./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/4BitCounterPointer.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/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_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/4BitCounterPointer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/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 64bit --witnessprinter.graph.data.programhash 7e6a17b7d4143542ba439290f9741c160a8cb32cc90a0cc2a238a67702990ba0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:54:36,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:54:36,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:54:36,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:54:36,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:54:36,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:54:36,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:54:36,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:54:36,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:54:36,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:54:36,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:54:36,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:54:36,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:54:36,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:54:36,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:54:36,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:54:36,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:54:36,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:54:36,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:54:36,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:54:36,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:54:36,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:54:36,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:54:36,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:54:36,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:54:36,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:54:36,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:54:36,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:54:36,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:54:36,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:54:36,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:54:36,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:54:36,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:54:36,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:54:36,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:54:36,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:54:36,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:54:36,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:54:36,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:54:36,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:54:36,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:54:36,697 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-06 21:54:36,716 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:54:36,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:54:36,716 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:54:36,716 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:54:36,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:54:36,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:54:36,718 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:54:36,718 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-06 21:54:36,718 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-06 21:54:36,718 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-06 21:54:36,718 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-06 21:54:36,718 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-06 21:54:36,718 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-06 21:54:36,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:54:36,719 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 21:54:36,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:54:36,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:54:36,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-06 21:54:36,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-06 21:54:36,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-06 21:54:36,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:54:36,720 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-06 21:54:36,720 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:54:36,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-06 21:54:36,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:54:36,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:54:36,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:54:36,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 21:54:36,721 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:54:36,722 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-06 21:54:36,722 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_401c7e5d-7d06-466d-a91f-83b69800720b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e6a17b7d4143542ba439290f9741c160a8cb32cc90a0cc2a238a67702990ba0 [2021-12-06 21:54:36,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:54:36,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:54:36,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:54:36,931 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:54:36,932 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:54:36,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/termination-crafted/4BitCounterPointer.c [2021-12-06 21:54:36,976 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/data/d3261ebf1/fc75ac37025a4ffeac62ff28fc7e6c4f/FLAG4c4535e6c [2021-12-06 21:54:37,316 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:54:37,316 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/sv-benchmarks/c/termination-crafted/4BitCounterPointer.c [2021-12-06 21:54:37,321 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/data/d3261ebf1/fc75ac37025a4ffeac62ff28fc7e6c4f/FLAG4c4535e6c [2021-12-06 21:54:37,752 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/data/d3261ebf1/fc75ac37025a4ffeac62ff28fc7e6c4f [2021-12-06 21:54:37,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:54:37,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:54:37,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:54:37,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:54:37,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:54:37,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:54:37" (1/1) ... [2021-12-06 21:54:37,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d39929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:54:37, skipping insertion in model container [2021-12-06 21:54:37,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:54:37" (1/1) ... [2021-12-06 21:54:37,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:54:37,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:54:37,873 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:54:37,879 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:54:37,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:54:37,898 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:54:37,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:54:37 WrapperNode [2021-12-06 21:54:37,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:54:37,899 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:54:37,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:54:37,900 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:54:37,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:54:37" (1/1) ... [2021-12-06 21:54:37,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:54:37" (1/1) ... [2021-12-06 21:54:37,922 INFO L137 Inliner]: procedures = 7, calls = 29, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 61 [2021-12-06 21:54:37,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:54:37,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:54:37,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:54:37,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:54:37,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:54:37" (1/1) ... [2021-12-06 21:54:37,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:54:37" (1/1) ... [2021-12-06 21:54:37,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:54:37" (1/1) ... [2021-12-06 21:54:37,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:54:37" (1/1) ... [2021-12-06 21:54:37,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:54:37" (1/1) ... [2021-12-06 21:54:37,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:54:37" (1/1) ... [2021-12-06 21:54:37,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:54:37" (1/1) ... [2021-12-06 21:54:37,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:54:37,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:54:37,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:54:37,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:54:37,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:54:37" (1/1) ... [2021-12-06 21:54:37,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:37,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:37,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:37,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-06 21:54:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 21:54:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:54:38,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:54:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 21:54:38,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 21:54:38,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 21:54:38,052 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:54:38,053 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:54:38,178 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:54:38,183 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:54:38,183 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 21:54:38,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:54:38 BoogieIcfgContainer [2021-12-06 21:54:38,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:54:38,185 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-06 21:54:38,185 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-06 21:54:38,188 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-06 21:54:38,188 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 21:54:38,188 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.12 09:54:37" (1/3) ... [2021-12-06 21:54:38,189 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58609bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 09:54:38, skipping insertion in model container [2021-12-06 21:54:38,189 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 21:54:38,189 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:54:37" (2/3) ... [2021-12-06 21:54:38,190 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58609bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 09:54:38, skipping insertion in model container [2021-12-06 21:54:38,190 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 21:54:38,190 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:54:38" (3/3) ... [2021-12-06 21:54:38,191 INFO L388 chiAutomizerObserver]: Analyzing ICFG 4BitCounterPointer.c [2021-12-06 21:54:38,221 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-06 21:54:38,222 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-06 21:54:38,222 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-06 21:54:38,222 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-06 21:54:38,222 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-06 21:54:38,222 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-06 21:54:38,222 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-06 21:54:38,222 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-06 21:54:38,232 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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) [2021-12-06 21:54:38,244 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-06 21:54:38,244 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 21:54:38,244 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 21:54:38,249 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 21:54:38,249 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-06 21:54:38,249 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-06 21:54:38,249 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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) [2021-12-06 21:54:38,250 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-06 21:54:38,250 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 21:54:38,250 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 21:54:38,251 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 21:54:38,251 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-06 21:54:38,255 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; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc0#1.base, main_#t~malloc0#1.offset, main_#t~malloc1#1.base, main_#t~malloc1#1.offset, main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~mem5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem4#1, main_~x0~0#1.base, main_~x0~0#1.offset, main_~x1~0#1.base, main_~x1~0#1.offset, main_~x2~0#1.base, main_~x2~0#1.offset, main_~x3~0#1.base, main_~x3~0#1.offset;call main_#t~malloc0#1.base, main_#t~malloc0#1.offset := #Ultimate.allocOnStack(4);main_~x0~0#1.base, main_~x0~0#1.offset := main_#t~malloc0#1.base, main_#t~malloc0#1.offset;call main_#t~malloc1#1.base, main_#t~malloc1#1.offset := #Ultimate.allocOnStack(4);main_~x1~0#1.base, main_~x1~0#1.offset := main_#t~malloc1#1.base, main_#t~malloc1#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~x2~0#1.base, main_~x2~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~x3~0#1.base, main_~x3~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call write~int(0, main_~x1~0#1.base, main_~x1~0#1.offset, 4);call write~int(0, main_~x2~0#1.base, main_~x2~0#1.offset, 4);call write~int(0, main_~x3~0#1.base, main_~x3~0#1.offset, 4); 6#L24-2true [2021-12-06 21:54:38,256 INFO L793 eck$LassoCheckResult]: Loop: 6#L24-2true call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 9#L15-1true assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 3#L16true assume 0 == main_#t~mem5#1;havoc main_#t~mem5#1;call write~int(1, main_~x0~0#1.base, main_~x0~0#1.offset, 4); 6#L24-2true [2021-12-06 21:54:38,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:38,260 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-06 21:54:38,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:38,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127187870] [2021-12-06 21:54:38,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:38,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:38,403 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:54:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:38,441 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:54:38,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:38,443 INFO L85 PathProgramCache]: Analyzing trace with hash 36905, now seen corresponding path program 1 times [2021-12-06 21:54:38,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:38,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195460911] [2021-12-06 21:54:38,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:38,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:38,451 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:54:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:38,457 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:54:38,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:38,458 INFO L85 PathProgramCache]: Analyzing trace with hash 28695847, now seen corresponding path program 1 times [2021-12-06 21:54:38,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:38,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128589365] [2021-12-06 21:54:38,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:38,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:38,507 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:54:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:38,529 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:54:39,651 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 21:54:39,652 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 21:54:39,652 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 21:54:39,652 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 21:54:39,652 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 21:54:39,652 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:39,652 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 21:54:39,652 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 21:54:39,652 INFO L133 ssoRankerPreferences]: Filename of dumped script: 4BitCounterPointer.c_Iteration1_Lasso [2021-12-06 21:54:39,652 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 21:54:39,653 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 21:54:39,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:39,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:40,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:40,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:40,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:40,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:40,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:40,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:40,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:40,064 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:40,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:40,316 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 21:54:40,319 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 21:54:40,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:40,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:40,321 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:40,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-06 21:54:40,323 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 [2021-12-06 21:54:40,330 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:40,330 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 21:54:40,331 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:40,331 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:40,331 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:40,333 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 21:54:40,333 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 21:54:40,334 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:40,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-06 21:54:40,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:40,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:40,354 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:40,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-06 21:54:40,355 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 [2021-12-06 21:54:40,362 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:40,362 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:40,362 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:40,363 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:40,367 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:40,367 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:40,373 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:40,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-06 21:54:40,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:40,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:40,393 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:40,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-06 21:54:40,394 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 [2021-12-06 21:54:40,401 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:40,401 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:40,401 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:40,401 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:40,404 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:40,404 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:40,407 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:40,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-06 21:54:40,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:40,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:40,426 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:40,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-06 21:54:40,427 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 [2021-12-06 21:54:40,434 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:40,434 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:40,434 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:40,434 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:40,436 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:40,436 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:40,439 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:40,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-06 21:54:40,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:40,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:40,458 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:40,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-06 21:54:40,459 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 [2021-12-06 21:54:40,466 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:40,466 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:40,466 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:40,466 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:40,469 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:40,469 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:40,473 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:40,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-06 21:54:40,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:40,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:40,495 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:40,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-06 21:54:40,496 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 [2021-12-06 21:54:40,503 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:40,503 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:40,503 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:40,503 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:40,506 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:40,506 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:40,511 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:40,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-06 21:54:40,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:40,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:40,531 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:40,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-06 21:54:40,532 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 [2021-12-06 21:54:40,538 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:40,538 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:40,539 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:40,539 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:40,540 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:40,540 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:40,543 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:40,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-06 21:54:40,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:40,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:40,562 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:40,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-06 21:54:40,563 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 [2021-12-06 21:54:40,570 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:40,570 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:40,570 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:40,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:40,572 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:40,572 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:40,576 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:40,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-06 21:54:40,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:40,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:40,596 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:40,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-06 21:54:40,597 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 [2021-12-06 21:54:40,604 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:40,604 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:40,604 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:40,604 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:40,610 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:40,610 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:40,619 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:40,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-12-06 21:54:40,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:40,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:40,642 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:40,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-06 21:54:40,643 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 [2021-12-06 21:54:40,650 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:40,650 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:40,651 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:40,651 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:40,653 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:40,653 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:40,656 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:40,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2021-12-06 21:54:40,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:40,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:40,677 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:40,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-06 21:54:40,678 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 21:54:40,685 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:40,685 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:40,685 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:40,685 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:40,687 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:40,688 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:40,691 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:40,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-12-06 21:54:40,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:40,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:40,711 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:40,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-06 21:54:40,717 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 [2021-12-06 21:54:40,724 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:40,724 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:40,724 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:40,724 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:40,728 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:40,728 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:40,736 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:40,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-12-06 21:54:40,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:40,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:40,755 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:40,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-06 21:54:40,759 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 [2021-12-06 21:54:40,767 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:40,767 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:40,767 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:40,767 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:40,769 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:40,769 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:40,772 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 21:54:40,780 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2021-12-06 21:54:40,780 INFO L444 ModelExtractionUtils]: 2 out of 7 variables were initially zero. Simplification set additionally 2 variables to zero. [2021-12-06 21:54:40,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:40,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:40,782 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:40,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-06 21:54:40,783 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 21:54:40,793 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-12-06 21:54:40,793 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 21:54:40,794 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~x0~0#1.base) ULTIMATE.start_main_~x0~0#1.offset)_1) = -2*v_rep(select (select #memory_int ULTIMATE.start_main_~x0~0#1.base) ULTIMATE.start_main_~x0~0#1.offset)_1 + 1 Supporting invariants [] [2021-12-06 21:54:40,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-12-06 21:54:40,913 INFO L297 tatePredicateManager]: 36 out of 36 supporting invariants were superfluous and have been removed [2021-12-06 21:54:40,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:40,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 21:54:40,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:54:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:40,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 21:54:40,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:54:40,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:54:41,013 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 [2021-12-06 21:54:41,015 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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) [2021-12-06 21:54:41,053 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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 29 states and 36 transitions. Complement of second has 8 states. [2021-12-06 21:54:41,055 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 [2021-12-06 21:54:41,060 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) [2021-12-06 21:54:41,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2021-12-06 21:54:41,062 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 2 letters. Loop has 3 letters. [2021-12-06 21:54:41,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 21:54:41,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-06 21:54:41,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 21:54:41,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 2 letters. Loop has 6 letters. [2021-12-06 21:54:41,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 21:54:41,064 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2021-12-06 21:54:41,066 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-06 21:54:41,070 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 13 states and 18 transitions. [2021-12-06 21:54:41,071 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-12-06 21:54:41,071 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-12-06 21:54:41,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2021-12-06 21:54:41,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 21:54:41,072 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2021-12-06 21:54:41,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2021-12-06 21:54:41,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-06 21:54:41,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 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) [2021-12-06 21:54:41,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2021-12-06 21:54:41,095 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2021-12-06 21:54:41,095 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2021-12-06 21:54:41,095 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-06 21:54:41,095 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 18 transitions. [2021-12-06 21:54:41,096 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-06 21:54:41,096 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 21:54:41,096 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 21:54:41,096 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-06 21:54:41,096 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-06 21:54:41,097 INFO L791 eck$LassoCheckResult]: Stem: 231#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 232#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc0#1.base, main_#t~malloc0#1.offset, main_#t~malloc1#1.base, main_#t~malloc1#1.offset, main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~mem5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem4#1, main_~x0~0#1.base, main_~x0~0#1.offset, main_~x1~0#1.base, main_~x1~0#1.offset, main_~x2~0#1.base, main_~x2~0#1.offset, main_~x3~0#1.base, main_~x3~0#1.offset;call main_#t~malloc0#1.base, main_#t~malloc0#1.offset := #Ultimate.allocOnStack(4);main_~x0~0#1.base, main_~x0~0#1.offset := main_#t~malloc0#1.base, main_#t~malloc0#1.offset;call main_#t~malloc1#1.base, main_#t~malloc1#1.offset := #Ultimate.allocOnStack(4);main_~x1~0#1.base, main_~x1~0#1.offset := main_#t~malloc1#1.base, main_#t~malloc1#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~x2~0#1.base, main_~x2~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~x3~0#1.base, main_~x3~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call write~int(0, main_~x1~0#1.base, main_~x1~0#1.offset, 4);call write~int(0, main_~x2~0#1.base, main_~x2~0#1.offset, 4);call write~int(0, main_~x3~0#1.base, main_~x3~0#1.offset, 4); 237#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 236#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 227#L16 assume !(0 == main_#t~mem5#1);havoc main_#t~mem5#1;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call main_#t~mem6#1 := read~int(main_~x1~0#1.base, main_~x1~0#1.offset, 4); 228#L20 [2021-12-06 21:54:41,097 INFO L793 eck$LassoCheckResult]: Loop: 228#L20 assume 0 == main_#t~mem6#1;havoc main_#t~mem6#1;call write~int(1, main_~x1~0#1.base, main_~x1~0#1.offset, 4); 233#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 234#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 239#L16 assume !(0 == main_#t~mem5#1);havoc main_#t~mem5#1;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call main_#t~mem6#1 := read~int(main_~x1~0#1.base, main_~x1~0#1.offset, 4); 228#L20 [2021-12-06 21:54:41,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:41,097 INFO L85 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 1 times [2021-12-06 21:54:41,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:41,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136026483] [2021-12-06 21:54:41,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:41,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:41,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:54:41,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:54:41,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136026483] [2021-12-06 21:54:41,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136026483] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:54:41,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:54:41,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:54:41,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123720429] [2021-12-06 21:54:41,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:54:41,212 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-06 21:54:41,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:41,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1526457, now seen corresponding path program 1 times [2021-12-06 21:54:41,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:41,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477029777] [2021-12-06 21:54:41,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:41,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:41,219 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:54:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:41,226 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:54:41,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:54:41,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:54:41,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:54:41,329 INFO L87 Difference]: Start difference. First operand 13 states and 18 transitions. cyclomatic complexity: 7 Second operand has 4 states, 3 states have (on average 1.6666666666666667) 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) [2021-12-06 21:54:41,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:54:41,357 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2021-12-06 21:54:41,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 21:54:41,358 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2021-12-06 21:54:41,359 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-06 21:54:41,359 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 15 states and 19 transitions. [2021-12-06 21:54:41,360 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-12-06 21:54:41,360 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-12-06 21:54:41,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 19 transitions. [2021-12-06 21:54:41,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 21:54:41,360 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2021-12-06 21:54:41,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 19 transitions. [2021-12-06 21:54:41,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2021-12-06 21:54:41,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 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) [2021-12-06 21:54:41,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2021-12-06 21:54:41,362 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-12-06 21:54:41,362 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-12-06 21:54:41,362 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-06 21:54:41,362 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2021-12-06 21:54:41,363 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-06 21:54:41,363 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 21:54:41,363 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 21:54:41,363 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-12-06 21:54:41,363 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-06 21:54:41,363 INFO L791 eck$LassoCheckResult]: Stem: 270#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 271#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc0#1.base, main_#t~malloc0#1.offset, main_#t~malloc1#1.base, main_#t~malloc1#1.offset, main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~mem5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem4#1, main_~x0~0#1.base, main_~x0~0#1.offset, main_~x1~0#1.base, main_~x1~0#1.offset, main_~x2~0#1.base, main_~x2~0#1.offset, main_~x3~0#1.base, main_~x3~0#1.offset;call main_#t~malloc0#1.base, main_#t~malloc0#1.offset := #Ultimate.allocOnStack(4);main_~x0~0#1.base, main_~x0~0#1.offset := main_#t~malloc0#1.base, main_#t~malloc0#1.offset;call main_#t~malloc1#1.base, main_#t~malloc1#1.offset := #Ultimate.allocOnStack(4);main_~x1~0#1.base, main_~x1~0#1.offset := main_#t~malloc1#1.base, main_#t~malloc1#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~x2~0#1.base, main_~x2~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~x3~0#1.base, main_~x3~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call write~int(0, main_~x1~0#1.base, main_~x1~0#1.offset, 4);call write~int(0, main_~x2~0#1.base, main_~x2~0#1.offset, 4);call write~int(0, main_~x3~0#1.base, main_~x3~0#1.offset, 4); 272#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 273#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 268#L16 assume 0 == main_#t~mem5#1;havoc main_#t~mem5#1;call write~int(1, main_~x0~0#1.base, main_~x0~0#1.offset, 4); 269#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 274#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 266#L16 assume !(0 == main_#t~mem5#1);havoc main_#t~mem5#1;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call main_#t~mem6#1 := read~int(main_~x1~0#1.base, main_~x1~0#1.offset, 4); 267#L20 [2021-12-06 21:54:41,363 INFO L793 eck$LassoCheckResult]: Loop: 267#L20 assume 0 == main_#t~mem6#1;havoc main_#t~mem6#1;call write~int(1, main_~x1~0#1.base, main_~x1~0#1.offset, 4); 275#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 277#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 278#L16 assume !(0 == main_#t~mem5#1);havoc main_#t~mem5#1;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call main_#t~mem6#1 := read~int(main_~x1~0#1.base, main_~x1~0#1.offset, 4); 267#L20 [2021-12-06 21:54:41,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:41,364 INFO L85 PathProgramCache]: Analyzing trace with hash 179493189, now seen corresponding path program 1 times [2021-12-06 21:54:41,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:41,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978275765] [2021-12-06 21:54:41,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:41,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:41,394 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:54:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:41,411 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:54:41,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:41,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1526457, now seen corresponding path program 2 times [2021-12-06 21:54:41,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:41,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334951885] [2021-12-06 21:54:41,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:41,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:41,416 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:54:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:41,420 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:54:41,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:41,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1467212285, now seen corresponding path program 1 times [2021-12-06 21:54:41,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:41,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630845938] [2021-12-06 21:54:41,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:41,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:41,483 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:54:41,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:54:41,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630845938] [2021-12-06 21:54:41,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630845938] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:54:41,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132746318] [2021-12-06 21:54:41,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:41,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:54:41,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:41,485 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:54:41,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 21:54:41,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-12-06 21:54:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:41,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 21:54:41,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:54:41,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 21:54:41,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 21:54:41,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 21:54:41,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 21:54:41,621 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 21:54:41,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:54:41,635 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_351 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x1~0#1.base| v_ArrVal_351) |c_ULTIMATE.start_main_~x0~0#1.base|) |c_ULTIMATE.start_main_~x0~0#1.offset|) 0)) is different from false [2021-12-06 21:54:41,645 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:54:41,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-12-06 21:54:41,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-12-06 21:54:41,664 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 21:54:41,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132746318] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:54:41,664 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:54:41,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 8 [2021-12-06 21:54:41,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527958693] [2021-12-06 21:54:41,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:54:41,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:54:41,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:54:41,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=36, Unknown=1, NotChecked=12, Total=72 [2021-12-06 21:54:41,763 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. cyclomatic complexity: 6 Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:54:41,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:54:41,797 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2021-12-06 21:54:41,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:54:41,798 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 22 transitions. [2021-12-06 21:54:41,799 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-06 21:54:41,799 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 22 transitions. [2021-12-06 21:54:41,799 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-12-06 21:54:41,800 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-12-06 21:54:41,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 22 transitions. [2021-12-06 21:54:41,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 21:54:41,800 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-12-06 21:54:41,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 22 transitions. [2021-12-06 21:54:41,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2021-12-06 21:54:41,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 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) [2021-12-06 21:54:41,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-12-06 21:54:41,801 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-12-06 21:54:41,801 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-12-06 21:54:41,802 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-06 21:54:41,802 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 20 transitions. [2021-12-06 21:54:41,802 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-06 21:54:41,802 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 21:54:41,802 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 21:54:41,802 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-12-06 21:54:41,802 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-12-06 21:54:41,803 INFO L791 eck$LassoCheckResult]: Stem: 384#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 385#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc0#1.base, main_#t~malloc0#1.offset, main_#t~malloc1#1.base, main_#t~malloc1#1.offset, main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~mem5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem4#1, main_~x0~0#1.base, main_~x0~0#1.offset, main_~x1~0#1.base, main_~x1~0#1.offset, main_~x2~0#1.base, main_~x2~0#1.offset, main_~x3~0#1.base, main_~x3~0#1.offset;call main_#t~malloc0#1.base, main_#t~malloc0#1.offset := #Ultimate.allocOnStack(4);main_~x0~0#1.base, main_~x0~0#1.offset := main_#t~malloc0#1.base, main_#t~malloc0#1.offset;call main_#t~malloc1#1.base, main_#t~malloc1#1.offset := #Ultimate.allocOnStack(4);main_~x1~0#1.base, main_~x1~0#1.offset := main_#t~malloc1#1.base, main_#t~malloc1#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~x2~0#1.base, main_~x2~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~x3~0#1.base, main_~x3~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call write~int(0, main_~x1~0#1.base, main_~x1~0#1.offset, 4);call write~int(0, main_~x2~0#1.base, main_~x2~0#1.offset, 4);call write~int(0, main_~x3~0#1.base, main_~x3~0#1.offset, 4); 390#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 387#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 382#L16 assume 0 == main_#t~mem5#1;havoc main_#t~mem5#1;call write~int(1, main_~x0~0#1.base, main_~x0~0#1.offset, 4); 383#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 388#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 394#L16 assume !(0 == main_#t~mem5#1);havoc main_#t~mem5#1;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call main_#t~mem6#1 := read~int(main_~x1~0#1.base, main_~x1~0#1.offset, 4); 391#L20 [2021-12-06 21:54:41,803 INFO L793 eck$LassoCheckResult]: Loop: 391#L20 assume !(0 == main_#t~mem6#1);havoc main_#t~mem6#1;call write~int(0, main_~x1~0#1.base, main_~x1~0#1.offset, 4);call main_#t~mem7#1 := read~int(main_~x2~0#1.base, main_~x2~0#1.offset, 4); 393#L24 assume 0 == main_#t~mem7#1;havoc main_#t~mem7#1;call write~int(1, main_~x2~0#1.base, main_~x2~0#1.offset, 4); 381#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 386#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 395#L16 assume !(0 == main_#t~mem5#1);havoc main_#t~mem5#1;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call main_#t~mem6#1 := read~int(main_~x1~0#1.base, main_~x1~0#1.offset, 4); 391#L20 [2021-12-06 21:54:41,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:41,803 INFO L85 PathProgramCache]: Analyzing trace with hash 179493189, now seen corresponding path program 2 times [2021-12-06 21:54:41,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:41,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826696988] [2021-12-06 21:54:41,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:41,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:41,821 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:54:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:41,834 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:54:41,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:41,834 INFO L85 PathProgramCache]: Analyzing trace with hash 49698504, now seen corresponding path program 1 times [2021-12-06 21:54:41,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:41,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346179235] [2021-12-06 21:54:41,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:41,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:41,840 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:54:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:41,845 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:54:41,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:41,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1758681084, now seen corresponding path program 1 times [2021-12-06 21:54:41,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:41,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438528991] [2021-12-06 21:54:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:41,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:41,944 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:54:41,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:54:41,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438528991] [2021-12-06 21:54:41,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438528991] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:54:41,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443203815] [2021-12-06 21:54:41,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:41,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:54:41,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:41,945 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:54:41,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 21:54:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:42,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-06 21:54:42,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:54:42,082 INFO L354 Elim1Store]: treesize reduction 150, result has 34.5 percent of original size [2021-12-06 21:54:42,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 48 treesize of output 105 [2021-12-06 21:54:42,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2021-12-06 21:54:42,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2021-12-06 21:54:42,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 21:54:42,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 21:54:42,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 21:54:42,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 21:54:42,219 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-12-06 21:54:42,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 44 [2021-12-06 21:54:42,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 21:54:42,290 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 21:54:42,349 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 21:54:42,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2021-12-06 21:54:42,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 21:54:42,497 INFO L354 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2021-12-06 21:54:42,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 47 [2021-12-06 21:54:42,569 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-12-06 21:54:42,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 51 [2021-12-06 21:54:42,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-12-06 21:54:42,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 21:54:42,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 21:54:42,654 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:54:42,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:54:42,671 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_524 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x2~0#1.base| v_ArrVal_524) |c_ULTIMATE.start_main_~x0~0#1.base|) |c_ULTIMATE.start_main_~x0~0#1.offset|) 0)) is different from false [2021-12-06 21:54:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:54:42,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443203815] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:54:42,861 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:54:42,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 21 [2021-12-06 21:54:42,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386734040] [2021-12-06 21:54:42,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:54:42,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:54:42,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 21:54:42,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=306, Unknown=14, NotChecked=36, Total=420 [2021-12-06 21:54:42,990 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. cyclomatic complexity: 6 Second operand has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:54:43,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:54:43,167 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2021-12-06 21:54:43,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:54:43,168 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 23 transitions. [2021-12-06 21:54:43,168 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-06 21:54:43,169 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 19 states and 23 transitions. [2021-12-06 21:54:43,169 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-12-06 21:54:43,169 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-12-06 21:54:43,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 23 transitions. [2021-12-06 21:54:43,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 21:54:43,169 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-12-06 21:54:43,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 23 transitions. [2021-12-06 21:54:43,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-12-06 21:54:43,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:54:43,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-12-06 21:54:43,171 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-12-06 21:54:43,171 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-12-06 21:54:43,171 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-06 21:54:43,171 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2021-12-06 21:54:43,171 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-06 21:54:43,171 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 21:54:43,171 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 21:54:43,171 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2021-12-06 21:54:43,172 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1] [2021-12-06 21:54:43,172 INFO L791 eck$LassoCheckResult]: Stem: 530#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 531#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc0#1.base, main_#t~malloc0#1.offset, main_#t~malloc1#1.base, main_#t~malloc1#1.offset, main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~mem5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem4#1, main_~x0~0#1.base, main_~x0~0#1.offset, main_~x1~0#1.base, main_~x1~0#1.offset, main_~x2~0#1.base, main_~x2~0#1.offset, main_~x3~0#1.base, main_~x3~0#1.offset;call main_#t~malloc0#1.base, main_#t~malloc0#1.offset := #Ultimate.allocOnStack(4);main_~x0~0#1.base, main_~x0~0#1.offset := main_#t~malloc0#1.base, main_#t~malloc0#1.offset;call main_#t~malloc1#1.base, main_#t~malloc1#1.offset := #Ultimate.allocOnStack(4);main_~x1~0#1.base, main_~x1~0#1.offset := main_#t~malloc1#1.base, main_#t~malloc1#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~x2~0#1.base, main_~x2~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~x3~0#1.base, main_~x3~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call write~int(0, main_~x1~0#1.base, main_~x1~0#1.offset, 4);call write~int(0, main_~x2~0#1.base, main_~x2~0#1.offset, 4);call write~int(0, main_~x3~0#1.base, main_~x3~0#1.offset, 4); 532#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 533#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 528#L16 assume 0 == main_#t~mem5#1;havoc main_#t~mem5#1;call write~int(1, main_~x0~0#1.base, main_~x0~0#1.offset, 4); 529#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 534#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 541#L16 assume !(0 == main_#t~mem5#1);havoc main_#t~mem5#1;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call main_#t~mem6#1 := read~int(main_~x1~0#1.base, main_~x1~0#1.offset, 4); 536#L20 assume 0 == main_#t~mem6#1;havoc main_#t~mem6#1;call write~int(1, main_~x1~0#1.base, main_~x1~0#1.offset, 4); 537#L24-2 [2021-12-06 21:54:43,172 INFO L793 eck$LassoCheckResult]: Loop: 537#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 535#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 526#L16 assume 0 == main_#t~mem5#1;havoc main_#t~mem5#1;call write~int(1, main_~x0~0#1.base, main_~x0~0#1.offset, 4); 527#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 542#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 540#L16 assume !(0 == main_#t~mem5#1);havoc main_#t~mem5#1;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call main_#t~mem6#1 := read~int(main_~x1~0#1.base, main_~x1~0#1.offset, 4); 539#L20 assume 0 == main_#t~mem6#1;havoc main_#t~mem6#1;call write~int(1, main_~x1~0#1.base, main_~x1~0#1.offset, 4); 537#L24-2 [2021-12-06 21:54:43,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:43,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1269321583, now seen corresponding path program 2 times [2021-12-06 21:54:43,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:43,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659839052] [2021-12-06 21:54:43,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:43,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:43,191 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:54:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:43,202 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:54:43,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:43,202 INFO L85 PathProgramCache]: Analyzing trace with hash -276975247, now seen corresponding path program 1 times [2021-12-06 21:54:43,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:43,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887310043] [2021-12-06 21:54:43,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:43,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:43,207 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:54:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:43,212 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:54:43,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:43,213 INFO L85 PathProgramCache]: Analyzing trace with hash -697316797, now seen corresponding path program 3 times [2021-12-06 21:54:43,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:43,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595671687] [2021-12-06 21:54:43,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:43,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:43,269 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 21:54:43,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:54:43,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595671687] [2021-12-06 21:54:43,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595671687] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:54:43,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393493052] [2021-12-06 21:54:43,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 21:54:43,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:54:43,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:43,302 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:54:43,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 21:54:43,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 21:54:43,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:54:43,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 21:54:43,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:54:43,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 21:54:43,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 21:54:43,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 21:54:43,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:54:43,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 21:54:43,441 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 21:54:43,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:54:43,446 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_698 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x0~0#1.base| v_ArrVal_698) |c_ULTIMATE.start_main_~x1~0#1.base|) |c_ULTIMATE.start_main_~x1~0#1.offset|) 0))) is different from false [2021-12-06 21:54:43,459 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:54:43,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2021-12-06 21:54:43,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2021-12-06 21:54:43,470 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 12 not checked. [2021-12-06 21:54:43,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393493052] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:54:43,470 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:54:43,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2021-12-06 21:54:43,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700061057] [2021-12-06 21:54:43,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:54:43,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:54:43,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:54:43,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=52, Unknown=1, NotChecked=14, Total=90 [2021-12-06 21:54:43,590 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. cyclomatic complexity: 6 Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 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) [2021-12-06 21:54:43,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:54:43,656 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-12-06 21:54:43,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:54:43,657 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 29 transitions. [2021-12-06 21:54:43,657 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2021-12-06 21:54:43,658 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 27 transitions. [2021-12-06 21:54:43,658 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2021-12-06 21:54:43,658 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-12-06 21:54:43,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 27 transitions. [2021-12-06 21:54:43,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:54:43,658 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-12-06 21:54:43,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 27 transitions. [2021-12-06 21:54:43,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-12-06 21:54:43,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.125) internal successors, (27), 23 states have internal predecessors, (27), 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) [2021-12-06 21:54:43,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-12-06 21:54:43,660 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-12-06 21:54:43,660 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-12-06 21:54:43,660 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-06 21:54:43,660 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 27 transitions. [2021-12-06 21:54:43,661 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2021-12-06 21:54:43,661 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 21:54:43,661 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 21:54:43,661 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2021-12-06 21:54:43,661 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 2, 1, 1, 1, 1] [2021-12-06 21:54:43,661 INFO L791 eck$LassoCheckResult]: Stem: 685#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 686#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc0#1.base, main_#t~malloc0#1.offset, main_#t~malloc1#1.base, main_#t~malloc1#1.offset, main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~mem5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem4#1, main_~x0~0#1.base, main_~x0~0#1.offset, main_~x1~0#1.base, main_~x1~0#1.offset, main_~x2~0#1.base, main_~x2~0#1.offset, main_~x3~0#1.base, main_~x3~0#1.offset;call main_#t~malloc0#1.base, main_#t~malloc0#1.offset := #Ultimate.allocOnStack(4);main_~x0~0#1.base, main_~x0~0#1.offset := main_#t~malloc0#1.base, main_#t~malloc0#1.offset;call main_#t~malloc1#1.base, main_#t~malloc1#1.offset := #Ultimate.allocOnStack(4);main_~x1~0#1.base, main_~x1~0#1.offset := main_#t~malloc1#1.base, main_#t~malloc1#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~x2~0#1.base, main_~x2~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~x3~0#1.base, main_~x3~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call write~int(0, main_~x1~0#1.base, main_~x1~0#1.offset, 4);call write~int(0, main_~x2~0#1.base, main_~x2~0#1.offset, 4);call write~int(0, main_~x3~0#1.base, main_~x3~0#1.offset, 4); 690#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 700#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 699#L16 assume 0 == main_#t~mem5#1;havoc main_#t~mem5#1;call write~int(1, main_~x0~0#1.base, main_~x0~0#1.offset, 4); 698#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 697#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 696#L16 assume !(0 == main_#t~mem5#1);havoc main_#t~mem5#1;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call main_#t~mem6#1 := read~int(main_~x1~0#1.base, main_~x1~0#1.offset, 4); 691#L20 assume 0 == main_#t~mem6#1;havoc main_#t~mem6#1;call write~int(1, main_~x1~0#1.base, main_~x1~0#1.offset, 4); 692#L24-2 [2021-12-06 21:54:43,661 INFO L793 eck$LassoCheckResult]: Loop: 692#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 702#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 683#L16 assume 0 == main_#t~mem5#1;havoc main_#t~mem5#1;call write~int(1, main_~x0~0#1.base, main_~x0~0#1.offset, 4); 684#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 704#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 703#L16 assume !(0 == main_#t~mem5#1);havoc main_#t~mem5#1;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call main_#t~mem6#1 := read~int(main_~x1~0#1.base, main_~x1~0#1.offset, 4); 695#L20 assume !(0 == main_#t~mem6#1);havoc main_#t~mem6#1;call write~int(0, main_~x1~0#1.base, main_~x1~0#1.offset, 4);call main_#t~mem7#1 := read~int(main_~x2~0#1.base, main_~x2~0#1.offset, 4); 693#L24 assume 0 == main_#t~mem7#1;havoc main_#t~mem7#1;call write~int(1, main_~x2~0#1.base, main_~x2~0#1.offset, 4); 694#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 706#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 705#L16 assume !(0 == main_#t~mem5#1);havoc main_#t~mem5#1;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call main_#t~mem6#1 := read~int(main_~x1~0#1.base, main_~x1~0#1.offset, 4); 701#L20 assume 0 == main_#t~mem6#1;havoc main_#t~mem6#1;call write~int(1, main_~x1~0#1.base, main_~x1~0#1.offset, 4); 692#L24-2 [2021-12-06 21:54:43,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:43,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1269321583, now seen corresponding path program 4 times [2021-12-06 21:54:43,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:43,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649260832] [2021-12-06 21:54:43,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:43,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:43,688 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:54:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:43,703 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:54:43,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:43,703 INFO L85 PathProgramCache]: Analyzing trace with hash 101312462, now seen corresponding path program 1 times [2021-12-06 21:54:43,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:43,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892672257] [2021-12-06 21:54:43,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:43,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:43,715 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:54:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:43,726 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:54:43,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:43,727 INFO L85 PathProgramCache]: Analyzing trace with hash 16810556, now seen corresponding path program 1 times [2021-12-06 21:54:43,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:43,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021005749] [2021-12-06 21:54:43,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:43,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 21:54:43,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:54:43,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021005749] [2021-12-06 21:54:43,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021005749] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:54:43,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707171309] [2021-12-06 21:54:43,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:43,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:54:43,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:43,866 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:54:43,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 21:54:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:43,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-06 21:54:43,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:54:43,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2021-12-06 21:54:44,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 21:54:44,074 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:54:44,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-12-06 21:54:44,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 21:54:44,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 21:54:44,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 21:54:44,224 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 21:54:44,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:54:44,237 WARN L838 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_main_#t~mem5#1| 0) (forall ((v_ArrVal_894 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x0~0#1.base| v_ArrVal_894) |c_ULTIMATE.start_main_~x1~0#1.base|) |c_ULTIMATE.start_main_~x1~0#1.offset|) 0)))) is different from false [2021-12-06 21:54:44,243 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_894 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x0~0#1.base| v_ArrVal_894) |c_ULTIMATE.start_main_~x1~0#1.base|) |c_ULTIMATE.start_main_~x1~0#1.offset|) 0))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~x0~0#1.base|) |c_ULTIMATE.start_main_~x0~0#1.offset|) 0)) is different from false [2021-12-06 21:54:44,255 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_894 (Array Int Int))) (not (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x2~0#1.base|) |c_ULTIMATE.start_main_~x2~0#1.offset| 1)) |c_ULTIMATE.start_main_~x0~0#1.base| v_ArrVal_894) |c_ULTIMATE.start_main_~x1~0#1.base|) |c_ULTIMATE.start_main_~x1~0#1.offset|) 0))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x2~0#1.base|) |c_ULTIMATE.start_main_~x2~0#1.offset| 1)) |c_ULTIMATE.start_main_~x0~0#1.base|) |c_ULTIMATE.start_main_~x0~0#1.offset|) 0)) is different from false [2021-12-06 21:54:44,267 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_891 (Array Int Int)) (v_ArrVal_894 (Array Int Int))) (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~x1~0#1.base| v_ArrVal_891))) (store .cse1 |c_ULTIMATE.start_main_~x2~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~x2~0#1.base|) |c_ULTIMATE.start_main_~x2~0#1.offset| 1))))) (or (not (= (select (select (store .cse0 |c_ULTIMATE.start_main_~x0~0#1.base| v_ArrVal_894) |c_ULTIMATE.start_main_~x1~0#1.base|) |c_ULTIMATE.start_main_~x1~0#1.offset|) 0)) (= (select (select .cse0 |c_ULTIMATE.start_main_~x0~0#1.base|) |c_ULTIMATE.start_main_~x0~0#1.offset|) 0)))) is different from false [2021-12-06 21:54:44,276 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:54:44,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 55 [2021-12-06 21:54:44,283 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:54:44,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 400 treesize of output 394 [2021-12-06 21:54:44,295 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:54:44,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 382 treesize of output 370 [2021-12-06 21:54:44,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 246 treesize of output 230 [2021-12-06 21:54:44,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 85 [2021-12-06 21:54:44,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-12-06 21:54:44,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-12-06 21:54:44,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 21:54:44,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-06 21:54:44,708 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 14 not checked. [2021-12-06 21:54:44,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707171309] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:54:44,709 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:54:44,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 25 [2021-12-06 21:54:44,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445591833] [2021-12-06 21:54:44,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:54:45,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:54:45,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 21:54:45,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=322, Unknown=4, NotChecked=164, Total=600 [2021-12-06 21:54:45,138 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. cyclomatic complexity: 4 Second operand has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 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) [2021-12-06 21:54:45,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:54:45,326 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-12-06 21:54:45,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:54:45,326 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 30 transitions. [2021-12-06 21:54:45,327 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2021-12-06 21:54:45,328 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 27 states and 30 transitions. [2021-12-06 21:54:45,328 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2021-12-06 21:54:45,328 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2021-12-06 21:54:45,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 30 transitions. [2021-12-06 21:54:45,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:54:45,328 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-12-06 21:54:45,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 30 transitions. [2021-12-06 21:54:45,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-06 21:54:45,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 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) [2021-12-06 21:54:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-12-06 21:54:45,330 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-12-06 21:54:45,330 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-12-06 21:54:45,330 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-06 21:54:45,330 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 30 transitions. [2021-12-06 21:54:45,331 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2021-12-06 21:54:45,331 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 21:54:45,331 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 21:54:45,331 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2021-12-06 21:54:45,331 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 2, 1, 1, 1, 1] [2021-12-06 21:54:45,332 INFO L791 eck$LassoCheckResult]: Stem: 903#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 904#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc0#1.base, main_#t~malloc0#1.offset, main_#t~malloc1#1.base, main_#t~malloc1#1.offset, main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~mem5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem4#1, main_~x0~0#1.base, main_~x0~0#1.offset, main_~x1~0#1.base, main_~x1~0#1.offset, main_~x2~0#1.base, main_~x2~0#1.offset, main_~x3~0#1.base, main_~x3~0#1.offset;call main_#t~malloc0#1.base, main_#t~malloc0#1.offset := #Ultimate.allocOnStack(4);main_~x0~0#1.base, main_~x0~0#1.offset := main_#t~malloc0#1.base, main_#t~malloc0#1.offset;call main_#t~malloc1#1.base, main_#t~malloc1#1.offset := #Ultimate.allocOnStack(4);main_~x1~0#1.base, main_~x1~0#1.offset := main_#t~malloc1#1.base, main_#t~malloc1#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~x2~0#1.base, main_~x2~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~x3~0#1.base, main_~x3~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call write~int(0, main_~x1~0#1.base, main_~x1~0#1.offset, 4);call write~int(0, main_~x2~0#1.base, main_~x2~0#1.offset, 4);call write~int(0, main_~x3~0#1.base, main_~x3~0#1.offset, 4); 908#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 918#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 917#L16 assume 0 == main_#t~mem5#1;havoc main_#t~mem5#1;call write~int(1, main_~x0~0#1.base, main_~x0~0#1.offset, 4); 916#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 915#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 914#L16 assume !(0 == main_#t~mem5#1);havoc main_#t~mem5#1;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call main_#t~mem6#1 := read~int(main_~x1~0#1.base, main_~x1~0#1.offset, 4); 909#L20 assume 0 == main_#t~mem6#1;havoc main_#t~mem6#1;call write~int(1, main_~x1~0#1.base, main_~x1~0#1.offset, 4); 910#L24-2 [2021-12-06 21:54:45,332 INFO L793 eck$LassoCheckResult]: Loop: 910#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 921#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 922#L16 assume 0 == main_#t~mem5#1;havoc main_#t~mem5#1;call write~int(1, main_~x0~0#1.base, main_~x0~0#1.offset, 4); 926#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 925#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 924#L16 assume !(0 == main_#t~mem5#1);havoc main_#t~mem5#1;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call main_#t~mem6#1 := read~int(main_~x1~0#1.base, main_~x1~0#1.offset, 4); 913#L20 assume !(0 == main_#t~mem6#1);havoc main_#t~mem6#1;call write~int(0, main_~x1~0#1.base, main_~x1~0#1.offset, 4);call main_#t~mem7#1 := read~int(main_~x2~0#1.base, main_~x2~0#1.offset, 4); 911#L24 assume !(0 == main_#t~mem7#1);havoc main_#t~mem7#1;call write~int(0, main_~x2~0#1.base, main_~x2~0#1.offset, 4);call write~int(1, main_~x3~0#1.base, main_~x3~0#1.offset, 4); 905#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 906#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 907#L16 assume !(0 == main_#t~mem5#1);havoc main_#t~mem5#1;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call main_#t~mem6#1 := read~int(main_~x1~0#1.base, main_~x1~0#1.offset, 4); 920#L20 assume 0 == main_#t~mem6#1;havoc main_#t~mem6#1;call write~int(1, main_~x1~0#1.base, main_~x1~0#1.offset, 4); 910#L24-2 [2021-12-06 21:54:45,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:45,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1269321583, now seen corresponding path program 5 times [2021-12-06 21:54:45,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:45,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964420073] [2021-12-06 21:54:45,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:45,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:45,350 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:54:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:45,364 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:54:45,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:45,364 INFO L85 PathProgramCache]: Analyzing trace with hash 103159504, now seen corresponding path program 1 times [2021-12-06 21:54:45,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:45,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272849667] [2021-12-06 21:54:45,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:45,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:45,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:54:45,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:54:45,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272849667] [2021-12-06 21:54:45,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272849667] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:54:45,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835573597] [2021-12-06 21:54:45,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:45,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:54:45,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:45,391 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:54:45,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 21:54:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:45,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 21:54:45,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:54:45,465 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-12-06 21:54:45,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 51 [2021-12-06 21:54:45,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-06 21:54:45,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-06 21:54:45,526 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 21:54:45,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-06 21:54:45,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 21:54:45,544 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 21:54:45,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:54:45,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835573597] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:54:45,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:54:45,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2021-12-06 21:54:45,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997280109] [2021-12-06 21:54:45,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:54:45,545 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 21:54:45,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:54:45,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:54:45,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:54:45,546 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. cyclomatic complexity: 4 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:54:45,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:54:45,565 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-12-06 21:54:45,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 21:54:45,566 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 27 transitions. [2021-12-06 21:54:45,566 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2021-12-06 21:54:45,567 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 25 transitions. [2021-12-06 21:54:45,567 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-12-06 21:54:45,567 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-12-06 21:54:45,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 25 transitions. [2021-12-06 21:54:45,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:54:45,567 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-12-06 21:54:45,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 25 transitions. [2021-12-06 21:54:45,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-12-06 21:54:45,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 23 states have internal predecessors, (25), 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) [2021-12-06 21:54:45,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-12-06 21:54:45,569 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-12-06 21:54:45,569 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-12-06 21:54:45,569 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-06 21:54:45,569 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 25 transitions. [2021-12-06 21:54:45,569 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2021-12-06 21:54:45,569 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 21:54:45,569 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 21:54:45,570 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2021-12-06 21:54:45,570 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 2, 2, 1, 1, 1] [2021-12-06 21:54:45,570 INFO L791 eck$LassoCheckResult]: Stem: 1002#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 1003#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc0#1.base, main_#t~malloc0#1.offset, main_#t~malloc1#1.base, main_#t~malloc1#1.offset, main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~mem5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem4#1, main_~x0~0#1.base, main_~x0~0#1.offset, main_~x1~0#1.base, main_~x1~0#1.offset, main_~x2~0#1.base, main_~x2~0#1.offset, main_~x3~0#1.base, main_~x3~0#1.offset;call main_#t~malloc0#1.base, main_#t~malloc0#1.offset := #Ultimate.allocOnStack(4);main_~x0~0#1.base, main_~x0~0#1.offset := main_#t~malloc0#1.base, main_#t~malloc0#1.offset;call main_#t~malloc1#1.base, main_#t~malloc1#1.offset := #Ultimate.allocOnStack(4);main_~x1~0#1.base, main_~x1~0#1.offset := main_#t~malloc1#1.base, main_#t~malloc1#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~x2~0#1.base, main_~x2~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~x3~0#1.base, main_~x3~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call write~int(0, main_~x1~0#1.base, main_~x1~0#1.offset, 4);call write~int(0, main_~x2~0#1.base, main_~x2~0#1.offset, 4);call write~int(0, main_~x3~0#1.base, main_~x3~0#1.offset, 4); 1006#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 1015#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 1014#L16 assume 0 == main_#t~mem5#1;havoc main_#t~mem5#1;call write~int(1, main_~x0~0#1.base, main_~x0~0#1.offset, 4); 1013#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 1012#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 1011#L16 assume !(0 == main_#t~mem5#1);havoc main_#t~mem5#1;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call main_#t~mem6#1 := read~int(main_~x1~0#1.base, main_~x1~0#1.offset, 4); 1007#L20 assume 0 == main_#t~mem6#1;havoc main_#t~mem6#1;call write~int(1, main_~x1~0#1.base, main_~x1~0#1.offset, 4); 1008#L24-2 [2021-12-06 21:54:45,570 INFO L793 eck$LassoCheckResult]: Loop: 1008#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 1023#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 1022#L16 assume 0 == main_#t~mem5#1;havoc main_#t~mem5#1;call write~int(1, main_~x0~0#1.base, main_~x0~0#1.offset, 4); 1021#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 1020#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 1019#L16 assume !(0 == main_#t~mem5#1);havoc main_#t~mem5#1;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call main_#t~mem6#1 := read~int(main_~x1~0#1.base, main_~x1~0#1.offset, 4); 1010#L20 assume !(0 == main_#t~mem6#1);havoc main_#t~mem6#1;call write~int(0, main_~x1~0#1.base, main_~x1~0#1.offset, 4);call main_#t~mem7#1 := read~int(main_~x2~0#1.base, main_~x2~0#1.offset, 4); 1009#L24 assume 0 == main_#t~mem7#1;havoc main_#t~mem7#1;call write~int(1, main_~x2~0#1.base, main_~x2~0#1.offset, 4); 1004#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 1005#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 1000#L16 assume 0 == main_#t~mem5#1;havoc main_#t~mem5#1;call write~int(1, main_~x0~0#1.base, main_~x0~0#1.offset, 4); 1001#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 1018#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 1016#L16 assume !(0 == main_#t~mem5#1);havoc main_#t~mem5#1;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call main_#t~mem6#1 := read~int(main_~x1~0#1.base, main_~x1~0#1.offset, 4); 1017#L20 assume 0 == main_#t~mem6#1;havoc main_#t~mem6#1;call write~int(1, main_~x1~0#1.base, main_~x1~0#1.offset, 4); 1008#L24-2 [2021-12-06 21:54:45,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:45,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1269321583, now seen corresponding path program 6 times [2021-12-06 21:54:45,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:45,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175749963] [2021-12-06 21:54:45,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:45,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:45,588 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:54:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:45,601 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:54:45,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:45,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1164675892, now seen corresponding path program 2 times [2021-12-06 21:54:45,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:45,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760109737] [2021-12-06 21:54:45,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:45,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:45,615 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:54:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:45,627 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:54:45,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:45,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1710122082, now seen corresponding path program 2 times [2021-12-06 21:54:45,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:45,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008961533] [2021-12-06 21:54:45,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:45,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:45,667 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:54:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:45,681 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:54:48,298 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 21:54:48,298 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 21:54:48,299 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 21:54:48,299 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 21:54:48,299 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 21:54:48,299 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:48,299 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 21:54:48,299 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 21:54:48,299 INFO L133 ssoRankerPreferences]: Filename of dumped script: 4BitCounterPointer.c_Iteration8_Lasso [2021-12-06 21:54:48,299 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 21:54:48,299 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 21:54:48,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:48,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:48,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:48,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:48,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:48,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:48,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:48,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:48,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:48,311 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:48,993 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 21:54:48,993 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 21:54:48,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:48,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:48,994 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:48,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-06 21:54:48,995 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 [2021-12-06 21:54:49,002 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:49,002 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 21:54:49,002 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:49,002 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:49,002 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:49,003 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 21:54:49,003 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 21:54:49,004 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:49,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-12-06 21:54:49,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:49,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:49,023 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:49,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-12-06 21:54:49,024 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 [2021-12-06 21:54:49,031 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:49,031 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 21:54:49,031 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:49,031 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:49,031 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:49,031 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 21:54:49,031 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 21:54:49,032 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:49,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-12-06 21:54:49,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:49,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:49,052 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:49,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-06 21:54:49,053 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 [2021-12-06 21:54:49,059 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:49,060 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 21:54:49,060 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:49,060 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:49,060 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:49,060 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 21:54:49,060 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 21:54:49,061 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:49,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-12-06 21:54:49,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:49,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:49,080 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:49,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-06 21:54:49,082 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 [2021-12-06 21:54:49,089 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:49,089 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 21:54:49,089 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:49,089 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:49,089 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:49,090 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 21:54:49,090 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 21:54:49,091 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:49,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-12-06 21:54:49,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:49,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:49,110 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:49,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-06 21:54:49,111 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 [2021-12-06 21:54:49,118 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:49,118 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 21:54:49,118 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:49,118 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:49,118 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:49,119 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 21:54:49,119 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 21:54:49,119 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:49,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-12-06 21:54:49,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:49,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:49,139 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:49,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-12-06 21:54:49,140 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 [2021-12-06 21:54:49,147 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:49,147 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:49,147 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:49,147 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:49,148 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:49,148 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:49,150 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:49,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-12-06 21:54:49,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:49,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:49,170 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:49,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-12-06 21:54:49,171 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 [2021-12-06 21:54:49,178 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:49,178 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:49,178 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:49,178 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:49,179 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:49,179 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:49,181 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:49,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-12-06 21:54:49,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:49,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:49,200 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:49,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-12-06 21:54:49,202 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 [2021-12-06 21:54:49,208 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:49,208 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:49,209 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:49,209 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:49,209 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:49,209 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:49,211 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:49,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-12-06 21:54:49,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:49,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:49,231 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:49,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-12-06 21:54:49,232 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 [2021-12-06 21:54:49,240 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:49,240 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:49,240 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:49,240 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:49,241 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:49,241 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:49,244 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:49,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-12-06 21:54:49,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:49,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:49,268 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:49,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-12-06 21:54:49,270 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 [2021-12-06 21:54:49,277 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:49,277 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:49,277 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:49,277 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:49,279 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:49,279 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:49,282 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:49,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-12-06 21:54:49,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:49,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:49,301 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:49,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-12-06 21:54:49,303 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 [2021-12-06 21:54:49,310 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:49,310 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:49,310 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:49,310 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:49,316 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:49,316 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:49,329 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:49,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2021-12-06 21:54:49,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:49,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:49,348 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:49,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-12-06 21:54:49,350 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 [2021-12-06 21:54:49,356 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:49,357 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:49,357 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-06 21:54:49,357 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:49,359 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-12-06 21:54:49,359 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-12-06 21:54:49,367 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:49,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-12-06 21:54:49,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:49,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:49,386 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:49,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-12-06 21:54:49,388 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 [2021-12-06 21:54:49,395 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:49,395 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:49,395 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:49,395 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:49,396 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:49,396 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:49,400 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 21:54:49,408 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2021-12-06 21:54:49,408 INFO L444 ModelExtractionUtils]: 1 out of 7 variables were initially zero. Simplification set additionally 3 variables to zero. [2021-12-06 21:54:49,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:49,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:49,410 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:49,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-12-06 21:54:49,411 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 21:54:49,420 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-12-06 21:54:49,420 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 21:54:49,420 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~x2~0#1.base) ULTIMATE.start_main_~x2~0#1.offset)_2) = -2*v_rep(select (select #memory_int ULTIMATE.start_main_~x2~0#1.base) ULTIMATE.start_main_~x2~0#1.offset)_2 + 1 Supporting invariants [] [2021-12-06 21:54:49,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-12-06 21:54:49,611 INFO L297 tatePredicateManager]: 42 out of 42 supporting invariants were superfluous and have been removed [2021-12-06 21:54:49,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:49,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 21:54:49,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:54:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:49,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-06 21:54:49,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:54:49,694 INFO L354 Elim1Store]: treesize reduction 16, result has 63.6 percent of original size [2021-12-06 21:54:49,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 45 [2021-12-06 21:54:49,756 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-12-06 21:54:49,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 51 [2021-12-06 21:54:49,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-12-06 21:54:49,797 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-12-06 21:54:49,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 51 [2021-12-06 21:54:49,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2021-12-06 21:54:49,937 INFO L354 Elim1Store]: treesize reduction 27, result has 38.6 percent of original size [2021-12-06 21:54:49,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 30 [2021-12-06 21:54:49,986 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-06 21:54:49,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 21:54:50,000 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:54:50,001 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 8 loop predicates [2021-12-06 21:54:50,001 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 25 transitions. cyclomatic complexity: 2 Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:54:50,161 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 25 transitions. cyclomatic complexity: 2. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 39 states and 42 transitions. Complement of second has 22 states. [2021-12-06 21:54:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 1 stem states 10 non-accepting loop states 1 accepting loop states [2021-12-06 21:54:50,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:54:50,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 23 transitions. [2021-12-06 21:54:50,162 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 23 transitions. Stem has 9 letters. Loop has 15 letters. [2021-12-06 21:54:50,162 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 21:54:50,162 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 23 transitions. Stem has 24 letters. Loop has 15 letters. [2021-12-06 21:54:50,163 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 21:54:50,163 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 23 transitions. Stem has 9 letters. Loop has 30 letters. [2021-12-06 21:54:50,163 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 21:54:50,163 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 42 transitions. [2021-12-06 21:54:50,164 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-06 21:54:50,164 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 39 states and 42 transitions. [2021-12-06 21:54:50,164 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2021-12-06 21:54:50,164 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-12-06 21:54:50,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 42 transitions. [2021-12-06 21:54:50,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 21:54:50,165 INFO L681 BuchiCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-12-06 21:54:50,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 42 transitions. [2021-12-06 21:54:50,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2021-12-06 21:54:50,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 32 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:54:50,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2021-12-06 21:54:50,166 INFO L704 BuchiCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-12-06 21:54:50,166 INFO L587 BuchiCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-12-06 21:54:50,166 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-06 21:54:50,167 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 36 transitions. [2021-12-06 21:54:50,167 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-06 21:54:50,167 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 21:54:50,167 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 21:54:50,167 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1] [2021-12-06 21:54:50,167 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1] [2021-12-06 21:54:50,167 INFO L791 eck$LassoCheckResult]: Stem: 1364#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 1365#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc0#1.base, main_#t~malloc0#1.offset, main_#t~malloc1#1.base, main_#t~malloc1#1.offset, main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~mem5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem4#1, main_~x0~0#1.base, main_~x0~0#1.offset, main_~x1~0#1.base, main_~x1~0#1.offset, main_~x2~0#1.base, main_~x2~0#1.offset, main_~x3~0#1.base, main_~x3~0#1.offset;call main_#t~malloc0#1.base, main_#t~malloc0#1.offset := #Ultimate.allocOnStack(4);main_~x0~0#1.base, main_~x0~0#1.offset := main_#t~malloc0#1.base, main_#t~malloc0#1.offset;call main_#t~malloc1#1.base, main_#t~malloc1#1.offset := #Ultimate.allocOnStack(4);main_~x1~0#1.base, main_~x1~0#1.offset := main_#t~malloc1#1.base, main_#t~malloc1#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~x2~0#1.base, main_~x2~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~x3~0#1.base, main_~x3~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call write~int(0, main_~x1~0#1.base, main_~x1~0#1.offset, 4);call write~int(0, main_~x2~0#1.base, main_~x2~0#1.offset, 4);call write~int(0, main_~x3~0#1.base, main_~x3~0#1.offset, 4); 1370#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 1383#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 1382#L16 assume 0 == main_#t~mem5#1;havoc main_#t~mem5#1;call write~int(1, main_~x0~0#1.base, main_~x0~0#1.offset, 4); 1381#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 1380#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 1379#L16 assume !(0 == main_#t~mem5#1);havoc main_#t~mem5#1;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call main_#t~mem6#1 := read~int(main_~x1~0#1.base, main_~x1~0#1.offset, 4); 1371#L20 assume 0 == main_#t~mem6#1;havoc main_#t~mem6#1;call write~int(1, main_~x1~0#1.base, main_~x1~0#1.offset, 4); 1372#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 1367#L15-1 [2021-12-06 21:54:50,168 INFO L793 eck$LassoCheckResult]: Loop: 1367#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 1360#L16 assume 0 == main_#t~mem5#1;havoc main_#t~mem5#1;call write~int(1, main_~x0~0#1.base, main_~x0~0#1.offset, 4); 1361#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 1387#L15-1 assume !!(0 == main_#t~mem4#1);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int(main_~x0~0#1.base, main_~x0~0#1.offset, 4); 1384#L16 assume !(0 == main_#t~mem5#1);havoc main_#t~mem5#1;call write~int(0, main_~x0~0#1.base, main_~x0~0#1.offset, 4);call main_#t~mem6#1 := read~int(main_~x1~0#1.base, main_~x1~0#1.offset, 4); 1376#L20 assume !(0 == main_#t~mem6#1);havoc main_#t~mem6#1;call write~int(0, main_~x1~0#1.base, main_~x1~0#1.offset, 4);call main_#t~mem7#1 := read~int(main_~x2~0#1.base, main_~x2~0#1.offset, 4); 1375#L24 assume 0 == main_#t~mem7#1;havoc main_#t~mem7#1;call write~int(1, main_~x2~0#1.base, main_~x2~0#1.offset, 4); 1366#L24-2 call main_#t~mem4#1 := read~int(main_~x3~0#1.base, main_~x3~0#1.offset, 4); 1367#L15-1 [2021-12-06 21:54:50,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:50,168 INFO L85 PathProgramCache]: Analyzing trace with hash 694263416, now seen corresponding path program 7 times [2021-12-06 21:54:50,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:50,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433315398] [2021-12-06 21:54:50,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:50,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:50,181 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:54:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:50,190 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:54:50,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:50,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1728898916, now seen corresponding path program 1 times [2021-12-06 21:54:50,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:50,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417637823] [2021-12-06 21:54:50,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:50,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:50,204 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:54:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:50,209 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:54:50,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:50,209 INFO L85 PathProgramCache]: Analyzing trace with hash -106541037, now seen corresponding path program 3 times [2021-12-06 21:54:50,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:50,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418250509] [2021-12-06 21:54:50,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:50,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:50,225 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:54:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:54:50,236 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:54:51,985 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 21:54:51,985 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 21:54:51,985 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 21:54:51,985 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 21:54:51,985 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 21:54:51,985 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:51,985 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 21:54:51,985 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 21:54:51,985 INFO L133 ssoRankerPreferences]: Filename of dumped script: 4BitCounterPointer.c_Iteration9_Lasso [2021-12-06 21:54:51,985 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 21:54:51,985 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 21:54:51,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:51,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:51,995 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:51,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:51,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:51,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:51,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:52,000 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 21:54:52,679 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 21:54:52,679 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 21:54:52,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:52,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:52,680 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:52,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-12-06 21:54:52,681 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 [2021-12-06 21:54:52,687 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:52,688 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:52,688 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:52,688 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:52,689 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:52,689 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:52,691 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:52,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-12-06 21:54:52,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:52,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:52,710 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:52,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-12-06 21:54:52,711 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 [2021-12-06 21:54:52,718 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:52,718 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 21:54:52,718 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:52,718 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:52,718 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:52,718 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 21:54:52,718 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 21:54:52,719 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:52,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-12-06 21:54:52,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:52,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:52,738 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:52,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-12-06 21:54:52,740 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 [2021-12-06 21:54:52,746 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:52,746 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 21:54:52,747 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:52,747 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:52,747 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:52,747 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 21:54:52,747 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 21:54:52,748 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:52,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-12-06 21:54:52,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:52,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:52,767 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:52,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-12-06 21:54:52,768 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 [2021-12-06 21:54:52,775 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:52,775 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:52,775 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:52,775 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:52,778 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:52,778 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:52,780 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:52,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-12-06 21:54:52,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:52,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:52,799 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:52,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-12-06 21:54:52,800 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 [2021-12-06 21:54:52,806 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:52,806 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 21:54:52,807 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:52,807 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:52,807 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:52,807 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 21:54:52,807 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 21:54:52,808 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:52,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2021-12-06 21:54:52,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:52,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:52,827 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:52,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-12-06 21:54:52,828 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 [2021-12-06 21:54:52,835 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:52,835 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:52,835 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:52,835 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:52,836 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:52,836 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:52,838 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:52,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-12-06 21:54:52,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:52,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:52,857 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:52,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-12-06 21:54:52,859 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 [2021-12-06 21:54:52,866 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:52,866 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 21:54:52,866 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:52,866 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:52,866 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:52,866 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 21:54:52,867 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 21:54:52,868 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:52,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-12-06 21:54:52,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:52,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:52,886 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:52,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-12-06 21:54:52,888 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 [2021-12-06 21:54:52,894 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:52,894 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:52,894 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:52,894 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:52,895 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:52,896 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:52,899 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:52,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2021-12-06 21:54:52,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:52,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:52,917 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:52,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-12-06 21:54:52,919 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 [2021-12-06 21:54:52,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:52,926 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:52,926 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:52,926 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:52,929 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:52,929 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:52,937 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:52,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-12-06 21:54:52,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:52,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:52,956 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:52,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-12-06 21:54:52,957 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 [2021-12-06 21:54:52,964 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:52,964 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:52,964 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:52,964 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:52,966 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:52,966 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:52,969 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:52,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-12-06 21:54:52,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:52,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:52,988 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:52,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-12-06 21:54:52,989 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 [2021-12-06 21:54:52,996 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:52,996 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:52,996 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:52,996 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:52,997 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:52,998 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:53,001 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:53,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-12-06 21:54:53,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:53,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:53,020 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:53,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-12-06 21:54:53,021 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 [2021-12-06 21:54:53,028 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:53,028 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:53,028 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:53,028 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:53,029 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:53,029 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:53,031 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 21:54:53,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-12-06 21:54:53,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:53,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:53,050 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:53,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-12-06 21:54:53,051 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 [2021-12-06 21:54:53,058 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 21:54:53,058 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 21:54:53,058 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 21:54:53,058 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 21:54:53,060 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 21:54:53,060 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 21:54:53,063 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 21:54:53,069 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2021-12-06 21:54:53,069 INFO L444 ModelExtractionUtils]: 2 out of 7 variables were initially zero. Simplification set additionally 2 variables to zero. [2021-12-06 21:54:53,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 21:54:53,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:54:53,069 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 21:54:53,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-12-06 21:54:53,070 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 21:54:53,078 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-12-06 21:54:53,078 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 21:54:53,078 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~x2~0#1.base) ULTIMATE.start_main_~x2~0#1.offset)_3) = -2*v_rep(select (select #memory_int ULTIMATE.start_main_~x2~0#1.base) ULTIMATE.start_main_~x2~0#1.offset)_3 + 1 Supporting invariants [] [2021-12-06 21:54:53,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-12-06 21:54:53,231 INFO L297 tatePredicateManager]: 40 out of 42 supporting invariants were superfluous and have been removed [2021-12-06 21:54:53,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:53,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 21:54:53,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:54:53,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2021-12-06 21:54:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:53,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 21:54:53,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:54:53,353 INFO L354 Elim1Store]: treesize reduction 16, result has 63.6 percent of original size [2021-12-06 21:54:53,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 45 [2021-12-06 21:54:53,425 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-12-06 21:54:53,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 51 [2021-12-06 21:54:53,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-12-06 21:54:53,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-06 21:54:53,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2021-12-06 21:54:53,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:54:53,505 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2021-12-06 21:54:53,505 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 36 transitions. cyclomatic complexity: 5 Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:54:53,637 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 36 transitions. cyclomatic complexity: 5. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 64 states and 71 transitions. Complement of second has 13 states. [2021-12-06 21:54:53,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2021-12-06 21:54:53,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:54:53,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 14 transitions. [2021-12-06 21:54:53,637 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 14 transitions. Stem has 10 letters. Loop has 8 letters. [2021-12-06 21:54:53,638 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 21:54:53,638 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 14 transitions. Stem has 18 letters. Loop has 8 letters. [2021-12-06 21:54:53,638 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 21:54:53,638 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 14 transitions. Stem has 10 letters. Loop has 16 letters. [2021-12-06 21:54:53,638 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 21:54:53,638 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 71 transitions. [2021-12-06 21:54:53,639 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 21:54:53,639 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 0 states and 0 transitions. [2021-12-06 21:54:53,639 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-06 21:54:53,639 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-06 21:54:53,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-06 21:54:53,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:54:53,639 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 21:54:53,639 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 21:54:53,639 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 21:54:53,639 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-06 21:54:53,639 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-06 21:54:53,639 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 21:54:53,640 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-06 21:54:53,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.12 09:54:53 BoogieIcfgContainer [2021-12-06 21:54:53,644 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-06 21:54:53,644 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 21:54:53,644 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 21:54:53,644 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 21:54:53,644 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:54:38" (3/4) ... [2021-12-06 21:54:53,646 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 21:54:53,646 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 21:54:53,646 INFO L158 Benchmark]: Toolchain (without parser) took 15890.08ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 80.0MB in the beginning and 83.7MB in the end (delta: -3.7MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2021-12-06 21:54:53,647 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 123.7MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 21:54:53,647 INFO L158 Benchmark]: CACSL2BoogieTranslator took 139.65ms. Allocated memory is still 123.7MB. Free memory was 79.8MB in the beginning and 70.7MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 21:54:53,647 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.42ms. Allocated memory is still 123.7MB. Free memory was 70.7MB in the beginning and 69.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 21:54:53,647 INFO L158 Benchmark]: Boogie Preprocessor took 15.36ms. Allocated memory is still 123.7MB. Free memory was 69.2MB in the beginning and 68.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 21:54:53,647 INFO L158 Benchmark]: RCFGBuilder took 245.24ms. Allocated memory is still 123.7MB. Free memory was 67.9MB in the beginning and 96.4MB in the end (delta: -28.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 21:54:53,648 INFO L158 Benchmark]: BuchiAutomizer took 15458.54ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 96.4MB in the beginning and 83.7MB in the end (delta: 12.7MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. [2021-12-06 21:54:53,648 INFO L158 Benchmark]: Witness Printer took 2.26ms. Allocated memory is still 148.9MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 21:54:53,649 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 123.7MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 139.65ms. Allocated memory is still 123.7MB. Free memory was 79.8MB in the beginning and 70.7MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.42ms. Allocated memory is still 123.7MB. Free memory was 70.7MB in the beginning and 69.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.36ms. Allocated memory is still 123.7MB. Free memory was 69.2MB in the beginning and 68.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 245.24ms. Allocated memory is still 123.7MB. Free memory was 67.9MB in the beginning and 96.4MB in the end (delta: -28.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 15458.54ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 96.4MB in the beginning and 83.7MB in the end (delta: 12.7MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. * Witness Printer took 2.26ms. Allocated memory is still 148.9MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 9 terminating modules (6 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * unknown-#memory_int-unknown[x0][x0] + 1 and consists of 5 locations. One deterministic module has affine ranking function -2 * unknown-#memory_int-unknown[x2][x2] + 1 and consists of 12 locations. One deterministic module has affine ranking function -2 * unknown-#memory_int-unknown[x2][x2] + 1 and consists of 8 locations. 6 modules have a trivial ranking function, the largest among these consists of 25 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 15.4s and 10 iterations. TraceHistogramMax:4. Analysis of lassos took 13.6s. Construction of modules took 0.2s. Büchi inclusion checks took 1.3s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 12 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 33 states and ocurred in iteration 8. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 3/22 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 67 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 65 mSDsluCounter, 106 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 170 IncrementalHoareTripleChecker+Unchecked, 66 mSDsCounter, 89 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 384 IncrementalHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 89 mSolverCounterUnsat, 40 mSDtfsCounter, 384 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc4 concLT0 SILN0 SILU1 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital829 mio100 ax100 hnf100 lsp97 ukn33 mio100 lsp38 div100 bol100 ite100 ukn100 eq188 hnf88 smp95 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-06 21:54:53,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-06 21:54:53,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-06 21:54:54,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-06 21:54:54,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 21:54:54,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 21:54:54,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_401c7e5d-7d06-466d-a91f-83b69800720b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE