./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a --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 bb3f76d55016616b178303c0eddf93fcbee588d4887c9917c414ed1a56e984ba --- 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-b5237d8 [2022-11-21 17:18:56,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:18:56,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:18:56,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:18:56,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:18:56,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:18:56,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:18:56,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:18:56,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:18:56,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:18:56,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:18:56,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:18:56,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:18:56,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:18:56,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:18:56,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:18:56,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:18:56,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:18:56,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:18:56,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:18:56,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:18:56,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:18:56,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:18:56,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:18:56,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:18:56,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:18:56,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:18:56,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:18:56,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:18:56,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:18:56,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:18:56,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:18:56,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:18:56,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:18:56,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:18:56,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:18:56,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:18:56,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:18:56,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:18:56,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:18:56,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:18:56,674 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-21 17:18:56,709 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:18:56,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:18:56,715 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:18:56,715 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:18:56,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:18:56,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:18:56,717 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:18:56,717 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-21 17:18:56,717 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-21 17:18:56,718 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-21 17:18:56,719 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-21 17:18:56,719 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-21 17:18:56,719 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-21 17:18:56,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:18:56,720 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:18:56,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:18:56,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:18:56,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-21 17:18:56,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-21 17:18:56,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-21 17:18:56,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:18:56,721 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-21 17:18:56,721 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:18:56,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-21 17:18:56,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:18:56,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:18:56,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:18:56,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:18:56,724 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-21 17:18:56,725 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_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb3f76d55016616b178303c0eddf93fcbee588d4887c9917c414ed1a56e984ba [2022-11-21 17:18:57,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:18:57,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:18:57,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:18:57,104 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:18:57,104 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:18:57,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2022-11-21 17:19:00,115 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:19:00,346 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:19:00,347 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2022-11-21 17:19:00,353 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/data/e094390dd/c3ecd0ff90eb484b89be60b07439aa85/FLAG8bc3ad0f0 [2022-11-21 17:19:00,372 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/data/e094390dd/c3ecd0ff90eb484b89be60b07439aa85 [2022-11-21 17:19:00,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:19:00,381 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:19:00,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:19:00,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:19:00,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:19:00,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:19:00" (1/1) ... [2022-11-21 17:19:00,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49ae1dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00, skipping insertion in model container [2022-11-21 17:19:00,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:19:00" (1/1) ... [2022-11-21 17:19:00,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:19:00,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:19:00,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:19:00,635 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:19:00,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:19:00,683 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:19:00,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00 WrapperNode [2022-11-21 17:19:00,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:19:00,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:19:00,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:19:00,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:19:00,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (1/1) ... [2022-11-21 17:19:00,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (1/1) ... [2022-11-21 17:19:00,720 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2022-11-21 17:19:00,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:19:00,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:19:00,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:19:00,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:19:00,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (1/1) ... [2022-11-21 17:19:00,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (1/1) ... [2022-11-21 17:19:00,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (1/1) ... [2022-11-21 17:19:00,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (1/1) ... [2022-11-21 17:19:00,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (1/1) ... [2022-11-21 17:19:00,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (1/1) ... [2022-11-21 17:19:00,741 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (1/1) ... [2022-11-21 17:19:00,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (1/1) ... [2022-11-21 17:19:00,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:19:00,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:19:00,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:19:00,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:19:00,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (1/1) ... [2022-11-21 17:19:00,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:00,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:00,775 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:00,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-21 17:19:00,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:19:00,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:19:00,895 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:19:00,898 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:19:00,971 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:19:00,977 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:19:00,978 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 17:19:00,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:19:00 BoogieIcfgContainer [2022-11-21 17:19:00,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:19:00,981 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-21 17:19:00,981 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-21 17:19:00,985 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-21 17:19:00,986 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 17:19:00,986 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 05:19:00" (1/3) ... [2022-11-21 17:19:00,989 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e20f529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 05:19:00, skipping insertion in model container [2022-11-21 17:19:00,989 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 17:19:00,989 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (2/3) ... [2022-11-21 17:19:00,990 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e20f529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 05:19:00, skipping insertion in model container [2022-11-21 17:19:00,990 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 17:19:00,990 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:19:00" (3/3) ... [2022-11-21 17:19:00,992 INFO L332 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a.c [2022-11-21 17:19:01,070 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-21 17:19:01,071 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-21 17:19:01,071 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-21 17:19:01,071 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-21 17:19:01,071 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-21 17:19:01,071 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-21 17:19:01,072 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-21 17:19:01,072 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-21 17:19:01,079 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2022-11-21 17:19:01,103 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 17:19:01,104 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 17:19:01,104 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 17:19:01,110 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-21 17:19:01,110 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 17:19:01,111 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-21 17:19:01,111 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2022-11-21 17:19:01,113 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 17:19:01,113 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 17:19:01,114 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 17:19:01,115 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-21 17:19:01,115 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 17:19:01,124 INFO L748 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 3#L17-2true [2022-11-21 17:19:01,125 INFO L750 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(0 != main_~x~0#1); 4#L17true assume !(main_~x~0#1 > 0);main_~x~0#1 := 1 + main_~x~0#1; 3#L17-2true [2022-11-21 17:19:01,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:01,131 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-21 17:19:01,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:01,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308096651] [2022-11-21 17:19:01,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:01,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:19:01,234 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:19:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:19:01,253 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:19:01,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:01,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2022-11-21 17:19:01,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:01,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366237721] [2022-11-21 17:19:01,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:01,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:19:01,268 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:19:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:19:01,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:19:01,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:01,275 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-11-21 17:19:01,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:01,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096513248] [2022-11-21 17:19:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:01,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:19:01,293 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:19:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:19:01,298 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:19:01,434 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:19:01,435 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:19:01,435 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:19:01,436 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:19:01,436 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 17:19:01,436 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:01,436 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:19:01,436 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:19:01,437 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration1_Loop [2022-11-21 17:19:01,437 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:19:01,437 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:19:01,457 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:01,470 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:01,474 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:01,551 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:19:01,552 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 17:19:01,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:01,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:01,558 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:01,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-21 17:19:01,580 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:19:01,580 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:19:01,610 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:19:01,610 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: [] [2022-11-21 17:19:01,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:01,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:01,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:01,623 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:01,632 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:19:01,632 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:19:01,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-21 17:19:01,671 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:19:01,671 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: [] [2022-11-21 17:19:01,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:01,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:01,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:01,683 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:01,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-21 17:19:01,688 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:19:01,688 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:19:01,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:01,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:01,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:01,717 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:01,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-21 17:19:01,724 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 17:19:01,724 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:19:01,764 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 17:19:01,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:01,773 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:19:01,773 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:19:01,773 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:19:01,773 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:19:01,773 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 17:19:01,773 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:01,774 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:19:01,774 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:19:01,774 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration1_Loop [2022-11-21 17:19:01,774 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:19:01,774 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:19:01,784 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:01,788 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:01,799 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:01,866 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:19:01,870 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 17:19:01,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:01,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:01,873 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:01,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-21 17:19:01,887 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 [2022-11-21 17:19:01,901 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:19:01,901 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:19:01,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:19:01,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:19:01,907 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-21 17:19:01,907 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-21 17:19:01,935 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 17:19:01,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:01,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:01,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:01,940 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:01,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-21 17:19:01,945 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 [2022-11-21 17:19:01,955 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:19:01,956 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:19:01,956 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:19:01,956 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:19:01,961 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-21 17:19:01,961 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-21 17:19:01,976 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 17:19:01,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-11-21 17:19:01,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:01,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:01,996 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:02,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-21 17:19:02,004 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 17:19:02,015 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:19:02,015 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 17:19:02,015 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:19:02,015 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:19:02,016 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:19:02,017 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 17:19:02,017 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 17:19:02,022 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 17:19:02,027 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 17:19:02,027 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-21 17:19:02,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:02,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:02,059 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:02,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-21 17:19:02,062 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 17:19:02,062 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 17:19:02,062 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 17:19:02,063 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-11-21 17:19:02,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:02,075 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 17:19:02,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:02,120 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:19:02,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:19:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:02,133 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:19:02,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:19:02,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:19:02,171 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-21 17:19:02,173 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:19:02,212 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 31 transitions. Complement of second has 6 states. [2022-11-21 17:19:02,215 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 [2022-11-21 17:19:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:19:02,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2022-11-21 17:19:02,221 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 2 letters. [2022-11-21 17:19:02,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:19:02,222 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-21 17:19:02,223 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:19:02,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2022-11-21 17:19:02,223 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:19:02,224 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2022-11-21 17:19:02,226 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 17:19:02,230 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2022-11-21 17:19:02,231 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-11-21 17:19:02,231 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2022-11-21 17:19:02,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2022-11-21 17:19:02,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 17:19:02,233 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-21 17:19:02,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2022-11-21 17:19:02,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-21 17:19:02,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:19:02,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2022-11-21 17:19:02,260 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-21 17:19:02,260 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-21 17:19:02,260 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-21 17:19:02,260 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2022-11-21 17:19:02,261 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 17:19:02,261 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 17:19:02,261 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 17:19:02,262 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-21 17:19:02,274 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 17:19:02,275 INFO L748 eck$LassoCheckResult]: Stem: 72#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 73#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 74#L17-2 assume !!(0 != main_~x~0#1); 67#L17 assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1; 68#L17-2 [2022-11-21 17:19:02,275 INFO L750 eck$LassoCheckResult]: Loop: 68#L17-2 assume !!(0 != main_~x~0#1); 71#L17 assume !(main_~x~0#1 > 0);main_~x~0#1 := 1 + main_~x~0#1; 68#L17-2 [2022-11-21 17:19:02,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:02,276 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-11-21 17:19:02,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:02,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464042872] [2022-11-21 17:19:02,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:02,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:19:02,282 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:19:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:19:02,286 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:19:02,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:02,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2022-11-21 17:19:02,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:02,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842581661] [2022-11-21 17:19:02,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:02,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:19:02,294 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:19:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:19:02,298 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:19:02,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:02,298 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2022-11-21 17:19:02,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:02,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994780592] [2022-11-21 17:19:02,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:02,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:02,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:19:02,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:02,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994780592] [2022-11-21 17:19:02,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994780592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:19:02,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:19:02,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:19:02,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878403824] [2022-11-21 17:19:02,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:19:02,505 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:19:02,505 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:19:02,506 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:19:02,506 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:19:02,506 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 17:19:02,506 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:02,506 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:19:02,506 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:19:02,507 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration2_Loop [2022-11-21 17:19:02,507 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:19:02,507 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:19:02,509 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:02,518 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:02,525 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:02,600 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:19:02,601 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 17:19:02,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:02,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:02,603 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:02,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-21 17:19:02,612 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:19:02,613 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:19:02,649 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:19:02,649 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 17:19:02,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:02,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:02,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:02,660 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:02,666 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:19:02,667 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:19:02,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-21 17:19:02,699 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:19:02,699 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 17:19:02,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:02,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:02,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:02,709 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:02,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-21 17:19:02,712 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:19:02,712 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:19:02,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:02,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:02,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:02,747 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:02,751 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 17:19:02,752 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:19:02,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-21 17:19:02,791 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 17:19:02,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:02,799 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:19:02,799 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:19:02,799 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:19:02,800 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:19:02,800 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 17:19:02,800 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:02,800 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:19:02,800 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:19:02,800 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration2_Loop [2022-11-21 17:19:02,800 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:19:02,801 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:19:02,802 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:02,809 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:02,813 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:02,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:02,926 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:19:02,927 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 17:19:02,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:02,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:02,940 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:02,953 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 [2022-11-21 17:19:02,966 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:19:02,967 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:19:02,967 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:19:02,967 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:19:02,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-21 17:19:02,974 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-21 17:19:02,974 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-21 17:19:02,987 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 17:19:02,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-11-21 17:19:02,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:02,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:02,998 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:03,008 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 [2022-11-21 17:19:03,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-21 17:19:03,022 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:19:03,022 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:19:03,023 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:19:03,023 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:19:03,037 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-21 17:19:03,037 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-21 17:19:03,066 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 17:19:03,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:03,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:03,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:03,078 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:03,087 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 [2022-11-21 17:19:03,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:19:03,100 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 17:19:03,100 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:19:03,101 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:19:03,101 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:19:03,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-21 17:19:03,102 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 17:19:03,102 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 17:19:03,112 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 17:19:03,117 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 17:19:03,117 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-21 17:19:03,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:03,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:03,119 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:03,135 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 17:19:03,135 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 17:19:03,136 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 17:19:03,136 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-11-21 17:19:03,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-21 17:19:03,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:03,144 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 17:19:03,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:03,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:19:03,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:19:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:03,191 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:19:03,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:19:03,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:19:03,196 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-21 17:19:03,196 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) 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) [2022-11-21 17:19:03,225 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) 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) Result 12 states and 17 transitions. Complement of second has 5 states. [2022-11-21 17:19:03,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-21 17:19:03,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) 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) [2022-11-21 17:19:03,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2022-11-21 17:19:03,233 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-21 17:19:03,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:19:03,234 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2022-11-21 17:19:03,234 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:19:03,234 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2022-11-21 17:19:03,234 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:19:03,235 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2022-11-21 17:19:03,236 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 17:19:03,239 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2022-11-21 17:19:03,239 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-11-21 17:19:03,239 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-21 17:19:03,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2022-11-21 17:19:03,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 17:19:03,240 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-11-21 17:19:03,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2022-11-21 17:19:03,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-21 17:19:03,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 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) [2022-11-21 17:19:03,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2022-11-21 17:19:03,244 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-11-21 17:19:03,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:03,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:19:03,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:19:03,249 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2022-11-21 17:19:03,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:19:03,277 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2022-11-21 17:19:03,277 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2022-11-21 17:19:03,281 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 17:19:03,283 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 10 states and 12 transitions. [2022-11-21 17:19:03,284 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-11-21 17:19:03,284 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-21 17:19:03,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2022-11-21 17:19:03,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 17:19:03,285 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-11-21 17:19:03,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2022-11-21 17:19:03,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2022-11-21 17:19:03,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-11-21 17:19:03,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2022-11-21 17:19:03,288 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2022-11-21 17:19:03,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:19:03,291 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2022-11-21 17:19:03,292 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-21 17:19:03,292 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2022-11-21 17:19:03,294 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 17:19:03,294 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 17:19:03,294 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 17:19:03,295 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-21 17:19:03,295 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 17:19:03,297 INFO L748 eck$LassoCheckResult]: Stem: 153#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 154#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 155#L17-2 assume !!(0 != main_~x~0#1); 150#L17 [2022-11-21 17:19:03,297 INFO L750 eck$LassoCheckResult]: Loop: 150#L17 assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1; 149#L17-2 assume !!(0 != main_~x~0#1); 150#L17 [2022-11-21 17:19:03,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:03,298 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-11-21 17:19:03,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:03,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432573067] [2022-11-21 17:19:03,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:03,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:19:03,319 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:19:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:19:03,327 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:19:03,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:03,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 1 times [2022-11-21 17:19:03,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:03,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113624834] [2022-11-21 17:19:03,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:03,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:19:03,344 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:19:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:19:03,353 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:19:03,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:03,357 INFO L85 PathProgramCache]: Analyzing trace with hash 28699749, now seen corresponding path program 2 times [2022-11-21 17:19:03,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:03,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416594071] [2022-11-21 17:19:03,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:03,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:19:03,375 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:19:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:19:03,393 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:19:03,421 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:19:03,421 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:19:03,421 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:19:03,421 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:19:03,422 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 17:19:03,422 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:03,422 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:19:03,422 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:19:03,422 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration3_Loop [2022-11-21 17:19:03,423 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:19:03,423 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:19:03,424 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:03,440 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:03,445 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:03,520 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:19:03,520 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 17:19:03,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:03,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:03,522 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:03,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-21 17:19:03,525 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:19:03,526 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:19:03,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:03,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:03,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:03,543 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:03,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-21 17:19:03,547 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 17:19:03,547 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:19:03,636 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 17:19:03,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:03,646 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:19:03,647 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:19:03,647 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:19:03,647 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:19:03,647 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 17:19:03,647 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:03,647 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:19:03,648 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:19:03,648 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration3_Loop [2022-11-21 17:19:03,648 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:19:03,648 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:19:03,649 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:03,659 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:03,663 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:03,724 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:19:03,724 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 17:19:03,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:03,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:03,728 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:03,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-21 17:19:03,735 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 [2022-11-21 17:19:03,745 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:19:03,745 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 17:19:03,746 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:19:03,746 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:19:03,746 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:19:03,747 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 17:19:03,747 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 17:19:03,755 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 17:19:03,761 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 17:19:03,761 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-21 17:19:03,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:03,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:03,767 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:03,775 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 17:19:03,775 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 17:19:03,776 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 17:19:03,776 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-11-21 17:19:03,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-21 17:19:03,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:03,784 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 17:19:03,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:03,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:19:03,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:19:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:03,814 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:19:03,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:19:03,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:19:03,866 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 [2022-11-21 17:19:03,867 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:19:03,883 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 14 transitions. Complement of second has 5 states. [2022-11-21 17:19:03,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-21 17:19:03,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:19:03,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-11-21 17:19:03,889 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2022-11-21 17:19:03,889 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:19:03,889 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2022-11-21 17:19:03,891 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:19:03,892 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2022-11-21 17:19:03,892 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:19:03,892 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2022-11-21 17:19:03,894 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 17:19:03,895 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2022-11-21 17:19:03,897 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-11-21 17:19:03,897 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2022-11-21 17:19:03,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2022-11-21 17:19:03,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 17:19:03,898 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2022-11-21 17:19:03,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2022-11-21 17:19:03,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2022-11-21 17:19:03,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-11-21 17:19:03,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2022-11-21 17:19:03,900 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2022-11-21 17:19:03,900 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2022-11-21 17:19:03,901 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-21 17:19:03,901 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2022-11-21 17:19:03,902 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 17:19:03,902 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 17:19:03,902 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 17:19:03,903 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2022-11-21 17:19:03,903 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 17:19:03,903 INFO L748 eck$LassoCheckResult]: Stem: 208#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 209#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 203#L17-2 assume !!(0 != main_~x~0#1); 204#L17 assume !(main_~x~0#1 > 0);main_~x~0#1 := 1 + main_~x~0#1; 205#L17-2 assume !!(0 != main_~x~0#1); 206#L17 [2022-11-21 17:19:03,904 INFO L750 eck$LassoCheckResult]: Loop: 206#L17 assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1; 207#L17-2 assume !!(0 != main_~x~0#1); 206#L17 [2022-11-21 17:19:03,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:03,904 INFO L85 PathProgramCache]: Analyzing trace with hash 28699811, now seen corresponding path program 2 times [2022-11-21 17:19:03,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:03,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319635604] [2022-11-21 17:19:03,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:03,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:19:03,919 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:19:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:19:03,933 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:19:03,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:03,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 2 times [2022-11-21 17:19:03,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:03,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107667219] [2022-11-21 17:19:03,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:03,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:19:03,947 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:19:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:19:03,953 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:19:03,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:03,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1810715040, now seen corresponding path program 2 times [2022-11-21 17:19:03,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:03,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366257599] [2022-11-21 17:19:03,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:03,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:04,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:19:04,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:04,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366257599] [2022-11-21 17:19:04,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366257599] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:19:04,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583352318] [2022-11-21 17:19:04,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:19:04,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:19:04,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:04,029 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:19:04,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-21 17:19:04,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:19:04,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:19:04,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:19:04,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:19:04,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:19:04,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:19:04,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:19:04,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583352318] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:19:04,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:19:04,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-11-21 17:19:04,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838341588] [2022-11-21 17:19:04,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:19:04,143 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:19:04,143 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:19:04,143 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:19:04,143 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:19:04,143 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 17:19:04,144 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:04,144 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:19:04,144 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:19:04,144 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration4_Loop [2022-11-21 17:19:04,144 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:19:04,144 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:19:04,146 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:04,149 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:04,159 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:04,217 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:19:04,217 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 17:19:04,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:04,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:04,221 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:04,229 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:19:04,229 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:19:04,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-21 17:19:04,259 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:19:04,259 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 17:19:04,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:04,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:04,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:04,269 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:04,273 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:19:04,273 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:19:04,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-21 17:19:04,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:04,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:04,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:04,313 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:04,317 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 17:19:04,317 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:19:04,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-21 17:19:04,385 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 17:19:04,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-11-21 17:19:04,388 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:19:04,388 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:19:04,388 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:19:04,388 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:19:04,389 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 17:19:04,389 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:04,389 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:19:04,389 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:19:04,389 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration4_Loop [2022-11-21 17:19:04,389 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:19:04,389 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:19:04,390 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:04,410 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:04,415 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:19:04,467 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:19:04,467 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 17:19:04,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:04,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:04,471 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:04,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-21 17:19:04,477 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 [2022-11-21 17:19:04,492 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:19:04,492 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 17:19:04,492 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:19:04,492 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:19:04,492 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:19:04,494 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 17:19:04,494 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 17:19:04,506 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 17:19:04,521 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 17:19:04,521 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-21 17:19:04,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:19:04,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:04,527 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:04,528 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 17:19:04,528 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 17:19:04,528 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 17:19:04,529 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-11-21 17:19:04,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-21 17:19:04,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:04,538 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 17:19:04,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:04,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:19:04,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:19:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:04,575 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:19:04,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:19:04,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:19:04,595 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 [2022-11-21 17:19:04,596 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:19:04,601 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8 states and 9 transitions. Complement of second has 3 states. [2022-11-21 17:19:04,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2022-11-21 17:19:04,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:19:04,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2022-11-21 17:19:04,603 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2022-11-21 17:19:04,603 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:19:04,603 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-21 17:19:04,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:04,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:19:04,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:19:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:04,635 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:19:04,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:19:04,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:19:04,651 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-21 17:19:04,652 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:19:04,656 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8 states and 9 transitions. Complement of second has 3 states. [2022-11-21 17:19:04,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2022-11-21 17:19:04,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:19:04,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2022-11-21 17:19:04,658 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2022-11-21 17:19:04,658 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:19:04,658 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-21 17:19:04,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:04,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:19:04,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:19:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:04,684 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:19:04,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:19:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:19:04,700 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-21 17:19:04,701 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:19:04,710 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 9 states and 10 transitions. Complement of second has 4 states. [2022-11-21 17:19:04,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-21 17:19:04,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:19:04,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-11-21 17:19:04,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2022-11-21 17:19:04,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:19:04,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2022-11-21 17:19:04,713 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:19:04,713 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2022-11-21 17:19:04,713 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:19:04,714 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2022-11-21 17:19:04,714 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-21 17:19:04,714 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2022-11-21 17:19:04,714 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-21 17:19:04,715 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-21 17:19:04,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-21 17:19:04,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:19:04,715 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 17:19:04,715 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 17:19:04,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:04,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:19:04,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:19:04,716 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:19:04,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:19:04,716 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-11-21 17:19:04,717 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-11-21 17:19:04,717 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-21 17:19:04,717 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-11-21 17:19:04,717 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-21 17:19:04,717 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-21 17:19:04,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-21 17:19:04,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:19:04,718 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 17:19:04,718 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 17:19:04,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 17:19:04,718 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 17:19:04,719 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-21 17:19:04,719 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-21 17:19:04,719 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-21 17:19:04,719 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-21 17:19:04,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.11 05:19:04 BoogieIcfgContainer [2022-11-21 17:19:04,727 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-21 17:19:04,727 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 17:19:04,727 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 17:19:04,727 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 17:19:04,728 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:19:00" (3/4) ... [2022-11-21 17:19:04,733 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-21 17:19:04,733 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 17:19:04,734 INFO L158 Benchmark]: Toolchain (without parser) took 4352.77ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 112.5MB in the beginning and 73.3MB in the end (delta: 39.2MB). Peak memory consumption was 68.5MB. Max. memory is 16.1GB. [2022-11-21 17:19:04,734 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 111.1MB. Free memory is still 81.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:19:04,735 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.88ms. Allocated memory is still 144.7MB. Free memory was 112.5MB in the beginning and 116.5MB in the end (delta: -4.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 17:19:04,735 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.37ms. Allocated memory is still 144.7MB. Free memory was 116.5MB in the beginning and 115.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:19:04,735 INFO L158 Benchmark]: Boogie Preprocessor took 21.15ms. Allocated memory is still 144.7MB. Free memory was 115.0MB in the beginning and 114.5MB in the end (delta: 592.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:19:04,736 INFO L158 Benchmark]: RCFGBuilder took 235.24ms. Allocated memory is still 144.7MB. Free memory was 114.5MB in the beginning and 105.3MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 17:19:04,736 INFO L158 Benchmark]: BuchiAutomizer took 3745.38ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 105.3MB in the beginning and 74.4MB in the end (delta: 30.9MB). Peak memory consumption was 62.1MB. Max. memory is 16.1GB. [2022-11-21 17:19:04,736 INFO L158 Benchmark]: Witness Printer took 6.02ms. Allocated memory is still 174.1MB. Free memory was 74.4MB in the beginning and 73.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:19:04,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 111.1MB. Free memory is still 81.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 298.88ms. Allocated memory is still 144.7MB. Free memory was 112.5MB in the beginning and 116.5MB in the end (delta: -4.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.37ms. Allocated memory is still 144.7MB. Free memory was 116.5MB in the beginning and 115.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.15ms. Allocated memory is still 144.7MB. Free memory was 115.0MB in the beginning and 114.5MB in the end (delta: 592.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 235.24ms. Allocated memory is still 144.7MB. Free memory was 114.5MB in the beginning and 105.3MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 3745.38ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 105.3MB in the beginning and 74.4MB in the end (delta: 30.9MB). Peak memory consumption was 62.1MB. Max. memory is 16.1GB. * Witness Printer took 6.02ms. Allocated memory is still 174.1MB. Free memory was 74.4MB in the beginning and 73.3MB in the end (delta: 1.0MB). 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 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * x and consists of 4 locations. One deterministic module has affine ranking function -1 * x and consists of 3 locations. One deterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.6s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 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 [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 29 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax182 hnf100 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq169 hnf95 smp68 dnf100 smp100 tf112 neg94 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 63ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-21 17:19:04,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:04,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:05,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:05,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:05,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d8d3f6-7cc3-4207-90c9-aeed7af8e5e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE