./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/fragtest_simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc 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_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/fragtest_simple.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme --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 32bit --witnessprinter.graph.data.programhash be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:05:41,844 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:05:41,924 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-26 12:05:41,930 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:05:41,931 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:05:41,976 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:05:41,977 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:05:41,978 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:05:41,979 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:05:41,983 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:05:41,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:05:41,985 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:05:41,985 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:05:41,987 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-26 12:05:41,988 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-26 12:05:41,988 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-26 12:05:41,988 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-26 12:05:41,989 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-26 12:05:41,989 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-26 12:05:41,990 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:05:41,990 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-26 12:05:41,991 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:05:41,991 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:05:41,991 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:05:41,992 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:05:41,992 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-26 12:05:41,993 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-26 12:05:41,993 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-26 12:05:41,993 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:05:41,994 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:05:41,994 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:05:41,995 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-26 12:05:41,995 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:05:41,995 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:05:41,996 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:05:41,996 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:05:41,996 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:05:41,997 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-26 12:05:41,997 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_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e [2023-11-26 12:05:42,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:05:42,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:05:42,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:05:42,384 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:05:42,384 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:05:42,386 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/loop-invgen/fragtest_simple.i [2023-11-26 12:05:45,662 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:05:45,886 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:05:45,887 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2023-11-26 12:05:45,894 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/data/d08248ebf/83809c370d15480fa6857fdef0a07f74/FLAG8e4879032 [2023-11-26 12:05:45,919 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/data/d08248ebf/83809c370d15480fa6857fdef0a07f74 [2023-11-26 12:05:45,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:05:45,928 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:05:45,930 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:05:45,930 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:05:45,935 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:05:45,936 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:05:45" (1/1) ... [2023-11-26 12:05:45,937 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26eb29bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:45, skipping insertion in model container [2023-11-26 12:05:45,937 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:05:45" (1/1) ... [2023-11-26 12:05:45,959 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:05:46,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:05:46,167 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:05:46,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:05:46,202 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:05:46,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:46 WrapperNode [2023-11-26 12:05:46,203 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:05:46,204 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:05:46,205 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:05:46,205 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:05:46,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:46" (1/1) ... [2023-11-26 12:05:46,220 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:46" (1/1) ... [2023-11-26 12:05:46,240 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2023-11-26 12:05:46,240 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:05:46,241 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:05:46,241 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:05:46,241 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:05:46,252 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:46" (1/1) ... [2023-11-26 12:05:46,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:46" (1/1) ... [2023-11-26 12:05:46,253 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:46" (1/1) ... [2023-11-26 12:05:46,265 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 12:05:46,266 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:46" (1/1) ... [2023-11-26 12:05:46,266 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:46" (1/1) ... [2023-11-26 12:05:46,269 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:46" (1/1) ... [2023-11-26 12:05:46,273 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:46" (1/1) ... [2023-11-26 12:05:46,274 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:46" (1/1) ... [2023-11-26 12:05:46,275 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:46" (1/1) ... [2023-11-26 12:05:46,277 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:05:46,278 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:05:46,278 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:05:46,278 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:05:46,279 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:46" (1/1) ... [2023-11-26 12:05:46,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:46,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:46,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:46,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-26 12:05:46,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:05:46,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:05:46,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:05:46,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:05:46,413 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:05:46,414 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:05:46,572 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:05:46,581 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:05:46,582 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-26 12:05:46,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:46 BoogieIcfgContainer [2023-11-26 12:05:46,584 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:05:46,585 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-26 12:05:46,585 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-26 12:05:46,589 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-26 12:05:46,590 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 12:05:46,590 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.11 12:05:45" (1/3) ... [2023-11-26 12:05:46,591 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ced6541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 12:05:46, skipping insertion in model container [2023-11-26 12:05:46,592 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 12:05:46,592 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:46" (2/3) ... [2023-11-26 12:05:46,592 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ced6541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 12:05:46, skipping insertion in model container [2023-11-26 12:05:46,592 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 12:05:46,593 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:46" (3/3) ... [2023-11-26 12:05:46,594 INFO L332 chiAutomizerObserver]: Analyzing ICFG fragtest_simple.i [2023-11-26 12:05:46,649 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-26 12:05:46,649 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-26 12:05:46,649 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-26 12:05:46,649 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-26 12:05:46,650 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-26 12:05:46,668 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-26 12:05:46,668 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-26 12:05:46,669 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-26 12:05:46,674 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 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) [2023-11-26 12:05:46,691 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 11 [2023-11-26 12:05:46,692 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 12:05:46,692 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 12:05:46,697 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 12:05:46,697 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-26 12:05:46,697 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-26 12:05:46,698 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 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) [2023-11-26 12:05:46,700 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 11 [2023-11-26 12:05:46,700 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 12:05:46,700 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 12:05:46,700 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 12:05:46,701 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-26 12:05:46,722 INFO L748 eck$LassoCheckResult]: Stem: 15#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~i~0#1, main_~pvlen~0#1, main_~tmp___1~0#1, main_~k~0#1, main_~n~0#1, main_~j~0#1;havoc main_~i~0#1;havoc main_~pvlen~0#1;havoc main_~tmp___1~0#1;main_~k~0#1 := 0;havoc main_~n~0#1;main_~i~0#1 := 0;havoc main_#t~nondet1#1;main_~pvlen~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 9#L31-3true [2023-11-26 12:05:46,722 INFO L750 eck$LassoCheckResult]: Loop: 9#L31-3true havoc main_#t~nondet2#1; 17#L31-1true assume !!(0 != main_#t~nondet2#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet2#1;main_~i~0#1 := 1 + main_~i~0#1; 9#L31-3true [2023-11-26 12:05:46,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:46,728 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-26 12:05:46,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:46,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028262275] [2023-11-26 12:05:46,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:46,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:05:46,826 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:05:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:05:46,852 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:05:46,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:46,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1190, now seen corresponding path program 1 times [2023-11-26 12:05:46,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:46,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495934152] [2023-11-26 12:05:46,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:46,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:05:46,867 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:05:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:05:46,872 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:05:46,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:46,874 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2023-11-26 12:05:46,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:46,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569042263] [2023-11-26 12:05:46,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:46,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:05:46,891 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:05:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:05:46,915 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:05:47,019 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 12:05:47,020 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 12:05:47,020 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 12:05:47,021 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 12:05:47,021 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 12:05:47,021 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:47,021 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 12:05:47,021 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 12:05:47,022 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration1_Loop [2023-11-26 12:05:47,022 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 12:05:47,022 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 12:05:47,038 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 12:05:47,055 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 12:05:47,097 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 12:05:47,098 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 12:05:47,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:47,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:47,105 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:47,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-26 12:05:47,111 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 12:05:47,111 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 12:05:47,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-11-26 12:05:47,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:47,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:47,137 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:47,151 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 12:05:47,151 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 12:05:47,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-26 12:05:47,194 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 12:05:47,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-11-26 12:05:47,199 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 12:05:47,199 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 12:05:47,199 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 12:05:47,200 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 12:05:47,200 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 12:05:47,200 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:47,200 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 12:05:47,200 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 12:05:47,200 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration1_Loop [2023-11-26 12:05:47,201 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 12:05:47,201 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 12:05:47,202 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 12:05:47,212 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 12:05:47,245 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 12:05:47,250 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 12:05:47,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:47,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:47,253 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:47,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-26 12:05:47,265 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 [2023-11-26 12:05:47,276 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 12:05:47,277 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 12:05:47,277 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 12:05:47,277 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 12:05:47,277 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 12:05:47,289 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 12:05:47,289 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 12:05:47,293 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 12:05:47,303 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 12:05:47,303 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-26 12:05:47,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:47,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:47,328 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:47,346 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 12:05:47,346 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 12:05:47,347 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 12:05:47,347 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 2000001 Supporting invariants [] [2023-11-26 12:05:47,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-26 12:05:47,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:05:47,361 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 12:05:47,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:47,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:05:47,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:05:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:47,459 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:05:47,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:05:47,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:47,518 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 [2023-11-26 12:05:47,521 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 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) [2023-11-26 12:05:47,586 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 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 40 states and 59 transitions. Complement of second has 6 states. [2023-11-26 12:05:47,592 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 [2023-11-26 12:05:47,599 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) [2023-11-26 12:05:47,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 31 transitions. [2023-11-26 12:05:47,603 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 31 transitions. Stem has 2 letters. Loop has 2 letters. [2023-11-26 12:05:47,604 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 12:05:47,604 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 31 transitions. Stem has 4 letters. Loop has 2 letters. [2023-11-26 12:05:47,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 12:05:47,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 31 transitions. Stem has 2 letters. Loop has 4 letters. [2023-11-26 12:05:47,612 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 12:05:47,613 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 59 transitions. [2023-11-26 12:05:47,619 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2023-11-26 12:05:47,625 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 18 states and 25 transitions. [2023-11-26 12:05:47,626 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2023-11-26 12:05:47,627 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2023-11-26 12:05:47,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 25 transitions. [2023-11-26 12:05:47,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 12:05:47,628 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18 states and 25 transitions. [2023-11-26 12:05:47,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 25 transitions. [2023-11-26 12:05:47,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-26 12:05:47,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:47,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2023-11-26 12:05:47,661 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 25 transitions. [2023-11-26 12:05:47,661 INFO L428 stractBuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2023-11-26 12:05:47,662 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-26 12:05:47,662 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 25 transitions. [2023-11-26 12:05:47,665 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2023-11-26 12:05:47,666 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 12:05:47,666 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 12:05:47,667 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2023-11-26 12:05:47,667 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-26 12:05:47,667 INFO L748 eck$LassoCheckResult]: Stem: 110#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 101#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~i~0#1, main_~pvlen~0#1, main_~tmp___1~0#1, main_~k~0#1, main_~n~0#1, main_~j~0#1;havoc main_~i~0#1;havoc main_~pvlen~0#1;havoc main_~tmp___1~0#1;main_~k~0#1 := 0;havoc main_~n~0#1;main_~i~0#1 := 0;havoc main_#t~nondet1#1;main_~pvlen~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 102#L31-3 havoc main_#t~nondet2#1; 105#L31-1 assume !(0 != main_#t~nondet2#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet2#1; 111#L31-4 assume !(main_~i~0#1 > main_~pvlen~0#1); 109#L34-1 main_~i~0#1 := 0; 98#L38-3 [2023-11-26 12:05:47,667 INFO L750 eck$LassoCheckResult]: Loop: 98#L38-3 havoc main_#t~nondet3#1; 97#L38-1 assume !!(0 != main_#t~nondet3#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet3#1;main_~tmp___1~0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_~i~0#1;main_~k~0#1 := 1 + main_~k~0#1; 98#L38-3 [2023-11-26 12:05:47,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:47,675 INFO L85 PathProgramCache]: Analyzing trace with hash 889569512, now seen corresponding path program 1 times [2023-11-26 12:05:47,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:47,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798558966] [2023-11-26 12:05:47,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:47,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:05:47,690 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:05:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:05:47,699 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:05:47,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:47,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1830, now seen corresponding path program 1 times [2023-11-26 12:05:47,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:47,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669929913] [2023-11-26 12:05:47,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:47,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:05:47,706 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:05:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:05:47,712 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:05:47,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:47,713 INFO L85 PathProgramCache]: Analyzing trace with hash 177809997, now seen corresponding path program 1 times [2023-11-26 12:05:47,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:47,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903235164] [2023-11-26 12:05:47,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:47,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:05:47,724 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:05:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:05:47,736 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:05:47,776 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 12:05:47,776 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 12:05:47,776 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 12:05:47,776 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 12:05:47,776 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 12:05:47,776 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:47,777 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 12:05:47,777 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 12:05:47,777 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration2_Loop [2023-11-26 12:05:47,777 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 12:05:47,777 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 12:05:47,779 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 12:05:47,783 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 12:05:47,786 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 12:05:47,833 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 12:05:47,833 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 12:05:47,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:47,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:47,835 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:47,847 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 12:05:47,847 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 12:05:47,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-26 12:05:47,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-26 12:05:47,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:47,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:47,883 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:47,889 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 12:05:47,889 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 12:05:47,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-26 12:05:47,926 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 12:05:47,926 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~k~0#1=0} Honda state: {ULTIMATE.start_main_~k~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~k~0#1=-2}, {ULTIMATE.start_main_~k~0#1=6}, {ULTIMATE.start_main_~k~0#1=-3}] Lambdas: [4, 1, 1] Nus: [1, 0] [2023-11-26 12:05:47,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-26 12:05:47,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:47,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:47,938 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:47,950 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 12:05:47,950 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 12:05:47,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-26 12:05:47,975 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 12:05:47,975 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3#1=0} Honda state: {ULTIMATE.start_main_#t~nondet3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 12:05:47,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-26 12:05:47,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:47,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:47,980 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:47,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-26 12:05:47,983 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 12:05:47,983 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 12:05:48,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-26 12:05:48,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:48,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:48,016 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:48,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-26 12:05:48,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 12:05:48,023 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 12:05:48,064 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 12:05:48,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-26 12:05:48,070 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 12:05:48,070 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 12:05:48,070 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 12:05:48,070 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 12:05:48,070 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 12:05:48,070 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:48,070 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 12:05:48,070 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 12:05:48,070 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration2_Loop [2023-11-26 12:05:48,071 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 12:05:48,071 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 12:05:48,072 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 12:05:48,080 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 12:05:48,083 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 12:05:48,147 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 12:05:48,149 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 12:05:48,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:48,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:48,151 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:48,163 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 [2023-11-26 12:05:48,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-26 12:05:48,176 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 12:05:48,177 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 12:05:48,177 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 12:05:48,177 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 12:05:48,177 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 12:05:48,178 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 12:05:48,179 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 12:05:48,192 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 12:05:48,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-26 12:05:48,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:48,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:48,208 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:48,217 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 [2023-11-26 12:05:48,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-26 12:05:48,231 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 12:05:48,231 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 12:05:48,231 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 12:05:48,231 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 12:05:48,231 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 12:05:48,232 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 12:05:48,232 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 12:05:48,242 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 12:05:48,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-26 12:05:48,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:48,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:48,252 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:48,262 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 [2023-11-26 12:05:48,275 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 12:05:48,275 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 12:05:48,276 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 12:05:48,276 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 12:05:48,276 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 12:05:48,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-26 12:05:48,278 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 12:05:48,278 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 12:05:48,292 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 12:05:48,310 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 12:05:48,310 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-26 12:05:48,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:48,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:48,318 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:48,324 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 12:05:48,325 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 12:05:48,325 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 12:05:48,325 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 2000001 Supporting invariants [] [2023-11-26 12:05:48,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-26 12:05:48,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-26 12:05:48,335 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 12:05:48,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:48,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:48,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:05:48,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:05:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:48,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:05:48,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:05:48,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:48,407 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 [2023-11-26 12:05:48,407 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 10 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2023-11-26 12:05:48,437 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 10. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) Result 39 states and 52 transitions. Complement of second has 6 states. [2023-11-26 12:05:48,438 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 [2023-11-26 12:05:48,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2023-11-26 12:05:48,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2023-11-26 12:05:48,440 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 6 letters. Loop has 2 letters. [2023-11-26 12:05:48,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 12:05:48,440 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 8 letters. Loop has 2 letters. [2023-11-26 12:05:48,441 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 12:05:48,441 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 6 letters. Loop has 4 letters. [2023-11-26 12:05:48,441 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 12:05:48,441 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 52 transitions. [2023-11-26 12:05:48,446 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-26 12:05:48,449 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 23 states and 30 transitions. [2023-11-26 12:05:48,449 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2023-11-26 12:05:48,449 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2023-11-26 12:05:48,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2023-11-26 12:05:48,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 12:05:48,450 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 30 transitions. [2023-11-26 12:05:48,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2023-11-26 12:05:48,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2023-11-26 12:05:48,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 21 states have internal predecessors, (29), 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) [2023-11-26 12:05:48,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2023-11-26 12:05:48,453 INFO L240 hiAutomatonCegarLoop]: Abstraction has 22 states and 29 transitions. [2023-11-26 12:05:48,453 INFO L428 stractBuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2023-11-26 12:05:48,453 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-26 12:05:48,453 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 29 transitions. [2023-11-26 12:05:48,454 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-26 12:05:48,454 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 12:05:48,454 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 12:05:48,455 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:48,455 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-26 12:05:48,455 INFO L748 eck$LassoCheckResult]: Stem: 213#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 204#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~i~0#1, main_~pvlen~0#1, main_~tmp___1~0#1, main_~k~0#1, main_~n~0#1, main_~j~0#1;havoc main_~i~0#1;havoc main_~pvlen~0#1;havoc main_~tmp___1~0#1;main_~k~0#1 := 0;havoc main_~n~0#1;main_~i~0#1 := 0;havoc main_#t~nondet1#1;main_~pvlen~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 205#L31-3 havoc main_#t~nondet2#1; 209#L31-1 assume !(0 != main_#t~nondet2#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet2#1; 214#L31-4 assume !(main_~i~0#1 > main_~pvlen~0#1); 212#L34-1 main_~i~0#1 := 0; 202#L38-3 havoc main_#t~nondet3#1; 198#L38-1 assume !(0 != main_#t~nondet3#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet3#1; 199#L38-4 main_~j~0#1 := 0;main_~n~0#1 := main_~i~0#1; 203#L45-2 assume !false;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= 0 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 211#L18 assume !(0 == __VERIFIER_assert_~cond#1); 197#L18-2 [2023-11-26 12:05:48,455 INFO L750 eck$LassoCheckResult]: Loop: 197#L18-2 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;main_~k~0#1 := main_~k~0#1 - 1;main_~i~0#1 := main_~i~0#1 - 1;main_~j~0#1 := 1 + main_~j~0#1; 206#L50 assume !(main_~j~0#1 >= main_~n~0#1); 207#L45-2 assume !false;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= 0 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 217#L18 assume !(0 == __VERIFIER_assert_~cond#1); 197#L18-2 [2023-11-26 12:05:48,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:48,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1442921127, now seen corresponding path program 1 times [2023-11-26 12:05:48,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:48,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096049108] [2023-11-26 12:05:48,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:48,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:05:48,471 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:05:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:05:48,484 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:05:48,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:48,485 INFO L85 PathProgramCache]: Analyzing trace with hash 2836404, now seen corresponding path program 1 times [2023-11-26 12:05:48,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:48,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712832638] [2023-11-26 12:05:48,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:48,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:05:48,494 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:05:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:05:48,508 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:05:48,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:48,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1474117798, now seen corresponding path program 1 times [2023-11-26 12:05:48,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:48,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908000562] [2023-11-26 12:05:48,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:48,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:48,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:48,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908000562] [2023-11-26 12:05:48,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908000562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:48,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:48,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:05:48,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483019181] [2023-11-26 12:05:48,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:48,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-26 12:05:48,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-26 12:05:48,920 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 12:05:48,920 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 12:05:48,920 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 12:05:48,920 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 12:05:48,921 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 12:05:48,921 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:48,921 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 12:05:48,921 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 12:05:48,921 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration3_Loop [2023-11-26 12:05:48,921 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 12:05:48,921 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 12:05:48,923 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 12:05:48,931 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 12:05:48,949 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 12:05:48,954 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 12:05:48,960 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 12:05:49,033 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 12:05:49,033 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 12:05:49,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:49,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:49,035 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:49,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-26 12:05:49,043 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 12:05:49,043 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 12:05:49,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-26 12:05:49,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:49,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:49,082 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:49,094 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 12:05:49,094 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 12:05:49,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-26 12:05:49,408 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 12:05:49,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2023-11-26 12:05:49,413 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 12:05:49,413 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 12:05:49,413 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 12:05:49,413 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 12:05:49,413 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 12:05:49,413 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:49,413 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 12:05:49,414 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 12:05:49,414 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration3_Loop [2023-11-26 12:05:49,414 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 12:05:49,414 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 12:05:49,415 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 12:05:49,431 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 12:05:49,438 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 12:05:49,443 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 12:05:49,449 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 12:05:49,531 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 12:05:49,531 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 12:05:49,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:49,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:49,533 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:49,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-26 12:05:49,541 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 [2023-11-26 12:05:49,554 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 12:05:49,554 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 12:05:49,554 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 12:05:49,554 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 12:05:49,554 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 12:05:49,556 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 12:05:49,556 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 12:05:49,572 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 12:05:49,575 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 12:05:49,576 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-26 12:05:49,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:05:49,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:49,577 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:49,586 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 12:05:49,586 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 12:05:49,586 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 12:05:49,587 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~j~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2023-11-26 12:05:49,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-26 12:05:49,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-26 12:05:49,597 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 12:05:49,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:49,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:05:49,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:05:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:49,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:05:49,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:05:49,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:49,724 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-26 12:05:49,725 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 10 Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:49,752 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 10. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 44 transitions. Complement of second has 7 states. [2023-11-26 12:05:49,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-26 12:05:49,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:49,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2023-11-26 12:05:49,758 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 11 letters. Loop has 4 letters. [2023-11-26 12:05:49,759 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 12:05:49,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 15 letters. Loop has 4 letters. [2023-11-26 12:05:49,760 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 12:05:49,760 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 11 letters. Loop has 8 letters. [2023-11-26 12:05:49,760 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 12:05:49,761 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 44 transitions. [2023-11-26 12:05:49,764 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-26 12:05:49,764 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 0 states and 0 transitions. [2023-11-26 12:05:49,765 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-26 12:05:49,765 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-26 12:05:49,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-26 12:05:49,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:49,765 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 12:05:49,765 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 12:05:49,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:49,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:05:49,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:05:49,770 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:49,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:49,773 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-26 12:05:49,773 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-26 12:05:49,773 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-26 12:05:49,774 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-26 12:05:49,774 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-26 12:05:49,774 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-26 12:05:49,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-26 12:05:49,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:49,774 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 12:05:49,774 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 12:05:49,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:05:49,776 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 12:05:49,777 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-26 12:05:49,777 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-26 12:05:49,777 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-26 12:05:49,777 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-26 12:05:49,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.11 12:05:49 BoogieIcfgContainer [2023-11-26 12:05:49,791 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-26 12:05:49,792 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 12:05:49,792 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 12:05:49,792 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 12:05:49,793 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:46" (3/4) ... [2023-11-26 12:05:49,795 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 12:05:49,796 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 12:05:49,798 INFO L158 Benchmark]: Toolchain (without parser) took 3868.73ms. Allocated memory was 136.3MB in the beginning and 203.4MB in the end (delta: 67.1MB). Free memory was 91.8MB in the beginning and 139.9MB in the end (delta: -48.1MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2023-11-26 12:05:49,798 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 136.3MB. Free memory is still 109.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:05:49,799 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.87ms. Allocated memory is still 136.3MB. Free memory was 91.8MB in the beginning and 80.9MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 12:05:49,799 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.06ms. Allocated memory is still 136.3MB. Free memory was 80.9MB in the beginning and 79.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:05:49,800 INFO L158 Benchmark]: Boogie Preprocessor took 36.01ms. Allocated memory is still 136.3MB. Free memory was 79.5MB in the beginning and 77.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:05:49,808 INFO L158 Benchmark]: RCFGBuilder took 306.01ms. Allocated memory is still 136.3MB. Free memory was 77.8MB in the beginning and 67.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 12:05:49,809 INFO L158 Benchmark]: BuchiAutomizer took 3206.42ms. Allocated memory was 136.3MB in the beginning and 203.4MB in the end (delta: 67.1MB). Free memory was 67.8MB in the beginning and 140.9MB in the end (delta: -73.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:05:49,809 INFO L158 Benchmark]: Witness Printer took 4.37ms. Allocated memory is still 203.4MB. Free memory was 140.9MB in the beginning and 139.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:05:49,811 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 136.3MB. Free memory is still 109.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.87ms. Allocated memory is still 136.3MB. Free memory was 91.8MB in the beginning and 80.9MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.06ms. Allocated memory is still 136.3MB. Free memory was 80.9MB in the beginning and 79.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.01ms. Allocated memory is still 136.3MB. Free memory was 79.5MB in the beginning and 77.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 306.01ms. Allocated memory is still 136.3MB. Free memory was 77.8MB in the beginning and 67.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 3206.42ms. Allocated memory was 136.3MB in the beginning and 203.4MB in the end (delta: 67.1MB). Free memory was 67.8MB in the beginning and 140.9MB in the end (delta: -73.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.37ms. Allocated memory is still 203.4MB. Free memory was 140.9MB in the beginning and 139.9MB 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 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function ((-2 * i) + 2000001) and consists of 4 locations. One deterministic module has affine ranking function ((-2 * i) + 2000001) and consists of 4 locations. One deterministic module has affine ranking function ((-1 * j) + n) and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.1s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 2.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 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, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 35 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax100 hnf100 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq162 hnf93 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 95ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 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! [2023-11-26 12:05:49,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2023-11-26 12:05:50,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082f0eae-ac50-457c-ba18-a00684e48858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE