./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/nec11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/nec11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa --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 b78564a93d1d434db2fa377a9b33de67cda5b233a427ae8d3550b20661e154a3 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:26:38,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:26:38,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:26:38,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:26:38,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:26:38,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:26:38,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:26:38,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:26:38,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:26:38,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:26:38,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:26:38,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:26:38,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:26:38,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:26:38,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:26:38,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:26:38,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:26:38,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:26:38,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:26:38,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:26:38,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:26:38,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:26:38,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:26:38,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:26:38,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:26:38,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:26:38,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:26:38,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:26:38,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:26:38,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:26:38,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:26:38,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:26:38,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:26:38,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:26:38,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:26:38,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:26:38,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:26:38,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:26:38,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:26:38,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:26:38,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:26:38,888 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-07 00:26:38,914 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:26:38,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:26:38,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:26:38,914 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:26:38,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:26:38,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:26:38,916 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:26:38,916 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-07 00:26:38,916 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-07 00:26:38,917 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-07 00:26:38,917 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-07 00:26:38,917 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-07 00:26:38,917 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-07 00:26:38,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:26:38,918 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:26:38,918 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-07 00:26:38,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:26:38,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:26:38,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:26:38,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-07 00:26:38,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-07 00:26:38,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-07 00:26:38,919 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:26:38,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:26:38,920 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-07 00:26:38,920 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:26:38,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-07 00:26:38,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:26:38,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:26:38,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:26:38,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:26:38,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:26:38,922 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-07 00:26:38,922 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_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b78564a93d1d434db2fa377a9b33de67cda5b233a427ae8d3550b20661e154a3 [2021-12-07 00:26:39,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:26:39,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:26:39,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:26:39,146 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:26:39,146 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:26:39,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/loops/nec11.c [2021-12-07 00:26:39,189 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/data/92ae8baa9/0c241bfb822b491eb9c7f07124b216bb/FLAG9a0d09624 [2021-12-07 00:26:39,533 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:26:39,534 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/sv-benchmarks/c/loops/nec11.c [2021-12-07 00:26:39,539 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/data/92ae8baa9/0c241bfb822b491eb9c7f07124b216bb/FLAG9a0d09624 [2021-12-07 00:26:39,549 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/data/92ae8baa9/0c241bfb822b491eb9c7f07124b216bb [2021-12-07 00:26:39,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:26:39,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:26:39,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:26:39,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:26:39,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:26:39,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:26:39" (1/1) ... [2021-12-07 00:26:39,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@476e780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:39, skipping insertion in model container [2021-12-07 00:26:39,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:26:39" (1/1) ... [2021-12-07 00:26:39,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:26:39,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:26:39,683 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_e6ef5f05-e859-435f-9622-dc7d683e5af3/sv-benchmarks/c/loops/nec11.c[317,330] [2021-12-07 00:26:39,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:26:39,697 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:26:39,705 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_e6ef5f05-e859-435f-9622-dc7d683e5af3/sv-benchmarks/c/loops/nec11.c[317,330] [2021-12-07 00:26:39,707 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:26:39,717 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:26:39,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:39 WrapperNode [2021-12-07 00:26:39,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:26:39,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:26:39,718 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:26:39,718 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:26:39,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:39" (1/1) ... [2021-12-07 00:26:39,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:39" (1/1) ... [2021-12-07 00:26:39,740 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2021-12-07 00:26:39,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:26:39,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:26:39,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:26:39,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:26:39,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:39" (1/1) ... [2021-12-07 00:26:39,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:39" (1/1) ... [2021-12-07 00:26:39,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:39" (1/1) ... [2021-12-07 00:26:39,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:39" (1/1) ... [2021-12-07 00:26:39,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:39" (1/1) ... [2021-12-07 00:26:39,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:39" (1/1) ... [2021-12-07 00:26:39,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:39" (1/1) ... [2021-12-07 00:26:39,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:26:39,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:26:39,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:26:39,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:26:39,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:39" (1/1) ... [2021-12-07 00:26:39,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:26:39,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:39,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:26:39,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-07 00:26:39,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:26:39,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:26:39,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:26:39,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:26:39,869 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:26:39,870 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:26:39,925 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:26:39,930 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:26:39,930 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 00:26:39,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:26:39 BoogieIcfgContainer [2021-12-07 00:26:39,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:26:39,932 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-07 00:26:39,933 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-07 00:26:39,935 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-07 00:26:39,936 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 00:26:39,936 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 12:26:39" (1/3) ... [2021-12-07 00:26:39,937 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@46073e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 12:26:39, skipping insertion in model container [2021-12-07 00:26:39,937 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 00:26:39,937 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:39" (2/3) ... [2021-12-07 00:26:39,937 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@46073e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 12:26:39, skipping insertion in model container [2021-12-07 00:26:39,937 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 00:26:39,937 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:26:39" (3/3) ... [2021-12-07 00:26:39,938 INFO L388 chiAutomizerObserver]: Analyzing ICFG nec11.c [2021-12-07 00:26:39,971 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-07 00:26:39,972 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-07 00:26:39,972 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-07 00:26:39,972 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-07 00:26:39,972 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-07 00:26:39,972 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-07 00:26:39,972 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-07 00:26:39,972 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-07 00:26:39,982 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 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) [2021-12-07 00:26:39,998 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-07 00:26:39,998 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:26:39,998 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:26:40,004 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-07 00:26:40,004 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-07 00:26:40,004 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-07 00:26:40,005 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 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) [2021-12-07 00:26:40,006 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-07 00:26:40,006 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:26:40,006 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:26:40,007 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-07 00:26:40,007 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-07 00:26:40,012 INFO L791 eck$LassoCheckResult]: Stem: 5#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(8, 2);call #Ultimate.allocInit(12, 3); 12#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~post5#1, main_~a~0#1, main_~len~0#1, main_~c~0#1, main_~i~0#1;havoc main_~a~0#1;main_~len~0#1 := 0;main_~c~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~i~0#1; 10#L21-2true [2021-12-07 00:26:40,013 INFO L793 eck$LassoCheckResult]: Loop: 10#L21-2true assume !!(0 != main_~c~0#1 % 256); 9#L23true assume !(4 == main_~len~0#1); 8#L23-2true assume 0 <= main_~len~0#1 && main_~len~0#1 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 10#L21-2true [2021-12-07 00:26:40,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:40,018 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-07 00:26:40,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:40,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713734086] [2021-12-07 00:26:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:40,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:26:40,102 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:26:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:26:40,124 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:26:40,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:40,126 INFO L85 PathProgramCache]: Analyzing trace with hash 40876, now seen corresponding path program 1 times [2021-12-07 00:26:40,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:40,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060501064] [2021-12-07 00:26:40,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:40,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:26:40,140 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:26:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:26:40,149 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:26:40,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:40,150 INFO L85 PathProgramCache]: Analyzing trace with hash 28699818, now seen corresponding path program 1 times [2021-12-07 00:26:40,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:40,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280761496] [2021-12-07 00:26:40,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:40,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:26:40,165 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:26:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:26:40,178 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:26:40,356 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:26:40,357 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:26:40,357 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:26:40,357 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:26:40,357 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 00:26:40,357 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:26:40,357 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:26:40,357 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:26:40,357 INFO L133 ssoRankerPreferences]: Filename of dumped script: nec11.c_Iteration1_Lasso [2021-12-07 00:26:40,357 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:26:40,357 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:26:40,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:26:40,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:26:40,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:26:40,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:26:40,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:26:40,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:26:40,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:26:40,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:26:40,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:26:40,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:26:40,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:26:40,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:26:40,567 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:26:40,571 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 00:26:40,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:26:40,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:40,574 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:26:40,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-07 00:26:40,575 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 [2021-12-07 00:26:40,585 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:26:40,585 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:26:40,585 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:26:40,585 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:26:40,588 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:26:40,588 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:26:40,593 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:26:40,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:26:40,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:26:40,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:40,616 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:26:40,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-07 00:26:40,618 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 [2021-12-07 00:26:40,627 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:26:40,627 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:26:40,627 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:26:40,627 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:26:40,630 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:26:40,630 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:26:40,634 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:26:40,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-07 00:26:40,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:26:40,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:40,665 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:26:40,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-07 00:26:40,666 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 [2021-12-07 00:26:40,674 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:26:40,674 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:26:40,674 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:26:40,674 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:26:40,674 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:26:40,675 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:26:40,675 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:26:40,676 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:26:40,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-07 00:26:40,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:26:40,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:40,696 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:26:40,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-07 00:26:40,697 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 [2021-12-07 00:26:40,704 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:26:40,705 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:26:40,705 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:26:40,705 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:26:40,707 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:26:40,708 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:26:40,711 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:26:40,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-07 00:26:40,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:26:40,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:40,731 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:26:40,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-07 00:26:40,732 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 [2021-12-07 00:26:40,739 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:26:40,739 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:26:40,739 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:26:40,739 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:26:40,741 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:26:40,741 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:26:40,748 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:26:40,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-07 00:26:40,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:26:40,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:40,775 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:26:40,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-07 00:26:40,776 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 [2021-12-07 00:26:40,783 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:26:40,783 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:26:40,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:26:40,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:26:40,785 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:26:40,785 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:26:40,789 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:26:40,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-07 00:26:40,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:26:40,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:40,815 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:26:40,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-07 00:26:40,818 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 [2021-12-07 00:26:40,825 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:26:40,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:26:40,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:26:40,825 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:26:40,827 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:26:40,827 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:26:40,829 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:26:40,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-07 00:26:40,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:26:40,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:40,849 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:26:40,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-07 00:26:40,850 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 [2021-12-07 00:26:40,857 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:26:40,857 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:26:40,857 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:26:40,857 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:26:40,859 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:26:40,859 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:26:40,862 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:26:40,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-07 00:26:40,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:26:40,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:40,882 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:26:40,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-07 00:26:40,884 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 [2021-12-07 00:26:40,891 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:26:40,891 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:26:40,891 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:26:40,891 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:26:40,893 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:26:40,893 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:26:40,896 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:26:40,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-12-07 00:26:40,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:26:40,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:40,915 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:26:40,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-07 00:26:40,916 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 [2021-12-07 00:26:40,923 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:26:40,923 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:26:40,923 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:26:40,923 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:26:40,924 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:26:40,925 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:26:40,927 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:26:40,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2021-12-07 00:26:40,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:26:40,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:40,947 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:26:40,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-07 00:26:40,948 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 [2021-12-07 00:26:40,955 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:26:40,955 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:26:40,955 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:26:40,955 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:26:40,957 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:26:40,957 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:26:40,961 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:26:40,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-12-07 00:26:40,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:26:40,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:40,981 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:26:40,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-07 00:26:40,982 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 [2021-12-07 00:26:40,989 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:26:40,989 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:26:40,989 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:26:40,989 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:26:40,989 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:26:40,990 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:26:40,990 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:26:40,992 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:26:41,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-12-07 00:26:41,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:26:41,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:41,012 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:26:41,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-07 00:26:41,013 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 [2021-12-07 00:26:41,020 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:26:41,020 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:26:41,020 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:26:41,020 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:26:41,020 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:26:41,021 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:26:41,021 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:26:41,022 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:26:41,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-12-07 00:26:41,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:26:41,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:41,041 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:26:41,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-07 00:26:41,042 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 [2021-12-07 00:26:41,049 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:26:41,049 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:26:41,049 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:26:41,049 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:26:41,051 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:26:41,051 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:26:41,053 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:26:41,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-12-07 00:26:41,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:26:41,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:41,073 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:26:41,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-07 00:26:41,078 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 [2021-12-07 00:26:41,085 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:26:41,085 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:26:41,085 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:26:41,086 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:26:41,086 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:26:41,086 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:26:41,086 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:26:41,087 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:26:41,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-12-07 00:26:41,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:26:41,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:41,112 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:26:41,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-07 00:26:41,113 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 [2021-12-07 00:26:41,119 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:26:41,119 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:26:41,119 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:26:41,120 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:26:41,121 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:26:41,121 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:26:41,123 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:26:41,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-12-07 00:26:41,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:26:41,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:41,143 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:26:41,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-07 00:26:41,144 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 [2021-12-07 00:26:41,151 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:26:41,151 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:26:41,151 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:26:41,151 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:26:41,151 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:26:41,151 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:26:41,152 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:26:41,152 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:26:41,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2021-12-07 00:26:41,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:26:41,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:41,171 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:26:41,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-07 00:26:41,173 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 [2021-12-07 00:26:41,180 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:26:41,180 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:26:41,180 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:26:41,180 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:26:41,182 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:26:41,182 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:26:41,186 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 00:26:41,198 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2021-12-07 00:26:41,198 INFO L444 ModelExtractionUtils]: 0 out of 7 variables were initially zero. Simplification set additionally 4 variables to zero. [2021-12-07 00:26:41,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:26:41,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:41,200 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:26:41,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-07 00:26:41,202 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 00:26:41,210 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-12-07 00:26:41,210 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 00:26:41,211 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~len~0#1) = -2*ULTIMATE.start_main_~len~0#1 + 7 Supporting invariants [] [2021-12-07 00:26:41,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-12-07 00:26:41,243 INFO L297 tatePredicateManager]: 1 out of 1 supporting invariants were superfluous and have been removed [2021-12-07 00:26:41,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:41,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:26:41,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:26:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:41,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:26:41,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:26:41,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:41,325 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 [2021-12-07 00:26:41,326 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:26:41,358 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 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). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 39 states and 49 transitions. Complement of second has 8 states. [2021-12-07 00:26:41,359 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 [2021-12-07 00:26:41,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:26:41,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2021-12-07 00:26:41,365 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 2 letters. Loop has 3 letters. [2021-12-07 00:26:41,365 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:26:41,366 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-07 00:26:41,366 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:26:41,366 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 2 letters. Loop has 6 letters. [2021-12-07 00:26:41,366 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:26:41,366 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 49 transitions. [2021-12-07 00:26:41,369 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-07 00:26:41,371 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 10 states and 13 transitions. [2021-12-07 00:26:41,372 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-12-07 00:26:41,372 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-12-07 00:26:41,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2021-12-07 00:26:41,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:26:41,373 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-12-07 00:26:41,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2021-12-07 00:26:41,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-12-07 00:26:41,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 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) [2021-12-07 00:26:41,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2021-12-07 00:26:41,393 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-12-07 00:26:41,393 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-12-07 00:26:41,393 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-07 00:26:41,393 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2021-12-07 00:26:41,394 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-07 00:26:41,394 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:26:41,394 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:26:41,394 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-07 00:26:41,394 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-07 00:26:41,394 INFO L791 eck$LassoCheckResult]: Stem: 98#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(8, 2);call #Ultimate.allocInit(12, 3); 99#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~post5#1, main_~a~0#1, main_~len~0#1, main_~c~0#1, main_~i~0#1;havoc main_~a~0#1;main_~len~0#1 := 0;main_~c~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~i~0#1; 106#L21-2 assume !!(0 != main_~c~0#1 % 256); 104#L23 assume 4 == main_~len~0#1;main_~len~0#1 := 0; 100#L23-2 [2021-12-07 00:26:41,394 INFO L793 eck$LassoCheckResult]: Loop: 100#L23-2 assume 0 <= main_~len~0#1 && main_~len~0#1 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 101#L21-2 assume !!(0 != main_~c~0#1 % 256); 107#L23 assume !(4 == main_~len~0#1); 100#L23-2 [2021-12-07 00:26:41,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:41,395 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2021-12-07 00:26:41,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:41,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265154217] [2021-12-07 00:26:41,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:41,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:41,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:41,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265154217] [2021-12-07 00:26:41,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265154217] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:41,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:41,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:26:41,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98037396] [2021-12-07 00:26:41,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:41,432 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-07 00:26:41,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:41,433 INFO L85 PathProgramCache]: Analyzing trace with hash 47446, now seen corresponding path program 2 times [2021-12-07 00:26:41,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:41,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858778701] [2021-12-07 00:26:41,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:41,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:26:41,439 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:26:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:26:41,444 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:26:41,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:41,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:26:41,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:26:41,473 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 3 states, 2 states have (on average 2.0) 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) [2021-12-07 00:26:41,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:41,480 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2021-12-07 00:26:41,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:26:41,481 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 16 transitions. [2021-12-07 00:26:41,481 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-07 00:26:41,482 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 15 transitions. [2021-12-07 00:26:41,482 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-07 00:26:41,482 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-07 00:26:41,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 15 transitions. [2021-12-07 00:26:41,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:26:41,482 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-12-07 00:26:41,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 15 transitions. [2021-12-07 00:26:41,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2021-12-07 00:26:41,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 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) [2021-12-07 00:26:41,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-12-07 00:26:41,483 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-12-07 00:26:41,483 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-12-07 00:26:41,483 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-07 00:26:41,483 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2021-12-07 00:26:41,484 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-07 00:26:41,484 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:26:41,484 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:26:41,484 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-12-07 00:26:41,484 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-07 00:26:41,484 INFO L791 eck$LassoCheckResult]: Stem: 128#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(8, 2);call #Ultimate.allocInit(12, 3); 129#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~post5#1, main_~a~0#1, main_~len~0#1, main_~c~0#1, main_~i~0#1;havoc main_~a~0#1;main_~len~0#1 := 0;main_~c~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~i~0#1; 137#L21-2 assume !!(0 != main_~c~0#1 % 256); 135#L23 assume !(4 == main_~len~0#1); 132#L23-2 assume 0 <= main_~len~0#1 && main_~len~0#1 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 133#L21-2 assume !!(0 != main_~c~0#1 % 256); 134#L23 assume 4 == main_~len~0#1;main_~len~0#1 := 0; 130#L23-2 [2021-12-07 00:26:41,484 INFO L793 eck$LassoCheckResult]: Loop: 130#L23-2 assume 0 <= main_~len~0#1 && main_~len~0#1 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 131#L21-2 assume !!(0 != main_~c~0#1 % 256); 136#L23 assume !(4 == main_~len~0#1); 130#L23-2 [2021-12-07 00:26:41,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:41,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1810721677, now seen corresponding path program 1 times [2021-12-07 00:26:41,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:41,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357206455] [2021-12-07 00:26:41,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:41,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:41,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:41,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357206455] [2021-12-07 00:26:41,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357206455] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:26:41,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883457231] [2021-12-07 00:26:41,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:41,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:41,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:41,508 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:26:41,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-07 00:26:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:41,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:26:41,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:26:41,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:41,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:26:41,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:41,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883457231] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:26:41,578 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:26:41,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-12-07 00:26:41,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793697480] [2021-12-07 00:26:41,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:26:41,578 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-07 00:26:41,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:41,579 INFO L85 PathProgramCache]: Analyzing trace with hash 47446, now seen corresponding path program 3 times [2021-12-07 00:26:41,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:41,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721301147] [2021-12-07 00:26:41,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:41,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:26:41,584 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:26:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:26:41,589 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:26:41,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:41,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:26:41,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:26:41,617 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. cyclomatic complexity: 4 Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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) [2021-12-07 00:26:41,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:41,633 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-12-07 00:26:41,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:26:41,634 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 36 transitions. [2021-12-07 00:26:41,635 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-12-07 00:26:41,635 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 31 states and 33 transitions. [2021-12-07 00:26:41,635 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-12-07 00:26:41,636 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-12-07 00:26:41,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 33 transitions. [2021-12-07 00:26:41,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:26:41,636 INFO L681 BuchiCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-12-07 00:26:41,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 33 transitions. [2021-12-07 00:26:41,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2021-12-07 00:26:41,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 27 states have internal predecessors, (30), 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) [2021-12-07 00:26:41,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-12-07 00:26:41,638 INFO L704 BuchiCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-12-07 00:26:41,638 INFO L587 BuchiCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-12-07 00:26:41,638 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-07 00:26:41,638 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 30 transitions. [2021-12-07 00:26:41,639 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-07 00:26:41,639 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:26:41,639 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:26:41,640 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 1, 1, 1] [2021-12-07 00:26:41,640 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 3, 1] [2021-12-07 00:26:41,640 INFO L791 eck$LassoCheckResult]: Stem: 218#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(8, 2);call #Ultimate.allocInit(12, 3); 219#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~post5#1, main_~a~0#1, main_~len~0#1, main_~c~0#1, main_~i~0#1;havoc main_~a~0#1;main_~len~0#1 := 0;main_~c~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~i~0#1; 229#L21-2 assume !!(0 != main_~c~0#1 % 256); 226#L23 assume !(4 == main_~len~0#1); 222#L23-2 assume 0 <= main_~len~0#1 && main_~len~0#1 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 223#L21-2 assume !!(0 != main_~c~0#1 % 256); 228#L23 assume !(4 == main_~len~0#1); 237#L23-2 assume 0 <= main_~len~0#1 && main_~len~0#1 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 236#L21-2 assume !!(0 != main_~c~0#1 % 256); 235#L23 assume !(4 == main_~len~0#1); 234#L23-2 assume 0 <= main_~len~0#1 && main_~len~0#1 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 233#L21-2 assume !!(0 != main_~c~0#1 % 256); 231#L23 assume !(4 == main_~len~0#1); 232#L23-2 assume 0 <= main_~len~0#1 && main_~len~0#1 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 230#L21-2 assume !!(0 != main_~c~0#1 % 256); 224#L23 assume 4 == main_~len~0#1;main_~len~0#1 := 0; 225#L23-2 [2021-12-07 00:26:41,640 INFO L793 eck$LassoCheckResult]: Loop: 225#L23-2 assume 0 <= main_~len~0#1 && main_~len~0#1 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 245#L21-2 assume !!(0 != main_~c~0#1 % 256); 238#L23 assume !(4 == main_~len~0#1); 220#L23-2 assume 0 <= main_~len~0#1 && main_~len~0#1 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 221#L21-2 assume !!(0 != main_~c~0#1 % 256); 227#L23 assume !(4 == main_~len~0#1); 244#L23-2 assume 0 <= main_~len~0#1 && main_~len~0#1 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 243#L21-2 assume !!(0 != main_~c~0#1 % 256); 242#L23 assume !(4 == main_~len~0#1); 240#L23-2 assume 0 <= main_~len~0#1 && main_~len~0#1 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 241#L21-2 assume !!(0 != main_~c~0#1 % 256); 239#L23 assume 4 == main_~len~0#1;main_~len~0#1 := 0; 225#L23-2 [2021-12-07 00:26:41,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:41,640 INFO L85 PathProgramCache]: Analyzing trace with hash 658202022, now seen corresponding path program 2 times [2021-12-07 00:26:41,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:41,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895633584] [2021-12-07 00:26:41,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:41,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:26:41,651 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:26:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:26:41,663 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:26:41,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:41,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1957011391, now seen corresponding path program 1 times [2021-12-07 00:26:41,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:41,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935077325] [2021-12-07 00:26:41,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:41,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:26:41,672 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:26:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:26:41,680 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:26:41,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:41,680 INFO L85 PathProgramCache]: Analyzing trace with hash -282022428, now seen corresponding path program 3 times [2021-12-07 00:26:41,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:41,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687098221] [2021-12-07 00:26:41,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:41,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:26:41,699 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:26:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:26:41,719 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:26:41,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-12-07 00:26:41,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2021-12-07 00:26:42,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 12:26:42 BoogieIcfgContainer [2021-12-07 00:26:42,058 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-07 00:26:42,058 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 00:26:42,059 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 00:26:42,059 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 00:26:42,059 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:26:39" (3/4) ... [2021-12-07 00:26:42,061 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-07 00:26:42,098 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-07 00:26:42,098 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 00:26:42,099 INFO L158 Benchmark]: Toolchain (without parser) took 2546.56ms. Allocated memory was 79.7MB in the beginning and 132.1MB in the end (delta: 52.4MB). Free memory was 44.4MB in the beginning and 81.1MB in the end (delta: -36.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-07 00:26:42,099 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 79.7MB. Free memory is still 60.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:26:42,100 INFO L158 Benchmark]: CACSL2BoogieTranslator took 163.88ms. Allocated memory was 79.7MB in the beginning and 109.1MB in the end (delta: 29.4MB). Free memory was 44.2MB in the beginning and 86.0MB in the end (delta: -41.8MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-12-07 00:26:42,100 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.59ms. Allocated memory is still 109.1MB. Free memory was 86.0MB in the beginning and 84.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:26:42,101 INFO L158 Benchmark]: Boogie Preprocessor took 13.34ms. Allocated memory is still 109.1MB. Free memory was 84.4MB in the beginning and 83.6MB in the end (delta: 765.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:26:42,101 INFO L158 Benchmark]: RCFGBuilder took 177.01ms. Allocated memory is still 109.1MB. Free memory was 83.6MB in the beginning and 74.9MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-07 00:26:42,102 INFO L158 Benchmark]: BuchiAutomizer took 2125.48ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 74.9MB in the beginning and 83.2MB in the end (delta: -8.3MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. [2021-12-07 00:26:42,102 INFO L158 Benchmark]: Witness Printer took 39.89ms. Allocated memory is still 132.1MB. Free memory was 83.2MB in the beginning and 81.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:26:42,104 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 79.7MB. Free memory is still 60.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 163.88ms. Allocated memory was 79.7MB in the beginning and 109.1MB in the end (delta: 29.4MB). Free memory was 44.2MB in the beginning and 86.0MB in the end (delta: -41.8MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.59ms. Allocated memory is still 109.1MB. Free memory was 86.0MB in the beginning and 84.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.34ms. Allocated memory is still 109.1MB. Free memory was 84.4MB in the beginning and 83.6MB in the end (delta: 765.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 177.01ms. Allocated memory is still 109.1MB. Free memory was 83.6MB in the beginning and 74.9MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 2125.48ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 74.9MB in the beginning and 83.2MB in the end (delta: -8.3MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. * Witness Printer took 39.89ms. Allocated memory is still 132.1MB. Free memory was 83.2MB in the beginning and 81.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 3 terminating modules (2 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function 7 + -2 * len and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 7 locations. The remainder module has 28 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 4 iterations. TraceHistogramMax:5. Analysis of lassos took 1.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 28 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25 IncrementalHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 17 mSDtfsCounter, 25 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU2 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital90 mio100 ax100 hnf100 lsp27 ukn75 mio100 lsp100 div236 bol100 ite100 ukn100 eq144 hnf49 smp78 dnf100 smp100 tf100 neg95 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 20ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 21]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {i=0, len=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@53bf6664=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@523bf86c=0, NULL=1, \result=0, c=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 23]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int a[5]; [L16] int len=0; [L17] _Bool c=__VERIFIER_nondet_bool(); [L18] int i; [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND TRUE len==4 [L24] len =0 Loop: [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND TRUE len==4 [L24] len =0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-07 00:26:42,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-07 00:26:42,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ef5f05-e859-435f-9622-dc7d683e5af3/bin/uautomizer-DrprNOufMa/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)