./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/AlternKonv.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/AlternKonv.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9816d5cc9e8c1fba9291af90498afaa319416e5c56fa3cf3ce8da9d63d3e9939 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:15:34,591 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:15:34,724 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-21 22:15:34,734 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:15:34,735 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:15:34,776 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:15:34,777 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:15:34,778 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:15:34,779 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:15:34,779 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:15:34,780 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:15:34,781 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:15:34,781 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:15:34,786 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-21 22:15:34,787 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-21 22:15:34,788 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-21 22:15:34,788 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-21 22:15:34,788 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-21 22:15:34,789 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-21 22:15:34,789 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:15:34,790 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-21 22:15:34,790 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:15:34,791 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:15:34,791 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-21 22:15:34,791 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-21 22:15:34,792 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-21 22:15:34,792 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:15:34,793 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:15:34,793 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-21 22:15:34,794 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:15:34,795 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:15:34,795 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:15:34,796 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:15:34,796 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:15:34,797 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-21 22:15:34,797 INFO L153 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_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9816d5cc9e8c1fba9291af90498afaa319416e5c56fa3cf3ce8da9d63d3e9939 [2023-11-21 22:15:35,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:15:35,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:15:35,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:15:35,205 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:15:35,205 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:15:35,207 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/termination-restricted-15/AlternKonv.c [2023-11-21 22:15:38,428 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:15:38,656 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:15:38,656 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/sv-benchmarks/c/termination-restricted-15/AlternKonv.c [2023-11-21 22:15:38,665 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/data/3d675f3b3/2b0919d9af724c859df6e199d02184c5/FLAGf2ffe94cb [2023-11-21 22:15:38,681 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/data/3d675f3b3/2b0919d9af724c859df6e199d02184c5 [2023-11-21 22:15:38,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:15:38,688 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:15:38,692 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:15:38,693 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:15:38,699 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:15:38,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:15:38" (1/1) ... [2023-11-21 22:15:38,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52d48924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:15:38, skipping insertion in model container [2023-11-21 22:15:38,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:15:38" (1/1) ... [2023-11-21 22:15:38,722 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:15:38,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:15:38,905 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:15:38,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:15:38,940 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:15:38,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:15:38 WrapperNode [2023-11-21 22:15:38,941 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:15:38,942 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:15:38,942 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:15:38,943 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:15:38,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:15:38" (1/1) ... [2023-11-21 22:15:38,956 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:15:38" (1/1) ... [2023-11-21 22:15:38,975 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2023-11-21 22:15:38,976 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:15:38,976 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:15:38,977 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:15:38,977 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:15:38,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:15:38" (1/1) ... [2023-11-21 22:15:38,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:15:38" (1/1) ... [2023-11-21 22:15:38,991 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:15:38" (1/1) ... [2023-11-21 22:15:38,997 INFO L187 HeapSplitter]: Split 0 memory accesses to 0 slices as follows [] [2023-11-21 22:15:38,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:15:38" (1/1) ... [2023-11-21 22:15:38,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:15:38" (1/1) ... [2023-11-21 22:15:39,001 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:15:38" (1/1) ... [2023-11-21 22:15:39,005 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:15:38" (1/1) ... [2023-11-21 22:15:39,006 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:15:38" (1/1) ... [2023-11-21 22:15:39,007 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:15:38" (1/1) ... [2023-11-21 22:15:39,014 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:15:39,016 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:15:39,016 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:15:39,016 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:15:39,017 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:15:38" (1/1) ... [2023-11-21 22:15:39,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:15:39,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:15:39,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:15:39,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-21 22:15:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:15:39,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:15:39,178 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:15:39,180 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:15:39,267 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:15:39,277 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:15:39,277 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:15:39,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:15:39 BoogieIcfgContainer [2023-11-21 22:15:39,279 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:15:39,281 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-21 22:15:39,281 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-21 22:15:39,285 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-21 22:15:39,285 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:15:39,286 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 10:15:38" (1/3) ... [2023-11-21 22:15:39,287 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@59eb2bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 10:15:39, skipping insertion in model container [2023-11-21 22:15:39,287 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:15:39,287 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:15:38" (2/3) ... [2023-11-21 22:15:39,288 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@59eb2bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 10:15:39, skipping insertion in model container [2023-11-21 22:15:39,288 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:15:39,288 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:15:39" (3/3) ... [2023-11-21 22:15:39,290 INFO L332 chiAutomizerObserver]: Analyzing ICFG AlternKonv.c [2023-11-21 22:15:39,344 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-21 22:15:39,345 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-21 22:15:39,345 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-21 22:15:39,345 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-21 22:15:39,345 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-21 22:15:39,346 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-21 22:15:39,346 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-21 22:15:39,346 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-21 22:15:39,355 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:39,371 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-21 22:15:39,372 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:15:39,372 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:15:39,379 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 22:15:39,379 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-21 22:15:39,379 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-21 22:15:39,380 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:39,381 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-21 22:15:39,381 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:15:39,382 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:15:39,382 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 22:15:39,382 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-21 22:15:39,389 INFO L748 eck$LassoCheckResult]: Stem: 8#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 6#L18-2true [2023-11-21 22:15:39,389 INFO L750 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(0 != main_~i~0#1); 7#L10true assume !(main_~i~0#1 < 0);main_~i~0#1 := main_~i~0#1 - 2; 3#L18true assume !(main_~i~0#1 > 0); 6#L18-2true [2023-11-21 22:15:39,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:39,394 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-21 22:15:39,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:39,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337823593] [2023-11-21 22:15:39,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:39,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:15:39,493 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:15:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:15:39,513 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:15:39,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:39,516 INFO L85 PathProgramCache]: Analyzing trace with hash 41231, now seen corresponding path program 1 times [2023-11-21 22:15:39,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:39,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558155374] [2023-11-21 22:15:39,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:39,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:15:39,531 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:15:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:15:39,537 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:15:39,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:39,539 INFO L85 PathProgramCache]: Analyzing trace with hash 28700173, now seen corresponding path program 1 times [2023-11-21 22:15:39,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:39,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140595809] [2023-11-21 22:15:39,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:39,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:15:39,549 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:15:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:15:39,555 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:15:39,677 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 22:15:39,677 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 22:15:39,677 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 22:15:39,678 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 22:15:39,678 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-21 22:15:39,678 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:15:39,678 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 22:15:39,678 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 22:15:39,678 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration1_Loop [2023-11-21 22:15:39,679 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 22:15:39,679 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 22:15:39,701 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:15:39,723 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:15:39,738 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:15:39,857 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 22:15:39,858 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-21 22:15:39,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:15:39,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:15:39,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:15:39,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-21 22:15:39,872 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:15:39,872 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:15:39,903 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:15:39,903 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: [] [2023-11-21 22:15:39,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-11-21 22:15:39,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:15:39,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:15:39,917 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:15:39,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-21 22:15:39,925 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:15:39,925 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:15:39,948 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:15:39,948 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: [] [2023-11-21 22:15:39,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-11-21 22:15:39,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:15:39,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:15:39,963 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:15:39,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-21 22:15:39,974 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:15:39,974 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:15:40,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:15:40,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:15:40,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:15:40,019 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:15:40,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-21 22:15:40,025 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-21 22:15:40,025 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:15:40,061 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-21 22:15:40,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:15:40,065 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 22:15:40,065 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 22:15:40,065 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 22:15:40,065 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 22:15:40,065 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-21 22:15:40,065 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:15:40,066 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 22:15:40,066 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 22:15:40,066 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration1_Loop [2023-11-21 22:15:40,066 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 22:15:40,066 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 22:15:40,068 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:15:40,077 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:15:40,086 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:15:40,183 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 22:15:40,188 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-21 22:15:40,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:15:40,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:15:40,191 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:15:40,194 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 [2023-11-21 22:15:40,208 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:15:40,208 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:15:40,208 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:15:40,208 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:15:40,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-21 22:15:40,235 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-21 22:15:40,235 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-21 22:15:40,261 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:15:40,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-21 22:15:40,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:15:40,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:15:40,282 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:15:40,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-21 22:15:40,296 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 [2023-11-21 22:15:40,306 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:15:40,307 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:15:40,307 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:15:40,307 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:15:40,312 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-21 22:15:40,312 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-21 22:15:40,356 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:15:40,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-21 22:15:40,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:15:40,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:15:40,377 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:15:40,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-21 22:15:40,380 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 [2023-11-21 22:15:40,390 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:15:40,391 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:15:40,391 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:15:40,391 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:15:40,392 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:15:40,395 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:15:40,396 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:15:40,416 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-21 22:15:40,419 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-21 22:15:40,419 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-21 22:15:40,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:15:40,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:15:40,445 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:15:40,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-21 22:15:40,451 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-21 22:15:40,452 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-21 22:15:40,452 INFO L513 LassoAnalysis]: Proved termination. [2023-11-21 22:15:40,452 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-11-21 22:15:40,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-21 22:15:40,467 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-21 22:15:40,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:40,507 WARN L260 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:15:40,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:15:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:40,526 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:15:40,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:15:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:40,673 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 [2023-11-21 22:15:40,676 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:40,738 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 44 transitions. Complement of second has 6 states. [2023-11-21 22:15:40,740 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 [2023-11-21 22:15:40,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:40,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2023-11-21 22:15:40,749 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 2 letters. Loop has 3 letters. [2023-11-21 22:15:40,750 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:15:40,750 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 5 letters. Loop has 3 letters. [2023-11-21 22:15:40,751 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:15:40,751 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 2 letters. Loop has 6 letters. [2023-11-21 22:15:40,752 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:15:40,753 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 44 transitions. [2023-11-21 22:15:40,761 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-21 22:15:40,766 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 15 states and 22 transitions. [2023-11-21 22:15:40,767 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2023-11-21 22:15:40,768 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2023-11-21 22:15:40,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 22 transitions. [2023-11-21 22:15:40,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 22:15:40,769 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 22 transitions. [2023-11-21 22:15:40,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 22 transitions. [2023-11-21 22:15:40,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-11-21 22:15:40,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:40,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 21 transitions. [2023-11-21 22:15:40,802 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 21 transitions. [2023-11-21 22:15:40,802 INFO L428 stractBuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2023-11-21 22:15:40,802 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-21 22:15:40,802 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 21 transitions. [2023-11-21 22:15:40,803 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-21 22:15:40,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:15:40,804 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:15:40,804 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-21 22:15:40,804 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-21 22:15:40,805 INFO L748 eck$LassoCheckResult]: Stem: 88#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 89#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 90#L18-2 assume !!(0 != main_~i~0#1); 85#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 87#L12 [2023-11-21 22:15:40,805 INFO L750 eck$LassoCheckResult]: Loop: 87#L12 assume !(main_~i~0#1 < 0); 79#L18-2 assume !!(0 != main_~i~0#1); 91#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 87#L12 [2023-11-21 22:15:40,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:40,806 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-11-21 22:15:40,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:40,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899160741] [2023-11-21 22:15:40,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:40,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:15:40,813 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:15:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:15:40,818 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:15:40,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:40,819 INFO L85 PathProgramCache]: Analyzing trace with hash 53210, now seen corresponding path program 1 times [2023-11-21 22:15:40,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:40,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367654796] [2023-11-21 22:15:40,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:40,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:40,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:40,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:40,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367654796] [2023-11-21 22:15:40,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367654796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:40,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:40,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:15:40,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788665729] [2023-11-21 22:15:40,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:40,872 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 22:15:40,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:40,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:15:40,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:15:40,877 INFO L87 Difference]: Start difference. First operand 14 states and 21 transitions. cyclomatic complexity: 9 Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:40,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:15:40,899 INFO L93 Difference]: Finished difference Result 16 states and 23 transitions. [2023-11-21 22:15:40,900 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2023-11-21 22:15:40,901 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-21 22:15:40,901 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 23 transitions. [2023-11-21 22:15:40,902 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-21 22:15:40,902 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-11-21 22:15:40,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 23 transitions. [2023-11-21 22:15:40,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 22:15:40,902 INFO L218 hiAutomatonCegarLoop]: Abstraction has 16 states and 23 transitions. [2023-11-21 22:15:40,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 23 transitions. [2023-11-21 22:15:40,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-21 22:15:40,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.4375) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:40,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 23 transitions. [2023-11-21 22:15:40,905 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 23 transitions. [2023-11-21 22:15:40,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:15:40,907 INFO L428 stractBuchiCegarLoop]: Abstraction has 16 states and 23 transitions. [2023-11-21 22:15:40,907 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-21 22:15:40,907 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 23 transitions. [2023-11-21 22:15:40,908 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-21 22:15:40,908 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:15:40,909 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:15:40,909 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-21 22:15:40,909 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-21 22:15:40,909 INFO L748 eck$LassoCheckResult]: Stem: 126#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 127#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 128#L18-2 assume !!(0 != main_~i~0#1); 124#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 125#L12 [2023-11-21 22:15:40,910 INFO L750 eck$LassoCheckResult]: Loop: 125#L12 assume main_~i~0#1 < 0; 120#L13 assume !(main_~i~0#1 <= -2147483648);main_~i~0#1 := -1 * main_~i~0#1; 115#L18-2 assume !!(0 != main_~i~0#1); 129#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 125#L12 [2023-11-21 22:15:40,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:40,910 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 2 times [2023-11-21 22:15:40,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:40,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953776238] [2023-11-21 22:15:40,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:40,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:15:40,917 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:15:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:15:40,922 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:15:40,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:40,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1451465, now seen corresponding path program 1 times [2023-11-21 22:15:40,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:40,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841767292] [2023-11-21 22:15:40,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:40,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:40,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:40,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:40,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841767292] [2023-11-21 22:15:40,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841767292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:40,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:40,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:15:40,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257280889] [2023-11-21 22:15:40,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:40,969 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 22:15:40,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:40,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:15:40,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:15:40,970 INFO L87 Difference]: Start difference. First operand 16 states and 23 transitions. cyclomatic complexity: 9 Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:41,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:15:41,003 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2023-11-21 22:15:41,003 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 28 transitions. [2023-11-21 22:15:41,004 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2023-11-21 22:15:41,005 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 21 states and 27 transitions. [2023-11-21 22:15:41,005 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-11-21 22:15:41,006 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2023-11-21 22:15:41,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 27 transitions. [2023-11-21 22:15:41,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 22:15:41,006 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-11-21 22:15:41,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 27 transitions. [2023-11-21 22:15:41,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2023-11-21 22:15:41,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:41,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2023-11-21 22:15:41,009 INFO L240 hiAutomatonCegarLoop]: Abstraction has 15 states and 21 transitions. [2023-11-21 22:15:41,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:15:41,011 INFO L428 stractBuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2023-11-21 22:15:41,011 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-21 22:15:41,011 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 21 transitions. [2023-11-21 22:15:41,012 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2023-11-21 22:15:41,012 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:15:41,012 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:15:41,013 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-21 22:15:41,013 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2023-11-21 22:15:41,013 INFO L748 eck$LassoCheckResult]: Stem: 169#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 170#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 171#L18-2 assume !!(0 != main_~i~0#1); 166#L10 [2023-11-21 22:15:41,013 INFO L750 eck$LassoCheckResult]: Loop: 166#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 168#L12 assume !(main_~i~0#1 < 0); 165#L18-2 assume !!(0 != main_~i~0#1); 172#L10 assume !(main_~i~0#1 < 0);main_~i~0#1 := main_~i~0#1 - 2; 159#L18 assume main_~i~0#1 > 0;main_~i~0#1 := -1 * main_~i~0#1; 161#L18-2 assume !!(0 != main_~i~0#1); 166#L10 [2023-11-21 22:15:41,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:41,014 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-11-21 22:15:41,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:41,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365030785] [2023-11-21 22:15:41,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:41,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:15:41,019 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:15:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:15:41,023 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:15:41,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:41,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1310830888, now seen corresponding path program 1 times [2023-11-21 22:15:41,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:41,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597399582] [2023-11-21 22:15:41,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:41,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:41,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:41,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597399582] [2023-11-21 22:15:41,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597399582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:41,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:41,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:15:41,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891868672] [2023-11-21 22:15:41,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:41,074 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 22:15:41,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:41,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:15:41,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:15:41,075 INFO L87 Difference]: Start difference. First operand 15 states and 21 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:41,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:15:41,109 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2023-11-21 22:15:41,109 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 33 transitions. [2023-11-21 22:15:41,111 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2023-11-21 22:15:41,111 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 25 states and 31 transitions. [2023-11-21 22:15:41,112 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2023-11-21 22:15:41,112 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2023-11-21 22:15:41,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 31 transitions. [2023-11-21 22:15:41,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 22:15:41,113 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-11-21 22:15:41,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 31 transitions. [2023-11-21 22:15:41,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 17. [2023-11-21 22:15:41,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:41,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2023-11-21 22:15:41,116 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 23 transitions. [2023-11-21 22:15:41,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:15:41,117 INFO L428 stractBuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2023-11-21 22:15:41,118 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-21 22:15:41,118 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 23 transitions. [2023-11-21 22:15:41,118 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2023-11-21 22:15:41,119 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:15:41,119 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:15:41,119 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-21 22:15:41,119 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2023-11-21 22:15:41,119 INFO L748 eck$LassoCheckResult]: Stem: 214#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 215#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 216#L18-2 assume !!(0 != main_~i~0#1); 212#L10 [2023-11-21 22:15:41,120 INFO L750 eck$LassoCheckResult]: Loop: 212#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 217#L12 assume !(main_~i~0#1 < 0); 218#L18-2 assume !!(0 != main_~i~0#1); 213#L10 assume !(main_~i~0#1 < 0);main_~i~0#1 := main_~i~0#1 - 2; 208#L18 assume !(main_~i~0#1 > 0); 209#L18-2 assume !!(0 != main_~i~0#1); 212#L10 [2023-11-21 22:15:41,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:41,120 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 2 times [2023-11-21 22:15:41,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:41,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407595882] [2023-11-21 22:15:41,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:41,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:15:41,125 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:15:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:15:41,128 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:15:41,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:41,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1310830950, now seen corresponding path program 1 times [2023-11-21 22:15:41,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:41,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009670551] [2023-11-21 22:15:41,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:41,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:15:41,135 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:15:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:15:41,140 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:15:41,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:41,141 INFO L85 PathProgramCache]: Analyzing trace with hash 590073037, now seen corresponding path program 1 times [2023-11-21 22:15:41,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:41,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792609490] [2023-11-21 22:15:41,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:41,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:15:41,148 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:15:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:15:41,153 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:15:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:15:41,224 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:15:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:15:41,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.11 10:15:41 BoogieIcfgContainer [2023-11-21 22:15:41,249 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-21 22:15:41,249 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:15:41,250 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:15:41,250 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:15:41,250 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:15:39" (3/4) ... [2023-11-21 22:15:41,251 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-21 22:15:41,284 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:15:41,284 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:15:41,285 INFO L158 Benchmark]: Toolchain (without parser) took 2596.29ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 114.5MB in the beginning and 123.0MB in the end (delta: -8.5MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. [2023-11-21 22:15:41,285 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 161.5MB. Free memory was 133.5MB in the beginning and 133.4MB in the end (delta: 137.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:15:41,286 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.03ms. Allocated memory is still 161.5MB. Free memory was 114.5MB in the beginning and 105.0MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-21 22:15:41,286 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.53ms. Allocated memory is still 161.5MB. Free memory was 105.0MB in the beginning and 104.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:15:41,287 INFO L158 Benchmark]: Boogie Preprocessor took 38.15ms. Allocated memory is still 161.5MB. Free memory was 103.6MB in the beginning and 102.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:15:41,287 INFO L158 Benchmark]: RCFGBuilder took 263.93ms. Allocated memory is still 161.5MB. Free memory was 102.4MB in the beginning and 93.5MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-21 22:15:41,288 INFO L158 Benchmark]: BuchiAutomizer took 1968.22ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 93.5MB in the beginning and 124.1MB in the end (delta: -30.5MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. [2023-11-21 22:15:41,288 INFO L158 Benchmark]: Witness Printer took 34.62ms. Allocated memory is still 195.0MB. Free memory was 124.1MB in the beginning and 123.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:15:41,291 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 161.5MB. Free memory was 133.5MB in the beginning and 133.4MB in the end (delta: 137.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.03ms. Allocated memory is still 161.5MB. Free memory was 114.5MB in the beginning and 105.0MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.53ms. Allocated memory is still 161.5MB. Free memory was 105.0MB in the beginning and 104.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.15ms. Allocated memory is still 161.5MB. Free memory was 103.6MB in the beginning and 102.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 263.93ms. Allocated memory is still 161.5MB. Free memory was 102.4MB in the beginning and 93.5MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1968.22ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 93.5MB in the beginning and 124.1MB in the end (delta: -30.5MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. * Witness Printer took 34.62ms. Allocated memory is still 195.0MB. Free memory was 124.1MB in the beginning and 123.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (3 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 17 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 69 IncrementalHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 30 mSDtfsCounter, 69 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax170 hnf100 lsp58 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf96 smp69 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 71ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 10]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i != 0 VAL [i=-1] Loop: [L10] COND TRUE i < 0 [L11] i = i+2 [L12] COND FALSE !(i < 0) [L9] COND TRUE i != 0 [L10] COND FALSE !(i < 0) [L17] i = i-2 [L18] COND FALSE !(i > 0) [L9] COND TRUE i != 0 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i != 0 VAL [i=-1] Loop: [L10] COND TRUE i < 0 [L11] i = i+2 [L12] COND FALSE !(i < 0) [L9] COND TRUE i != 0 [L10] COND FALSE !(i < 0) [L17] i = i-2 [L18] COND FALSE !(i > 0) [L9] COND TRUE i != 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-21 22:15:41,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-21 22:15:41,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e64852e-c380-48b4-9474-a21926958689/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)