_~a~0#1.offset == 0) || (main_~b~0#1.base == 0 && main_~b~0#1.offset == 0));assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~a~0#1.base, main_~a~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 1181#L27-3 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 1203#L28 assume f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset;call write~$Pointer$(f_~pointer#1.base, f_~pointer#1.offset, ~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4);call write~int(1, ~#pstate~0.base, ~#pstate~0.offset + 4 * f_~i~1#1, 4); 1198#L25 assume { :end_inline_f } true;assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~b~0#1.base, main_~b~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 1199#L27-7 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 1190#L28-1 assume !(f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0);havoc f_#t~mem6#1.base, f_#t~mem6#1.offset; 1191#L27-6 f_#t~post5#1 := f_~i~1#1;f_~i~1#1 := 1 + f_#t~post5#1;havoc f_#t~post5#1; 1197#L27-7 assume !(f_~i~1#1 < 2); 1189#L25-1 assume { :end_inline_f } true;assume { :begin_inline_g } true;g_#in~pointer#1.base, g_#in~pointer#1.offset := main_~a~0#1.base, main_~a~0#1.offset;havoc g_#t~mem8#1.base, g_#t~mem8#1.offset, g_#t~mem9#1, g_#t~post7#1, g_~pointer#1.base, g_~pointer#1.offset, g_~i~2#1;g_~pointer#1.base, g_~pointer#1.offset := g_#in~pointer#1.base, g_#in~pointer#1.offset;havoc g_~i~2#1;g_~i~2#1 := 0; 1177#L38-3 [2021-11-20 06:05:33,261 INFO L793 eck$LassoCheckResult]: Loop: 1177#L38-3 assume !!(g_~i~2#1 < 2);call g_#t~mem8#1.base, g_#t~mem8#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * g_~i~2#1, 4); 1179#L39 assume !(g_#t~mem8#1.base == g_~pointer#1.base && g_#t~mem8#1.offset == g_~pointer#1.offset);havoc g_#t~mem8#1.base, g_#t~mem8#1.offset; 1194#L38-2 g_#t~post7#1 := g_~i~2#1;g_~i~2#1 := 1 + g_#t~post7#1;havoc g_#t~post7#1; 1177#L38-3 [2021-11-20 06:05:33,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:33,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1566375042, now seen corresponding path program 1 times [2021-11-20 06:05:33,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:33,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70568134] [2021-11-20 06:05:33,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:33,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:33,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:05:33,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:05:33,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70568134] [2021-11-20 06:05:33,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70568134] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:05:33,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875959589] [2021-11-20 06:05:33,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:33,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:05:33,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:33,344 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:05:33,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-11-20 06:05:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:33,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:05:33,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:05:33,467 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:05:33,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:05:33,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:05:33,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875959589] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:05:33,522 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:05:33,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-11-20 06:05:33,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659815719] [2021-11-20 06:05:33,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:05:33,523 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:05:33,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:33,523 INFO L85 PathProgramCache]: Analyzing trace with hash 100808, now seen corresponding path program 3 times [2021-11-20 06:05:33,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:33,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631411735] [2021-11-20 06:05:33,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:33,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:05:33,547 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:05:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:05:33,552 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:05:33,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:05:33,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:05:33,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:05:33,601 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. cyclomatic complexity: 10 Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 06:05:33,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:05:33,633 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2021-11-20 06:05:33,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:05:33,635 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 56 transitions. [2021-11-20 06:05:33,636 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 20 [2021-11-20 06:05:33,637 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 46 states and 56 transitions. [2021-11-20 06:05:33,637 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-11-20 06:05:33,637 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-11-20 06:05:33,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 56 transitions. [2021-11-20 06:05:33,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:05:33,638 INFO L681 BuchiCegarLoop]: Abstraction has 46 states and 56 transitions. [2021-11-20 06:05:33,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 56 transitions. [2021-11-20 06:05:33,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2021-11-20 06:05:33,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 33 states have internal predecessors, (41), 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 06:05:33,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2021-11-20 06:05:33,641 INFO L704 BuchiCegarLoop]: Abstraction has 34 states and 41 transitions. [2021-11-20 06:05:33,642 INFO L587 BuchiCegarLoop]: Abstraction has 34 states and 41 transitions. [2021-11-20 06:05:33,642 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-11-20 06:05:33,642 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 41 transitions. [2021-11-20 06:05:33,643 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-20 06:05:33,643 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:05:33,643 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:05:33,644 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:05:33,644 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 06:05:33,644 INFO L791 eck$LassoCheckResult]: Stem: 1389#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3);~#pp~0.base, ~#pp~0.offset := 4, 0;call #Ultimate.allocInit(8, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, 4 + ~#pp~0.offset, 4);~#pstate~0.base, ~#pstate~0.offset := 5, 0;call #Ultimate.allocInit(8, 5);call write~init~int(0, ~#pstate~0.base, ~#pstate~0.offset, 4);call write~init~int(0, ~#pstate~0.base, 4 + ~#pstate~0.offset, 4);~counter~0 := 1; 1377#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset, main_#t~ret12#1.base, main_#t~ret12#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset;havoc main_~a~0#1.base, main_~a~0#1.offset;havoc main_~b~0#1.base, main_~b~0#1.offset;assume { :begin_inline_init } true;havoc init_#t~post4#1, init_~i~0#1;havoc init_~i~0#1;init_~i~0#1 := 0; 1378#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 1368#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 1369#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 1398#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 1399#L19-3 assume !(init_~i~0#1 < 2); 1394#L17 assume { :end_inline_init } true;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 1380#L49 main_#t~ret11#1.base, main_#t~ret11#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~a~0#1.base, main_~a~0#1.offset := main_#t~ret11#1.base, main_#t~ret11#1.offset;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 1379#L49-1 main_#t~ret12#1.base, main_#t~ret12#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~b~0#1.base, main_~b~0#1.offset := main_#t~ret12#1.base, main_#t~ret12#1.offset;havoc main_#t~ret12#1.base, main_#t~ret12#1.offset; 1373#L59 assume !((main_~a~0#1.base == 0 && main_~a~0#1.offset == 0) || (main_~b~0#1.base == 0 && main_~b~0#1.offset == 0));assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~a~0#1.base, main_~a~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 1374#L27-3 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 1396#L28 assume f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset;call write~$Pointer$(f_~pointer#1.base, f_~pointer#1.offset, ~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4);call write~int(1, ~#pstate~0.base, ~#pstate~0.offset + 4 * f_~i~1#1, 4); 1391#L25 assume { :end_inline_f } true;assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~b~0#1.base, main_~b~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 1392#L27-7 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 1383#L28-1 assume !(f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0);havoc f_#t~mem6#1.base, f_#t~mem6#1.offset; 1384#L27-6 f_#t~post5#1 := f_~i~1#1;f_~i~1#1 := 1 + f_#t~post5#1;havoc f_#t~post5#1; 1390#L27-7 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 1381#L28-1 assume f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset;call write~$Pointer$(f_~pointer#1.base, f_~pointer#1.offset, ~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4);call write~int(1, ~#pstate~0.base, ~#pstate~0.offset + 4 * f_~i~1#1, 4); 1382#L25-1 assume { :end_inline_f } true;assume { :begin_inline_g } true;g_#in~pointer#1.base, g_#in~pointer#1.offset := main_~a~0#1.base, main_~a~0#1.offset;havoc g_#t~mem8#1.base, g_#t~mem8#1.offset, g_#t~mem9#1, g_#t~post7#1, g_~pointer#1.base, g_~pointer#1.offset, g_~i~2#1;g_~pointer#1.base, g_~pointer#1.offset := g_#in~pointer#1.base, g_#in~pointer#1.offset;havoc g_~i~2#1;g_~i~2#1 := 0; 1370#L38-3 [2021-11-20 06:05:33,644 INFO L793 eck$LassoCheckResult]: Loop: 1370#L38-3 assume !!(g_~i~2#1 < 2);call g_#t~mem8#1.base, g_#t~mem8#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * g_~i~2#1, 4); 1372#L39 assume !(g_#t~mem8#1.base == g_~pointer#1.base && g_#t~mem8#1.offset == g_~pointer#1.offset);havoc g_#t~mem8#1.base, g_#t~mem8#1.offset; 1387#L38-2 g_#t~post7#1 := g_~i~2#1;g_~i~2#1 := 1 + g_#t~post7#1;havoc g_#t~post7#1; 1370#L38-3 [2021-11-20 06:05:33,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:33,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1312987783, now seen corresponding path program 1 times [2021-11-20 06:05:33,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:33,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469127035] [2021-11-20 06:05:33,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:33,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:05:33,672 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:05:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:05:33,707 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:05:33,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:33,708 INFO L85 PathProgramCache]: Analyzing trace with hash 100808, now seen corresponding path program 4 times [2021-11-20 06:05:33,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:33,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476858200] [2021-11-20 06:05:33,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:33,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:05:33,712 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:05:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:05:33,716 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:05:33,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:33,716 INFO L85 PathProgramCache]: Analyzing trace with hash 951949698, now seen corresponding path program 1 times [2021-11-20 06:05:33,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:33,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196552833] [2021-11-20 06:05:33,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:33,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:34,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:05:34,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:05:34,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196552833] [2021-11-20 06:05:34,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196552833] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:05:34,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859318091] [2021-11-20 06:05:34,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:34,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:05:34,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:34,683 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:05:34,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-11-20 06:05:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:34,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-20 06:05:34,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:05:35,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:05:35,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 7 [2021-11-20 06:05:35,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:05:35,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 7 [2021-11-20 06:05:35,447 INFO L354 Elim1Store]: treesize reduction 126, result has 13.1 percent of original size [2021-11-20 06:05:35,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 82 [2021-11-20 06:05:35,476 INFO L354 Elim1Store]: treesize reduction 126, result has 13.1 percent of original size [2021-11-20 06:05:35,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 35 [2021-11-20 06:05:35,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2021-11-20 06:05:35,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-11-20 06:05:35,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:05:35,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:05:35,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859318091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:05:35,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:05:35,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 25 [2021-11-20 06:05:35,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134871350] [2021-11-20 06:05:35,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:05:35,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:05:35,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:05:35,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2021-11-20 06:05:35,705 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. cyclomatic complexity: 11 Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 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 06:05:35,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:05:35,987 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2021-11-20 06:05:35,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:05:35,989 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 46 transitions. [2021-11-20 06:05:35,989 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-20 06:05:35,990 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 39 states and 46 transitions. [2021-11-20 06:05:35,990 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-11-20 06:05:35,990 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-11-20 06:05:35,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 46 transitions. [2021-11-20 06:05:35,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:05:35,991 INFO L681 BuchiCegarLoop]: Abstraction has 39 states and 46 transitions. [2021-11-20 06:05:35,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 46 transitions. [2021-11-20 06:05:35,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2021-11-20 06:05:35,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 35 states have internal predecessors, (43), 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 06:05:35,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2021-11-20 06:05:35,993 INFO L704 BuchiCegarLoop]: Abstraction has 36 states and 43 transitions. [2021-11-20 06:05:35,993 INFO L587 BuchiCegarLoop]: Abstraction has 36 states and 43 transitions. [2021-11-20 06:05:35,993 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-11-20 06:05:35,993 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 43 transitions. [2021-11-20 06:05:35,994 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-20 06:05:35,994 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:05:35,994 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:05:35,995 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:05:35,995 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-11-20 06:05:35,995 INFO L791 eck$LassoCheckResult]: Stem: 1564#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3);~#pp~0.base, ~#pp~0.offset := 4, 0;call #Ultimate.allocInit(8, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, 4 + ~#pp~0.offset, 4);~#pstate~0.base, ~#pstate~0.offset := 5, 0;call #Ultimate.allocInit(8, 5);call write~init~int(0, ~#pstate~0.base, ~#pstate~0.offset, 4);call write~init~int(0, ~#pstate~0.base, 4 + ~#pstate~0.offset, 4);~counter~0 := 1; 1552#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset, main_#t~ret12#1.base, main_#t~ret12#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset;havoc main_~a~0#1.base, main_~a~0#1.offset;havoc main_~b~0#1.base, main_~b~0#1.offset;assume { :begin_inline_init } true;havoc init_#t~post4#1, init_~i~0#1;havoc init_~i~0#1;init_~i~0#1 := 0; 1553#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 1544#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 1545#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 1575#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 1579#L19-3 assume !(init_~i~0#1 < 2); 1571#L17 assume { :end_inline_init } true;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 1555#L49 main_#t~ret11#1.base, main_#t~ret11#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~a~0#1.base, main_~a~0#1.offset := main_#t~ret11#1.base, main_#t~ret11#1.offset;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 1554#L49-1 main_#t~ret12#1.base, main_#t~ret12#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~b~0#1.base, main_~b~0#1.offset := main_#t~ret12#1.base, main_#t~ret12#1.offset;havoc main_#t~ret12#1.base, main_#t~ret12#1.offset; 1546#L59 assume !((main_~a~0#1.base == 0 && main_~a~0#1.offset == 0) || (main_~b~0#1.base == 0 && main_~b~0#1.offset == 0));assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~a~0#1.base, main_~a~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 1547#L27-3 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 1573#L28 assume f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset;call write~$Pointer$(f_~pointer#1.base, f_~pointer#1.offset, ~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4);call write~int(1, ~#pstate~0.base, ~#pstate~0.offset + 4 * f_~i~1#1, 4); 1566#L25 assume { :end_inline_f } true;assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~b~0#1.base, main_~b~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 1567#L27-7 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 1558#L28-1 assume !(f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0);havoc f_#t~mem6#1.base, f_#t~mem6#1.offset; 1559#L27-6 f_#t~post5#1 := f_~i~1#1;f_~i~1#1 := 1 + f_#t~post5#1;havoc f_#t~post5#1; 1565#L27-7 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 1556#L28-1 assume f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset;call write~$Pointer$(f_~pointer#1.base, f_~pointer#1.offset, ~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4);call write~int(1, ~#pstate~0.base, ~#pstate~0.offset + 4 * f_~i~1#1, 4); 1557#L25-1 assume { :end_inline_f } true;assume { :begin_inline_g } true;g_#in~pointer#1.base, g_#in~pointer#1.offset := main_~a~0#1.base, main_~a~0#1.offset;havoc g_#t~mem8#1.base, g_#t~mem8#1.offset, g_#t~mem9#1, g_#t~post7#1, g_~pointer#1.base, g_~pointer#1.offset, g_~i~2#1;g_~pointer#1.base, g_~pointer#1.offset := g_#in~pointer#1.base, g_#in~pointer#1.offset;havoc g_~i~2#1;g_~i~2#1 := 0; 1548#L38-3 assume !!(g_~i~2#1 < 2);call g_#t~mem8#1.base, g_#t~mem8#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * g_~i~2#1, 4); 1549#L39 assume g_#t~mem8#1.base == g_~pointer#1.base && g_#t~mem8#1.offset == g_~pointer#1.offset;havoc g_#t~mem8#1.base, g_#t~mem8#1.offset;call g_#t~mem9#1 := read~int(~#pstate~0.base, ~#pstate~0.offset + 4 * g_~i~2#1, 4); 1563#L41 [2021-11-20 06:05:35,995 INFO L793 eck$LassoCheckResult]: Loop: 1563#L41 assume 1 == g_#t~mem9#1; 1561#L41-2 havoc g_#t~mem9#1;call write~int(2, ~#pstate~0.base, ~#pstate~0.offset + 4 * g_~i~2#1, 4); 1562#L38-2 g_#t~post7#1 := g_~i~2#1;g_~i~2#1 := 1 + g_#t~post7#1;havoc g_#t~post7#1; 1570#L38-3 assume !!(g_~i~2#1 < 2);call g_#t~mem8#1.base, g_#t~mem8#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * g_~i~2#1, 4); 1577#L39 assume g_#t~mem8#1.base == g_~pointer#1.base && g_#t~mem8#1.offset == g_~pointer#1.offset;havoc g_#t~mem8#1.base, g_#t~mem8#1.offset;call g_#t~mem9#1 := read~int(~#pstate~0.base, ~#pstate~0.offset + 4 * g_~i~2#1, 4); 1563#L41 [2021-11-20 06:05:35,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:35,995 INFO L85 PathProgramCache]: Analyzing trace with hash -939123286, now seen corresponding path program 1 times [2021-11-20 06:05:35,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:35,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541371536] [2021-11-20 06:05:35,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:35,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:05:36,025 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:05:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:05:36,061 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:05:36,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:36,061 INFO L85 PathProgramCache]: Analyzing trace with hash 102360307, now seen corresponding path program 1 times [2021-11-20 06:05:36,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:36,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053721467] [2021-11-20 06:05:36,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:36,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:05:36,066 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:05:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:05:36,071 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:05:36,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:36,071 INFO L85 PathProgramCache]: Analyzing trace with hash -289347350, now seen corresponding path program 1 times [2021-11-20 06:05:36,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:36,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894520256] [2021-11-20 06:05:36,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:36,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:05:36,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:05:36,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894520256] [2021-11-20 06:05:36,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894520256] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:05:36,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664065049] [2021-11-20 06:05:36,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:36,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:05:36,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:36,339 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:05:36,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-11-20 06:05:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:36,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-20 06:05:36,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:05:36,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:05:36,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 11 [2021-11-20 06:05:36,969 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-20 06:05:36,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 21 [2021-11-20 06:05:37,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-20 06:05:37,098 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:05:37,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:05:37,272 INFO L354 Elim1Store]: treesize reduction 44, result has 33.3 percent of original size [2021-11-20 06:05:37,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 41 [2021-11-20 06:05:37,279 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:05:37,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 59 [2021-11-20 06:05:37,550 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:05:37,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664065049] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:05:37,550 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:05:37,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2021-11-20 06:05:37,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176341918] [2021-11-20 06:05:37,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:05:37,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:05:37,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-20 06:05:37,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2021-11-20 06:05:37,769 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. cyclomatic complexity: 11 Second operand has 31 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 30 states have internal predecessors, (67), 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 06:05:39,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:05:39,333 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2021-11-20 06:05:39,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 06:05:39,334 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 86 transitions. [2021-11-20 06:05:39,335 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 26 [2021-11-20 06:05:39,336 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 74 states and 86 transitions. [2021-11-20 06:05:39,336 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 62 [2021-11-20 06:05:39,336 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 62 [2021-11-20 06:05:39,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 86 transitions. [2021-11-20 06:05:39,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:05:39,337 INFO L681 BuchiCegarLoop]: Abstraction has 74 states and 86 transitions. [2021-11-20 06:05:39,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states and 86 transitions. [2021-11-20 06:05:39,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 52. [2021-11-20 06:05:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 51 states have internal predecessors, (60), 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 06:05:39,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2021-11-20 06:05:39,341 INFO L704 BuchiCegarLoop]: Abstraction has 52 states and 60 transitions. [2021-11-20 06:05:39,341 INFO L587 BuchiCegarLoop]: Abstraction has 52 states and 60 transitions. [2021-11-20 06:05:39,341 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-11-20 06:05:39,341 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states and 60 transitions. [2021-11-20 06:05:39,342 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 13 [2021-11-20 06:05:39,342 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:05:39,342 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:05:39,343 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:05:39,343 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-11-20 06:05:39,343 INFO L791 eck$LassoCheckResult]: Stem: 1906#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3);~#pp~0.base, ~#pp~0.offset := 4, 0;call #Ultimate.allocInit(8, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, 4 + ~#pp~0.offset, 4);~#pstate~0.base, ~#pstate~0.offset := 5, 0;call #Ultimate.allocInit(8, 5);call write~init~int(0, ~#pstate~0.base, ~#pstate~0.offset, 4);call write~init~int(0, ~#pstate~0.base, 4 + ~#pstate~0.offset, 4);~counter~0 := 1; 1894#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset, main_#t~ret12#1.base, main_#t~ret12#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset;havoc main_~a~0#1.base, main_~a~0#1.offset;havoc main_~b~0#1.base, main_~b~0#1.offset;assume { :begin_inline_init } true;havoc init_#t~post4#1, init_~i~0#1;havoc init_~i~0#1;init_~i~0#1 := 0; 1895#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 1886#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 1887#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 1921#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 1922#L19-3 assume !(init_~i~0#1 < 2); 1915#L17 assume { :end_inline_init } true;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 1901#L49 main_#t~ret11#1.base, main_#t~ret11#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~a~0#1.base, main_~a~0#1.offset := main_#t~ret11#1.base, main_#t~ret11#1.offset;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 1896#L49-1 main_#t~ret12#1.base, main_#t~ret12#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~b~0#1.base, main_~b~0#1.offset := main_#t~ret12#1.base, main_#t~ret12#1.offset;havoc main_#t~ret12#1.base, main_#t~ret12#1.offset; 1890#L59 assume !((main_~a~0#1.base == 0 && main_~a~0#1.offset == 0) || (main_~b~0#1.base == 0 && main_~b~0#1.offset == 0));assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~a~0#1.base, main_~a~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 1891#L27-3 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 1917#L28 assume f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset;call write~$Pointer$(f_~pointer#1.base, f_~pointer#1.offset, ~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4);call write~int(1, ~#pstate~0.base, ~#pstate~0.offset + 4 * f_~i~1#1, 4); 1908#L25 assume { :end_inline_f } true;assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~b~0#1.base, main_~b~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 1909#L27-7 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 1918#L28-1 assume !(f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0);havoc f_#t~mem6#1.base, f_#t~mem6#1.offset; 1924#L27-6 f_#t~post5#1 := f_~i~1#1;f_~i~1#1 := 1 + f_#t~post5#1;havoc f_#t~post5#1; 1919#L27-7 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 1899#L28-1 assume !(f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0);havoc f_#t~mem6#1.base, f_#t~mem6#1.offset; 1900#L27-6 f_#t~post5#1 := f_~i~1#1;f_~i~1#1 := 1 + f_#t~post5#1;havoc f_#t~post5#1; 1907#L27-7 assume !(f_~i~1#1 < 2); 1923#L25-1 assume { :end_inline_f } true;assume { :begin_inline_g } true;g_#in~pointer#1.base, g_#in~pointer#1.offset := main_~a~0#1.base, main_~a~0#1.offset;havoc g_#t~mem8#1.base, g_#t~mem8#1.offset, g_#t~mem9#1, g_#t~post7#1, g_~pointer#1.base, g_~pointer#1.offset, g_~i~2#1;g_~pointer#1.base, g_~pointer#1.offset := g_#in~pointer#1.base, g_#in~pointer#1.offset;havoc g_~i~2#1;g_~i~2#1 := 0; 1937#L38-3 assume !!(g_~i~2#1 < 2);call g_#t~mem8#1.base, g_#t~mem8#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * g_~i~2#1, 4); 1935#L39 assume g_#t~mem8#1.base == g_~pointer#1.base && g_#t~mem8#1.offset == g_~pointer#1.offset;havoc g_#t~mem8#1.base, g_#t~mem8#1.offset;call g_#t~mem9#1 := read~int(~#pstate~0.base, ~#pstate~0.offset + 4 * g_~i~2#1, 4); 1913#L41 [2021-11-20 06:05:39,343 INFO L793 eck$LassoCheckResult]: Loop: 1913#L41 assume 1 == g_#t~mem9#1; 1914#L41-2 havoc g_#t~mem9#1;call write~int(2, ~#pstate~0.base, ~#pstate~0.offset + 4 * g_~i~2#1, 4); 1930#L38-2 g_#t~post7#1 := g_~i~2#1;g_~i~2#1 := 1 + g_#t~post7#1;havoc g_#t~post7#1; 1927#L38-3 assume !!(g_~i~2#1 < 2);call g_#t~mem8#1.base, g_#t~mem8#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * g_~i~2#1, 4); 1928#L39 assume g_#t~mem8#1.base == g_~pointer#1.base && g_#t~mem8#1.offset == g_~pointer#1.offset;havoc g_#t~mem8#1.base, g_#t~mem8#1.offset;call g_#t~mem9#1 := read~int(~#pstate~0.base, ~#pstate~0.offset + 4 * g_~i~2#1, 4); 1913#L41 [2021-11-20 06:05:39,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:39,344 INFO L85 PathProgramCache]: Analyzing trace with hash -501415375, now seen corresponding path program 1 times [2021-11-20 06:05:39,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:39,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312037503] [2021-11-20 06:05:39,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:39,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:39,577 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:05:39,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:05:39,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312037503] [2021-11-20 06:05:39,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312037503] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:05:39,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508314309] [2021-11-20 06:05:39,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:39,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:05:39,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:39,582 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:05:39,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-11-20 06:05:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:39,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-20 06:05:39,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:05:39,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:05:39,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 9 [2021-11-20 06:05:39,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:05:39,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 9 [2021-11-20 06:05:40,025 INFO L354 Elim1Store]: treesize reduction 140, result has 13.0 percent of original size [2021-11-20 06:05:40,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 86 [2021-11-20 06:05:40,059 INFO L354 Elim1Store]: treesize reduction 140, result has 13.0 percent of original size [2021-11-20 06:05:40,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 39 [2021-11-20 06:05:40,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2021-11-20 06:05:40,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-20 06:05:40,272 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:05:40,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:05:52,527 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_f_~i~1#1_91| Int)) (or (and (forall ((v_DerPreprocessor_22 Int) (|ULTIMATE.start_f_~pointer#1.offset| Int)) (= (select (select (let ((.cse1 (* |v_ULTIMATE.start_f_~i~1#1_91| 4))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_~#pp~0.base| (store (select |c_#memory_$Pointer$.offset| |c_~#pp~0.base|) (+ .cse1 |c_~#pp~0.offset|) |ULTIMATE.start_f_~pointer#1.offset|)))) (store .cse0 |c_~#pstate~0.base| (store (select .cse0 |c_~#pstate~0.base|) (+ .cse1 |c_~#pstate~0.offset|) v_DerPreprocessor_22)))) |c_~#pp~0.base|) (+ |c_~#pp~0.offset| 4)) 0)) (forall ((|ULTIMATE.start_f_~pointer#1.base| Int) (v_DerPreprocessor_23 Int)) (= (select (select (let ((.cse3 (* |v_ULTIMATE.start_f_~i~1#1_91| 4))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_~#pp~0.base| (store (select |c_#memory_$Pointer$.base| |c_~#pp~0.base|) (+ .cse3 |c_~#pp~0.offset|) |ULTIMATE.start_f_~pointer#1.base|)))) (store .cse2 |c_~#pstate~0.base| (store (select .cse2 |c_~#pstate~0.base|) (+ .cse3 |c_~#pstate~0.offset|) v_DerPreprocessor_23)))) |c_~#pp~0.base|) (+ |c_~#pp~0.offset| 4)) 0))) (< 0 |v_ULTIMATE.start_f_~i~1#1_91|))) is different from false [2021-11-20 06:05:52,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4100 treesize of output 4052 [2021-11-20 06:05:53,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4627 treesize of output 4615 [2021-11-20 06:05:53,148 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 06:05:53,149 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:05:53,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-11-20 06:05:53,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292325674] [2021-11-20 06:05:53,152 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 06:05:53,152 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:05:53,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:53,154 INFO L85 PathProgramCache]: Analyzing trace with hash 102360307, now seen corresponding path program 2 times [2021-11-20 06:05:53,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:53,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130951411] [2021-11-20 06:05:53,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:53,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:05:53,160 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:05:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:05:53,166 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:05:53,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:05:53,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 06:05:53,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=464, Unknown=1, NotChecked=44, Total=600 [2021-11-20 06:05:53,392 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. cyclomatic complexity: 13 Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 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 06:05:53,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:05:53,735 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-11-20 06:05:53,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:05:53,736 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 39 transitions. [2021-11-20 06:05:53,736 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-11-20 06:05:53,737 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 35 states and 38 transitions. [2021-11-20 06:05:53,737 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-11-20 06:05:53,737 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2021-11-20 06:05:53,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 38 transitions. [2021-11-20 06:05:53,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:05:53,737 INFO L681 BuchiCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-11-20 06:05:53,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 38 transitions. [2021-11-20 06:05:53,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-11-20 06:05:53,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 34 states have internal predecessors, (38), 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 06:05:53,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2021-11-20 06:05:53,740 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-11-20 06:05:53,740 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-11-20 06:05:53,740 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-11-20 06:05:53,740 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 38 transitions. [2021-11-20 06:05:53,741 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-11-20 06:05:53,741 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:05:53,741 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:05:53,741 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:05:53,742 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 06:05:53,742 INFO L791 eck$LassoCheckResult]: Stem: 2160#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3);~#pp~0.base, ~#pp~0.offset := 4, 0;call #Ultimate.allocInit(8, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, 4 + ~#pp~0.offset, 4);~#pstate~0.base, ~#pstate~0.offset := 5, 0;call #Ultimate.allocInit(8, 5);call write~init~int(0, ~#pstate~0.base, ~#pstate~0.offset, 4);call write~init~int(0, ~#pstate~0.base, 4 + ~#pstate~0.offset, 4);~counter~0 := 1; 2150#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset, main_#t~ret12#1.base, main_#t~ret12#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset;havoc main_~a~0#1.base, main_~a~0#1.offset;havoc main_~b~0#1.base, main_~b~0#1.offset;assume { :begin_inline_init } true;havoc init_#t~post4#1, init_~i~0#1;havoc init_~i~0#1;init_~i~0#1 := 0; 2151#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 2142#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 2143#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 2171#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 2175#L19-3 assume !(init_~i~0#1 < 2); 2168#L17 assume { :end_inline_init } true;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 2155#L49 main_#t~ret11#1.base, main_#t~ret11#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~a~0#1.base, main_~a~0#1.offset := main_#t~ret11#1.base, main_#t~ret11#1.offset;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 2152#L49-1 main_#t~ret12#1.base, main_#t~ret12#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~b~0#1.base, main_~b~0#1.offset := main_#t~ret12#1.base, main_#t~ret12#1.offset;havoc main_#t~ret12#1.base, main_#t~ret12#1.offset; 2146#L59 assume !((main_~a~0#1.base == 0 && main_~a~0#1.offset == 0) || (main_~b~0#1.base == 0 && main_~b~0#1.offset == 0));assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~a~0#1.base, main_~a~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 2147#L27-3 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 2170#L28 assume f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset;call write~$Pointer$(f_~pointer#1.base, f_~pointer#1.offset, ~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4);call write~int(1, ~#pstate~0.base, ~#pstate~0.offset + 4 * f_~i~1#1, 4); 2162#L25 assume { :end_inline_f } true;assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~b~0#1.base, main_~b~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 2163#L27-7 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 2153#L28-1 assume !(f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0);havoc f_#t~mem6#1.base, f_#t~mem6#1.offset; 2154#L27-6 f_#t~post5#1 := f_~i~1#1;f_~i~1#1 := 1 + f_#t~post5#1;havoc f_#t~post5#1; 2161#L27-7 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 2176#L28-1 assume f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset;call write~$Pointer$(f_~pointer#1.base, f_~pointer#1.offset, ~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4);call write~int(1, ~#pstate~0.base, ~#pstate~0.offset + 4 * f_~i~1#1, 4); 2164#L25-1 assume { :end_inline_f } true;assume { :begin_inline_g } true;g_#in~pointer#1.base, g_#in~pointer#1.offset := main_~a~0#1.base, main_~a~0#1.offset;havoc g_#t~mem8#1.base, g_#t~mem8#1.offset, g_#t~mem9#1, g_#t~post7#1, g_~pointer#1.base, g_~pointer#1.offset, g_~i~2#1;g_~pointer#1.base, g_~pointer#1.offset := g_#in~pointer#1.base, g_#in~pointer#1.offset;havoc g_~i~2#1;g_~i~2#1 := 0; 2144#L38-3 assume !!(g_~i~2#1 < 2);call g_#t~mem8#1.base, g_#t~mem8#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * g_~i~2#1, 4); 2145#L39 assume g_#t~mem8#1.base == g_~pointer#1.base && g_#t~mem8#1.offset == g_~pointer#1.offset;havoc g_#t~mem8#1.base, g_#t~mem8#1.offset;call g_#t~mem9#1 := read~int(~#pstate~0.base, ~#pstate~0.offset + 4 * g_~i~2#1, 4); 2159#L41 assume 1 == g_#t~mem9#1; 2157#L41-2 havoc g_#t~mem9#1;call write~int(2, ~#pstate~0.base, ~#pstate~0.offset + 4 * g_~i~2#1, 4); 2158#L38-2 g_#t~post7#1 := g_~i~2#1;g_~i~2#1 := 1 + g_#t~post7#1;havoc g_#t~post7#1; 2167#L38-3 assume !!(g_~i~2#1 < 2);call g_#t~mem8#1.base, g_#t~mem8#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * g_~i~2#1, 4); 2173#L39 [2021-11-20 06:05:53,742 INFO L793 eck$LassoCheckResult]: Loop: 2173#L39 assume !(g_#t~mem8#1.base == g_~pointer#1.base && g_#t~mem8#1.offset == g_~pointer#1.offset);havoc g_#t~mem8#1.base, g_#t~mem8#1.offset; 2174#L38-2 g_#t~post7#1 := g_~i~2#1;g_~i~2#1 := 1 + g_#t~post7#1;havoc g_#t~post7#1; 2172#L38-3 assume !!(g_~i~2#1 < 2);call g_#t~mem8#1.base, g_#t~mem8#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * g_~i~2#1, 4); 2173#L39 [2021-11-20 06:05:53,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:53,742 INFO L85 PathProgramCache]: Analyzing trace with hash -147881120, now seen corresponding path program 2 times [2021-11-20 06:05:53,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:53,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754921313] [2021-11-20 06:05:53,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:53,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:05:53,769 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:05:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:05:53,803 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:05:53,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:53,804 INFO L85 PathProgramCache]: Analyzing trace with hash 116228, now seen corresponding path program 5 times [2021-11-20 06:05:53,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:53,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566761979] [2021-11-20 06:05:53,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:53,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:05:53,807 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:05:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:05:53,811 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:05:53,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:53,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1110086213, now seen corresponding path program 1 times [2021-11-20 06:05:53,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:53,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104710218] [2021-11-20 06:05:53,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:53,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:53,849 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 06:05:53,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:05:53,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104710218] [2021-11-20 06:05:53,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104710218] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:05:53,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018584761] [2021-11-20 06:05:53,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:53,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:05:53,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:53,853 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:05:53,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-11-20 06:05:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:53,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:05:53,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:05:53,982 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 06:05:53,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:05:53,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018584761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:05:53,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:05:53,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-20 06:05:53,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997318206] [2021-11-20 06:05:53,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:05:54,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:05:54,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:05:54,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:05:54,034 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. cyclomatic complexity: 6 Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 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 06:05:54,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:05:54,069 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2021-11-20 06:05:54,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:05:54,070 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 43 transitions. [2021-11-20 06:05:54,071 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-20 06:05:54,071 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 0 states and 0 transitions. [2021-11-20 06:05:54,072 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-20 06:05:54,072 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-20 06:05:54,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-20 06:05:54,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:05:54,072 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:05:54,072 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:05:54,072 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:05:54,072 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-11-20 06:05:54,072 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-20 06:05:54,072 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-20 06:05:54,072 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-20 06:05:54,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 06:05:54 BoogieIcfgContainer [2021-11-20 06:05:54,078 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-20 06:05:54,078 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:05:54,078 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:05:54,079 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:05:54,079 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:04:29" (3/4) ... [2021-11-20 06:05:54,082 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 06:05:54,083 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:05:54,083 INFO L158 Benchmark]: Toolchain (without parser) took 85869.69ms. Allocated memory was 94.4MB in the beginning and 197.1MB in the end (delta: 102.8MB). Free memory was 53.3MB in the beginning and 86.7MB in the end (delta: -33.4MB). Peak memory consumption was 69.1MB. Max. memory is 16.1GB. [2021-11-20 06:05:54,084 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 94.4MB. Free memory is still 70.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:05:54,084 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.42ms. Allocated memory is still 94.4MB. Free memory was 53.1MB in the beginning and 69.7MB in the end (delta: -16.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-20 06:05:54,084 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.36ms. Allocated memory is still 94.4MB. Free memory was 69.7MB in the beginning and 67.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:05:54,084 INFO L158 Benchmark]: Boogie Preprocessor took 60.05ms. Allocated memory is still 94.4MB. Free memory was 67.9MB in the beginning and 66.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:05:54,085 INFO L158 Benchmark]: RCFGBuilder took 530.65ms. Allocated memory is still 94.4MB. Free memory was 66.2MB in the beginning and 51.7MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 06:05:54,085 INFO L158 Benchmark]: BuchiAutomizer took 84871.92ms. Allocated memory was 94.4MB in the beginning and 197.1MB in the end (delta: 102.8MB). Free memory was 51.7MB in the beginning and 86.7MB in the end (delta: -35.0MB). Peak memory consumption was 69.3MB. Max. memory is 16.1GB. [2021-11-20 06:05:54,085 INFO L158 Benchmark]: Witness Printer took 4.43ms. Allocated memory is still 197.1MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:05:54,087 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 94.4MB. Free memory is still 70.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.42ms. Allocated memory is still 94.4MB. Free memory was 53.1MB in the beginning and 69.7MB in the end (delta: -16.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.36ms. Allocated memory is still 94.4MB. Free memory was 69.7MB in the beginning and 67.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 60.05ms. Allocated memory is still 94.4MB. Free memory was 67.9MB in the beginning and 66.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 530.65ms. Allocated memory is still 94.4MB. Free memory was 66.2MB in the beginning and 51.7MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * BuchiAutomizer took 84871.92ms. Allocated memory was 94.4MB in the beginning and 197.1MB in the end (delta: 102.8MB). Free memory was 51.7MB in the beginning and 86.7MB in the end (delta: -35.0MB). Peak memory consumption was 69.3MB. Max. memory is 16.1GB. * Witness Printer took 4.43ms. Allocated memory is still 197.1MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (10 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 3 + -2 * i and consists of 5 locations. One deterministic module has affine ranking function -4 * i + unknown-#length-unknown[pp] and consists of 4 locations. 10 modules have a trivial ranking function, the largest among these consists of 31 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 84.8s and 13 iterations. TraceHistogramMax:2. Analysis of lassos took 81.2s. Construction of modules took 1.0s. Büchi inclusion checks took 2.3s. Highest rank in rank-based complementation 3. Minimization of det autom 6. Minimization of nondet autom 6. Automata minimization 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 79 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 52 states and ocurred in iteration 10. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 628 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 626 mSDsluCounter, 986 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 68 IncrementalHoareTripleChecker+Unchecked, 691 mSDsCounter, 185 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 990 IncrementalHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 185 mSolverCounterUnsat, 295 mSDtfsCounter, 990 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc4 concLT0 SILN0 SILU6 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital1509 mio100 ax100 hnf99 lsp97 ukn31 mio100 lsp35 div100 bol100 ite100 ukn100 eq182 hnf91 smp100 dnf110 smp100 tf100 neg98 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 185ms VariablesStem: 13 VariablesLoop: 6 DisjunctsStem: 1 DisjunctsLoop: 4 SupportingInvariants: 8 MotzkinApplications: 48 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-20 06:05:54,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:54,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-11-20 06:05:54,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:54,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-11-20 06:05:54,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:55,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:55,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-11-20 06:05:55,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4d4902-3fa2-43fd-833b-4736c396e715/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE