./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/AlternKonv.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/AlternKonv.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R --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 9816d5cc9e8c1fba9291af90498afaa319416e5c56fa3cf3ce8da9d63d3e9939 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:23:59,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:23:59,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:23:59,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:23:59,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:23:59,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:23:59,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:23:59,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:23:59,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:23:59,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:23:59,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:23:59,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:23:59,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:23:59,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:23:59,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:23:59,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:23:59,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:23:59,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:23:59,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:23:59,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:23:59,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:23:59,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:23:59,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:23:59,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:23:59,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:23:59,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:23:59,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:23:59,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:23:59,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:23:59,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:23:59,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:23:59,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:23:59,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:23:59,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:23:59,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:23:59,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:23:59,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:23:59,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:23:59,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:23:59,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:23:59,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:23:59,975 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-25 17:24:00,000 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:24:00,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:24:00,000 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:24:00,001 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:24:00,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:24:00,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:24:00,003 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:24:00,003 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-25 17:24:00,003 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-25 17:24:00,004 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-25 17:24:00,004 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-25 17:24:00,004 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-25 17:24:00,004 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-25 17:24:00,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:24:00,005 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:24:00,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:24:00,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:24:00,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-25 17:24:00,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-25 17:24:00,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-25 17:24:00,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:24:00,007 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-25 17:24:00,007 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:24:00,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-25 17:24:00,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:24:00,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:24:00,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:24:00,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:24:00,010 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-25 17:24:00,010 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_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9816d5cc9e8c1fba9291af90498afaa319416e5c56fa3cf3ce8da9d63d3e9939 [2022-11-25 17:24:00,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:24:00,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:24:00,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:24:00,325 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:24:00,325 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:24:00,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/termination-restricted-15/AlternKonv.c [2022-11-25 17:24:03,500 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:24:03,692 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:24:03,693 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/sv-benchmarks/c/termination-restricted-15/AlternKonv.c [2022-11-25 17:24:03,699 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/data/8e561a0d7/4ec67cf1968c43a8a9668d3536d2e8cc/FLAG920b4346e [2022-11-25 17:24:03,720 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/data/8e561a0d7/4ec67cf1968c43a8a9668d3536d2e8cc [2022-11-25 17:24:03,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:24:03,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:24:03,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:24:03,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:24:03,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:24:03,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:24:03" (1/1) ... [2022-11-25 17:24:03,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@351199be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:03, skipping insertion in model container [2022-11-25 17:24:03,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:24:03" (1/1) ... [2022-11-25 17:24:03,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:24:03,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:24:03,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:24:03,889 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:24:03,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:24:03,909 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:24:03,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:03 WrapperNode [2022-11-25 17:24:03,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:24:03,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:24:03,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:24:03,911 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:24:03,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:03" (1/1) ... [2022-11-25 17:24:03,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:03" (1/1) ... [2022-11-25 17:24:03,937 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-11-25 17:24:03,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:24:03,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:24:03,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:24:03,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:24:03,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:03" (1/1) ... [2022-11-25 17:24:03,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:03" (1/1) ... [2022-11-25 17:24:03,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:03" (1/1) ... [2022-11-25 17:24:03,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:03" (1/1) ... [2022-11-25 17:24:03,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:03" (1/1) ... [2022-11-25 17:24:03,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:03" (1/1) ... [2022-11-25 17:24:03,955 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:03" (1/1) ... [2022-11-25 17:24:03,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:03" (1/1) ... [2022-11-25 17:24:03,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:24:03,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:24:03,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:24:03,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:24:03,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:03" (1/1) ... [2022-11-25 17:24:03,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:24:03,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:24:03,989 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:24:04,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-25 17:24:04,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:24:04,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:24:04,119 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:24:04,123 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:24:04,235 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:24:04,241 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:24:04,241 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:24:04,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:24:04 BoogieIcfgContainer [2022-11-25 17:24:04,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:24:04,244 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-25 17:24:04,244 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-25 17:24:04,247 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-25 17:24:04,251 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 17:24:04,251 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 05:24:03" (1/3) ... [2022-11-25 17:24:04,254 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@59401e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 05:24:04, skipping insertion in model container [2022-11-25 17:24:04,254 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 17:24:04,254 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:03" (2/3) ... [2022-11-25 17:24:04,255 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@59401e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 05:24:04, skipping insertion in model container [2022-11-25 17:24:04,255 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 17:24:04,255 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:24:04" (3/3) ... [2022-11-25 17:24:04,257 INFO L332 chiAutomizerObserver]: Analyzing ICFG AlternKonv.c [2022-11-25 17:24:04,372 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-25 17:24:04,373 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-25 17:24:04,373 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-25 17:24:04,373 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-25 17:24:04,373 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-25 17:24:04,373 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-25 17:24:04,374 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-25 17:24:04,374 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-25 17:24:04,378 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 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) [2022-11-25 17:24:04,394 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-25 17:24:04,395 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:24:04,395 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:24:04,402 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-25 17:24:04,402 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-25 17:24:04,402 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-25 17:24:04,403 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 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) [2022-11-25 17:24:04,404 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-25 17:24:04,404 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:24:04,405 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:24:04,405 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-25 17:24:04,405 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-25 17:24:04,413 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 6#L18-2true [2022-11-25 17:24:04,414 INFO L750 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(0 != main_~i~0#1); 7#L10true assume !(main_~i~0#1 < 0);main_~i~0#1 := main_~i~0#1 - 2; 3#L18true assume !(main_~i~0#1 > 0); 6#L18-2true [2022-11-25 17:24:04,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:04,419 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-25 17:24:04,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:04,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171548465] [2022-11-25 17:24:04,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:04,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:24:04,507 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:24:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:24:04,524 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:24:04,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:04,543 INFO L85 PathProgramCache]: Analyzing trace with hash 41231, now seen corresponding path program 1 times [2022-11-25 17:24:04,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:04,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103280485] [2022-11-25 17:24:04,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:04,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:24:04,568 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:24:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:24:04,577 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:24:04,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:04,579 INFO L85 PathProgramCache]: Analyzing trace with hash 28700173, now seen corresponding path program 1 times [2022-11-25 17:24:04,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:04,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603345471] [2022-11-25 17:24:04,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:04,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:24:04,596 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:24:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:24:04,617 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:24:04,742 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 17:24:04,742 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 17:24:04,742 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 17:24:04,742 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 17:24:04,743 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 17:24:04,743 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:24:04,743 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 17:24:04,743 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 17:24:04,743 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration1_Loop [2022-11-25 17:24:04,743 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 17:24:04,744 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 17:24:04,763 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:24:04,777 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:24:04,782 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:24:04,879 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 17:24:04,880 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 17:24:04,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:24:04,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:24:04,886 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:24:04,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-25 17:24:04,890 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:24:04,891 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:24:04,920 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:24:04,920 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 17:24:04,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:24:04,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:24:04,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:24:04,933 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:24:04,942 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:24:04,942 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:24:04,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-25 17:24:04,968 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:24:04,968 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 17:24:04,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:24:04,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:24:04,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:24:04,980 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:24:05,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-25 17:24:05,003 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:24:05,008 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:24:05,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:24:05,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:24:05,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:24:05,047 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:24:05,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-25 17:24:05,057 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 17:24:05,057 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:24:05,095 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 17:24:05,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:24:05,100 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 17:24:05,101 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 17:24:05,101 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 17:24:05,101 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 17:24:05,101 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 17:24:05,101 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:24:05,101 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 17:24:05,101 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 17:24:05,101 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration1_Loop [2022-11-25 17:24:05,101 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 17:24:05,101 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 17:24:05,103 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:24:05,111 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:24:05,115 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:24:05,189 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 17:24:05,194 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 17:24:05,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:24:05,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:24:05,197 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:24:05,206 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 [2022-11-25 17:24:05,219 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:24:05,219 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:24:05,219 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:24:05,219 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:24:05,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-25 17:24:05,228 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-25 17:24:05,228 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-25 17:24:05,244 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 17:24:05,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:24:05,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:24:05,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:24:05,256 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:24:05,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-25 17:24:05,261 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 [2022-11-25 17:24:05,271 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:24:05,271 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:24:05,271 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:24:05,271 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:24:05,276 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-25 17:24:05,276 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-25 17:24:05,291 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 17:24:05,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:24:05,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:24:05,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:24:05,304 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:24:05,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-25 17:24:05,309 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 [2022-11-25 17:24:05,322 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:24:05,322 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 17:24:05,322 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:24:05,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:24:05,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:24:05,324 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 17:24:05,324 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 17:24:05,344 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 17:24:05,350 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 17:24:05,350 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-25 17:24:05,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:24:05,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:24:05,393 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:24:05,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-25 17:24:05,395 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 17:24:05,395 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 17:24:05,396 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 17:24:05,396 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-11-25 17:24:05,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-25 17:24:05,403 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 17:24:05,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:05,444 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:24:05,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:24:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:05,466 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:24:05,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:24:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:24:05,592 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-25 17:24:05,594 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 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) 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) [2022-11-25 17:24:05,636 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 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). 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 32 states and 47 transitions. Complement of second has 6 states. [2022-11-25 17:24:05,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-25 17:24:05,643 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) [2022-11-25 17:24:05,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2022-11-25 17:24:05,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 2 letters. Loop has 3 letters. [2022-11-25 17:24:05,646 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:24:05,646 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 5 letters. Loop has 3 letters. [2022-11-25 17:24:05,646 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:24:05,647 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 2 letters. Loop has 6 letters. [2022-11-25 17:24:05,647 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:24:05,648 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 47 transitions. [2022-11-25 17:24:05,651 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-25 17:24:05,654 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 15 states and 22 transitions. [2022-11-25 17:24:05,655 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-11-25 17:24:05,655 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2022-11-25 17:24:05,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 22 transitions. [2022-11-25 17:24:05,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 17:24:05,656 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 22 transitions. [2022-11-25 17:24:05,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 22 transitions. [2022-11-25 17:24:05,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2022-11-25 17:24:05,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 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) [2022-11-25 17:24:05,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 21 transitions. [2022-11-25 17:24:05,682 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 21 transitions. [2022-11-25 17:24:05,682 INFO L428 stractBuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2022-11-25 17:24:05,682 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-25 17:24:05,682 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 21 transitions. [2022-11-25 17:24:05,683 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-25 17:24:05,683 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:24:05,683 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:24:05,684 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-25 17:24:05,684 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-25 17:24:05,684 INFO L748 eck$LassoCheckResult]: Stem: 89#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 90#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 94#L18-2 assume !!(0 != main_~i~0#1); 91#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 93#L12 [2022-11-25 17:24:05,685 INFO L750 eck$LassoCheckResult]: Loop: 93#L12 assume !(main_~i~0#1 < 0); 83#L18-2 assume !!(0 != main_~i~0#1); 95#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 93#L12 [2022-11-25 17:24:05,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:05,686 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-11-25 17:24:05,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:05,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289955139] [2022-11-25 17:24:05,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:05,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:24:05,692 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:24:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:24:05,696 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:24:05,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:05,697 INFO L85 PathProgramCache]: Analyzing trace with hash 53210, now seen corresponding path program 1 times [2022-11-25 17:24:05,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:05,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547676974] [2022-11-25 17:24:05,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:05,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:05,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:24:05,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:24:05,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547676974] [2022-11-25 17:24:05,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547676974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:24:05,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:24:05,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:24:05,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571814] [2022-11-25 17:24:05,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:24:05,741 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 17:24:05,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:24:05,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:24:05,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:24:05,745 INFO L87 Difference]: Start difference. First operand 14 states and 21 transitions. cyclomatic complexity: 9 Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-25 17:24:05,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:24:05,764 INFO L93 Difference]: Finished difference Result 16 states and 23 transitions. [2022-11-25 17:24:05,764 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2022-11-25 17:24:05,765 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-11-25 17:24:05,765 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 23 transitions. [2022-11-25 17:24:05,766 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-11-25 17:24:05,766 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2022-11-25 17:24:05,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 23 transitions. [2022-11-25 17:24:05,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 17:24:05,766 INFO L218 hiAutomatonCegarLoop]: Abstraction has 16 states and 23 transitions. [2022-11-25 17:24:05,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 23 transitions. [2022-11-25 17:24:05,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-25 17:24:05,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.4375) internal successors, (23), 15 states have internal predecessors, (23), 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) [2022-11-25 17:24:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 23 transitions. [2022-11-25 17:24:05,769 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 23 transitions. [2022-11-25 17:24:05,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:24:05,770 INFO L428 stractBuchiCegarLoop]: Abstraction has 16 states and 23 transitions. [2022-11-25 17:24:05,770 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-25 17:24:05,770 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 23 transitions. [2022-11-25 17:24:05,771 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-11-25 17:24:05,771 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:24:05,771 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:24:05,772 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-25 17:24:05,772 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-25 17:24:05,772 INFO L748 eck$LassoCheckResult]: Stem: 124#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 125#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 132#L18-2 assume !!(0 != main_~i~0#1); 130#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 131#L12 [2022-11-25 17:24:05,773 INFO L750 eck$LassoCheckResult]: Loop: 131#L12 assume main_~i~0#1 < 0; 126#L13 assume !(main_~i~0#1 <= -2147483648);main_~i~0#1 := -1 * main_~i~0#1; 119#L18-2 assume !!(0 != main_~i~0#1); 133#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 131#L12 [2022-11-25 17:24:05,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:05,773 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 2 times [2022-11-25 17:24:05,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:05,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038639067] [2022-11-25 17:24:05,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:05,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:24:05,779 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:24:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:24:05,783 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:24:05,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:05,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1451465, now seen corresponding path program 1 times [2022-11-25 17:24:05,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:05,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443223883] [2022-11-25 17:24:05,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:05,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:05,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:24:05,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:24:05,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443223883] [2022-11-25 17:24:05,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443223883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:24:05,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:24:05,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:24:05,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462398128] [2022-11-25 17:24:05,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:24:05,821 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 17:24:05,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:24:05,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:24:05,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:24:05,822 INFO L87 Difference]: Start difference. First operand 16 states and 23 transitions. cyclomatic complexity: 9 Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:24:05,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:24:05,850 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2022-11-25 17:24:05,850 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 28 transitions. [2022-11-25 17:24:05,851 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2022-11-25 17:24:05,852 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 21 states and 27 transitions. [2022-11-25 17:24:05,852 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-11-25 17:24:05,852 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-11-25 17:24:05,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 27 transitions. [2022-11-25 17:24:05,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 17:24:05,853 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 27 transitions. [2022-11-25 17:24:05,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 27 transitions. [2022-11-25 17:24:05,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2022-11-25 17:24:05,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 14 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) [2022-11-25 17:24:05,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2022-11-25 17:24:05,855 INFO L240 hiAutomatonCegarLoop]: Abstraction has 15 states and 21 transitions. [2022-11-25 17:24:05,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:24:05,857 INFO L428 stractBuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2022-11-25 17:24:05,857 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-25 17:24:05,857 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 21 transitions. [2022-11-25 17:24:05,858 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-25 17:24:05,858 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:24:05,858 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:24:05,858 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-25 17:24:05,858 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2022-11-25 17:24:05,859 INFO L748 eck$LassoCheckResult]: Stem: 168#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 169#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 175#L18-2 assume !!(0 != main_~i~0#1); 172#L10 [2022-11-25 17:24:05,859 INFO L750 eck$LassoCheckResult]: Loop: 172#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 174#L12 assume !(main_~i~0#1 < 0); 171#L18-2 assume !!(0 != main_~i~0#1); 176#L10 assume !(main_~i~0#1 < 0);main_~i~0#1 := main_~i~0#1 - 2; 163#L18 assume main_~i~0#1 > 0;main_~i~0#1 := -1 * main_~i~0#1; 165#L18-2 assume !!(0 != main_~i~0#1); 172#L10 [2022-11-25 17:24:05,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:05,860 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-11-25 17:24:05,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:05,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102782311] [2022-11-25 17:24:05,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:05,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:24:05,868 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:24:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:24:05,872 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:24:05,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:05,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1310830888, now seen corresponding path program 1 times [2022-11-25 17:24:05,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:05,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539091546] [2022-11-25 17:24:05,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:05,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:24:05,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:24:05,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539091546] [2022-11-25 17:24:05,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539091546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:24:05,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:24:05,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:24:05,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158905160] [2022-11-25 17:24:05,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:24:05,933 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 17:24:05,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:24:05,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:24:05,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:24:05,934 INFO L87 Difference]: Start difference. First operand 15 states and 21 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-25 17:24:05,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:24:05,964 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2022-11-25 17:24:05,964 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 33 transitions. [2022-11-25 17:24:05,965 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2022-11-25 17:24:05,966 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 25 states and 31 transitions. [2022-11-25 17:24:05,966 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2022-11-25 17:24:05,966 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2022-11-25 17:24:05,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 31 transitions. [2022-11-25 17:24:05,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 17:24:05,967 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 31 transitions. [2022-11-25 17:24:05,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 31 transitions. [2022-11-25 17:24:05,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 17. [2022-11-25 17:24:05,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 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) [2022-11-25 17:24:05,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2022-11-25 17:24:05,973 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 23 transitions. [2022-11-25 17:24:05,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:24:05,975 INFO L428 stractBuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2022-11-25 17:24:05,976 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-25 17:24:05,976 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 23 transitions. [2022-11-25 17:24:05,977 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-11-25 17:24:05,979 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:24:05,979 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:24:05,979 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-25 17:24:05,980 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2022-11-25 17:24:05,980 INFO L748 eck$LassoCheckResult]: Stem: 216#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 217#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 220#L18-2 assume !!(0 != main_~i~0#1); 218#L10 [2022-11-25 17:24:05,980 INFO L750 eck$LassoCheckResult]: Loop: 218#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 221#L12 assume !(main_~i~0#1 < 0); 222#L18-2 assume !!(0 != main_~i~0#1); 219#L10 assume !(main_~i~0#1 < 0);main_~i~0#1 := main_~i~0#1 - 2; 212#L18 assume !(main_~i~0#1 > 0); 213#L18-2 assume !!(0 != main_~i~0#1); 218#L10 [2022-11-25 17:24:05,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:05,981 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 2 times [2022-11-25 17:24:05,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:05,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512691534] [2022-11-25 17:24:05,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:05,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:24:05,985 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:24:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:24:05,987 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:24:05,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:05,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1310830950, now seen corresponding path program 1 times [2022-11-25 17:24:05,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:05,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413257436] [2022-11-25 17:24:05,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:05,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:24:05,995 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:24:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:24:05,999 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:24:06,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:06,000 INFO L85 PathProgramCache]: Analyzing trace with hash 590073037, now seen corresponding path program 1 times [2022-11-25 17:24:06,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:06,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182482523] [2022-11-25 17:24:06,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:06,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:24:06,007 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:24:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:24:06,011 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:24:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:24:06,112 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:24:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:24:06,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 05:24:06 BoogieIcfgContainer [2022-11-25 17:24:06,137 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-25 17:24:06,138 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:24:06,138 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:24:06,138 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:24:06,139 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:24:04" (3/4) ... [2022-11-25 17:24:06,149 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-25 17:24:06,190 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:24:06,190 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:24:06,191 INFO L158 Benchmark]: Toolchain (without parser) took 2463.62ms. Allocated memory is still 167.8MB. Free memory was 124.8MB in the beginning and 87.7MB in the end (delta: 37.1MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2022-11-25 17:24:06,192 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 111.1MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:24:06,192 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.59ms. Allocated memory is still 167.8MB. Free memory was 124.8MB in the beginning and 115.5MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 17:24:06,193 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.58ms. Allocated memory is still 167.8MB. Free memory was 115.5MB in the beginning and 114.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:24:06,193 INFO L158 Benchmark]: Boogie Preprocessor took 18.53ms. Allocated memory is still 167.8MB. Free memory was 114.2MB in the beginning and 113.4MB in the end (delta: 829.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:24:06,194 INFO L158 Benchmark]: RCFGBuilder took 285.55ms. Allocated memory is still 167.8MB. Free memory was 113.4MB in the beginning and 104.4MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 17:24:06,194 INFO L158 Benchmark]: BuchiAutomizer took 1893.86ms. Allocated memory is still 167.8MB. Free memory was 104.4MB in the beginning and 88.8MB in the end (delta: 15.6MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2022-11-25 17:24:06,195 INFO L158 Benchmark]: Witness Printer took 52.57ms. Allocated memory is still 167.8MB. Free memory was 88.8MB in the beginning and 87.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:24:06,201 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 111.1MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 176.59ms. Allocated memory is still 167.8MB. Free memory was 124.8MB in the beginning and 115.5MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.58ms. Allocated memory is still 167.8MB. Free memory was 115.5MB in the beginning and 114.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.53ms. Allocated memory is still 167.8MB. Free memory was 114.2MB in the beginning and 113.4MB in the end (delta: 829.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 285.55ms. Allocated memory is still 167.8MB. Free memory was 113.4MB in the beginning and 104.4MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1893.86ms. Allocated memory is still 167.8MB. Free memory was 104.4MB in the beginning and 88.8MB in the end (delta: 15.6MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. * Witness Printer took 52.57ms. Allocated memory is still 167.8MB. Free memory was 88.8MB in the beginning and 87.7MB in the end (delta: 1.2MB). 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 4 terminating modules (3 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 17 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 67 IncrementalHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 31 mSDtfsCounter, 67 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax163 hnf100 lsp61 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf96 smp71 dnf100 smp100 tf110 neg90 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 49ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 10]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i != 0 VAL [i=-1] Loop: [L10] COND TRUE i < 0 [L11] i = i+2 [L12] COND FALSE !(i < 0) [L9] COND TRUE i != 0 [L10] COND FALSE !(i < 0) [L17] i = i-2 [L18] COND FALSE !(i > 0) [L9] COND TRUE i != 0 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i != 0 VAL [i=-1] Loop: [L10] COND TRUE i < 0 [L11] i = i+2 [L12] COND FALSE !(i < 0) [L9] COND TRUE i != 0 [L10] COND FALSE !(i < 0) [L17] i = i-2 [L18] COND FALSE !(i > 0) [L9] COND TRUE i != 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-25 17:24:06,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-25 17:24:06,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c7f9c8f-5262-416f-bdfd-6845fac95db0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)