./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-bwb/and-06.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/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_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-bwb/and-06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/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 64bit --witnessprinter.graph.data.programhash d5d25da990643b4b5025c4e511382360ecc906ce1073cabf600162c7aef9f4cd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:47:16,812 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:47:16,933 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-26 11:47:16,939 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:47:16,939 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:47:16,968 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:47:16,969 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:47:16,970 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:47:16,971 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:47:16,972 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:47:16,973 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:47:16,973 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:47:16,974 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:47:16,975 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-26 11:47:16,975 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-26 11:47:16,976 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-26 11:47:16,977 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-26 11:47:16,977 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-26 11:47:16,978 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-26 11:47:16,978 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:47:16,979 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-26 11:47:16,980 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:47:16,981 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:47:16,981 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-26 11:47:16,982 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-26 11:47:16,982 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-26 11:47:16,983 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:47:16,983 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:47:16,984 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-26 11:47:16,984 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:47:16,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:47:16,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:47:16,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:47:16,986 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:47:16,987 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-26 11:47:16,988 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_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5d25da990643b4b5025c4e511382360ecc906ce1073cabf600162c7aef9f4cd [2023-11-26 11:47:17,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:47:17,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:47:17,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:47:17,282 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:47:17,283 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:47:17,285 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/termination-bwb/and-06.c [2023-11-26 11:47:20,377 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:47:20,629 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:47:20,630 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/sv-benchmarks/c/termination-bwb/and-06.c [2023-11-26 11:47:20,639 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/data/3dd0995fc/08c72626cf194cc59588578fb9081e6e/FLAG9511e86bd [2023-11-26 11:47:20,667 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/data/3dd0995fc/08c72626cf194cc59588578fb9081e6e [2023-11-26 11:47:20,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:47:20,677 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:47:20,680 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:47:20,680 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:47:20,688 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:47:20,689 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:20,690 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@368cc5b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20, skipping insertion in model container [2023-11-26 11:47:20,690 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:20,717 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:47:20,918 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:47:20,925 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:47:20,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:47:20,956 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:47:20,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20 WrapperNode [2023-11-26 11:47:20,957 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:47:20,958 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:47:20,958 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:47:20,958 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:47:20,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:20,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:20,993 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2023-11-26 11:47:20,993 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:47:20,994 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:47:20,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:47:20,995 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:47:21,008 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:21,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:21,017 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:21,031 INFO L175 MemorySlicer]: No memory access in input program. [2023-11-26 11:47:21,032 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:21,032 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:21,036 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:21,039 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:21,040 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:21,041 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:21,043 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:47:21,044 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:47:21,044 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:47:21,044 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:47:21,045 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:21,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:21,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:21,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:21,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-26 11:47:21,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:47:21,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:47:21,200 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:47:21,203 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:47:21,340 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:47:21,350 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:47:21,356 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:47:21,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:21 BoogieIcfgContainer [2023-11-26 11:47:21,359 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:47:21,362 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-26 11:47:21,363 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-26 11:47:21,368 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-26 11:47:21,369 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 11:47:21,370 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.11 11:47:20" (1/3) ... [2023-11-26 11:47:21,372 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1293d904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 11:47:21, skipping insertion in model container [2023-11-26 11:47:21,372 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 11:47:21,372 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (2/3) ... [2023-11-26 11:47:21,375 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1293d904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 11:47:21, skipping insertion in model container [2023-11-26 11:47:21,376 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 11:47:21,376 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:21" (3/3) ... [2023-11-26 11:47:21,383 INFO L332 chiAutomizerObserver]: Analyzing ICFG and-06.c [2023-11-26 11:47:21,478 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-26 11:47:21,478 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-26 11:47:21,478 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-26 11:47:21,478 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-26 11:47:21,479 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-26 11:47:21,479 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-26 11:47:21,479 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-26 11:47:21,479 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-26 11:47:21,484 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:21,504 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-26 11:47:21,504 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:47:21,505 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:47:21,511 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 11:47:21,511 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-26 11:47:21,511 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-26 11:47:21,512 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:21,513 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-26 11:47:21,514 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:47:21,514 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:47:21,515 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 11:47:21,515 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-26 11:47:21,524 INFO L748 eck$LassoCheckResult]: Stem: 10#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 4#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~post2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 8#L18-2true [2023-11-26 11:47:21,524 INFO L750 eck$LassoCheckResult]: Loop: 8#L18-2true assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 6#L18true assume !(main_~a~0#1 > 0); 9#L21true assume 0 == main_~x~0#1 || 0 == main_~x~0#1 - 1;main_#t~nondet4#1 := 0; 13#L21-4true main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 8#L18-2true [2023-11-26 11:47:21,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:21,532 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-26 11:47:21,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:21,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590379727] [2023-11-26 11:47:21,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:21,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:21,624 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:47:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:21,647 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:47:21,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:21,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1279131, now seen corresponding path program 1 times [2023-11-26 11:47:21,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:21,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258307048] [2023-11-26 11:47:21,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:21,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:21,674 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:47:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:21,683 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:47:21,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:21,685 INFO L85 PathProgramCache]: Analyzing trace with hash 889706333, now seen corresponding path program 1 times [2023-11-26 11:47:21,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:21,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157031693] [2023-11-26 11:47:21,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:21,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:21,702 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:47:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:21,710 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:47:21,851 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:47:21,852 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:47:21,852 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:47:21,852 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:47:21,852 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 11:47:21,853 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:21,853 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:47:21,853 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:47:21,853 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-06.c_Iteration1_Loop [2023-11-26 11:47:21,853 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:47:21,854 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:47:21,873 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 11:47:21,891 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 11:47:21,895 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 11:47:21,904 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 11:47:21,960 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:47:21,961 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 11:47:21,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:21,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:21,964 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:21,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-26 11:47:21,969 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:47:21,976 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:47:22,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:22,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:22,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:22,013 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:22,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-26 11:47:22,018 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 11:47:22,018 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:47:22,147 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:47:22,148 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~a~0#1=1} Honda state: {ULTIMATE.start_main_~a~0#1=1} Generalized eigenvectors: [{ULTIMATE.start_main_~a~0#1=0}, {ULTIMATE.start_main_~a~0#1=-1}, {ULTIMATE.start_main_~a~0#1=0}] Lambdas: [12, 1, 1] Nus: [0, 0] [2023-11-26 11:47:22,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:22,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:22,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:22,159 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:22,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-26 11:47:22,168 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:47:22,168 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:47:22,199 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:47:22,199 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4#1=0} Honda state: {ULTIMATE.start_main_#t~nondet4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:47:22,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-11-26 11:47:22,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:22,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:22,212 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:22,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-26 11:47:22,235 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:47:22,235 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:47:22,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:22,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:22,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:22,283 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:22,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-26 11:47:22,289 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 11:47:22,290 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:47:22,315 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 11:47:22,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:22,320 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:47:22,320 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:47:22,320 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:47:22,320 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:47:22,321 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 11:47:22,321 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:22,321 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:47:22,321 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:47:22,321 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-06.c_Iteration1_Loop [2023-11-26 11:47:22,321 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:47:22,321 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:47:22,323 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 11:47:22,333 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 11:47:22,337 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 11:47:22,364 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 11:47:22,425 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:47:22,430 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 11:47:22,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:22,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:22,434 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:22,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-26 11:47:22,437 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 11:47:22,448 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:47:22,448 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:47:22,449 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:47:22,449 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:47:22,449 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:47:22,453 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:47:22,454 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:47:22,475 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:47:22,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:22,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:22,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:22,485 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:22,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-26 11:47:22,493 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 11:47:22,505 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:47:22,505 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:47:22,505 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:47:22,505 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:47:22,505 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:47:22,507 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:47:22,507 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:47:22,517 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:47:22,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:22,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:22,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:22,528 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:22,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-26 11:47:22,533 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 11:47:22,545 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:47:22,546 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:47:22,546 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:47:22,546 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:47:22,546 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:47:22,548 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:47:22,548 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:47:22,572 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 11:47:22,576 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 11:47:22,577 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-26 11:47:22,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:22,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:22,580 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:22,585 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 11:47:22,585 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 11:47:22,585 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 11:47:22,586 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2023-11-26 11:47:22,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-26 11:47:22,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-11-26 11:47:22,596 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 11:47:22,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:22,649 WARN L260 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:47:22,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:22,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:47:22,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:22,715 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 11:47:22,751 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 11:47:22,758 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:22,889 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 56 states and 88 transitions. Complement of second has 12 states. [2023-11-26 11:47:22,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2023-11-26 11:47:22,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:22,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 53 transitions. [2023-11-26 11:47:22,900 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 53 transitions. Stem has 2 letters. Loop has 4 letters. [2023-11-26 11:47:22,901 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:47:22,901 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 53 transitions. Stem has 6 letters. Loop has 4 letters. [2023-11-26 11:47:22,902 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:47:22,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 53 transitions. Stem has 2 letters. Loop has 8 letters. [2023-11-26 11:47:22,902 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:47:22,903 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 88 transitions. [2023-11-26 11:47:22,908 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-26 11:47:22,914 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 35 states and 51 transitions. [2023-11-26 11:47:22,915 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-11-26 11:47:22,916 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2023-11-26 11:47:22,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 51 transitions. [2023-11-26 11:47:22,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:47:22,917 INFO L218 hiAutomatonCegarLoop]: Abstraction has 35 states and 51 transitions. [2023-11-26 11:47:22,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 51 transitions. [2023-11-26 11:47:22,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 21. [2023-11-26 11:47:22,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:22,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2023-11-26 11:47:22,950 INFO L240 hiAutomatonCegarLoop]: Abstraction has 21 states and 30 transitions. [2023-11-26 11:47:22,950 INFO L428 stractBuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2023-11-26 11:47:22,950 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-26 11:47:22,951 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 30 transitions. [2023-11-26 11:47:22,952 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-26 11:47:22,952 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:47:22,952 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:47:22,953 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-26 11:47:22,953 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-26 11:47:22,953 INFO L748 eck$LassoCheckResult]: Stem: 139#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 140#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~post2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 144#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 128#L18 [2023-11-26 11:47:22,954 INFO L750 eck$LassoCheckResult]: Loop: 128#L18 assume main_~a~0#1 > 0; 130#L19 assume 0 == main_~x~0#1 || 0 == main_~a~0#1;main_#t~nondet3#1 := 0; 125#L19-4 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 134#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 128#L18 [2023-11-26 11:47:22,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:22,955 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-11-26 11:47:22,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:22,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64847408] [2023-11-26 11:47:22,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:22,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:22,961 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:47:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:22,965 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:47:22,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:22,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1357749, now seen corresponding path program 1 times [2023-11-26 11:47:22,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:22,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927475882] [2023-11-26 11:47:22,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:22,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:23,078 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 11:47:23,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:23,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927475882] [2023-11-26 11:47:23,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927475882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:23,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:23,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:47:23,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703175298] [2023-11-26 11:47:23,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:23,087 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-26 11:47:23,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:23,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:47:23,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:47:23,093 INFO L87 Difference]: Start difference. First operand 21 states and 30 transitions. cyclomatic complexity: 11 Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 11:47:23,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:23,136 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2023-11-26 11:47:23,136 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 32 transitions. [2023-11-26 11:47:23,141 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-26 11:47:23,147 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 21 states and 28 transitions. [2023-11-26 11:47:23,147 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2023-11-26 11:47:23,147 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2023-11-26 11:47:23,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2023-11-26 11:47:23,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:47:23,148 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 28 transitions. [2023-11-26 11:47:23,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2023-11-26 11:47:23,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-26 11:47:23,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 20 states have internal predecessors, (28), 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 11:47:23,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2023-11-26 11:47:23,157 INFO L240 hiAutomatonCegarLoop]: Abstraction has 21 states and 28 transitions. [2023-11-26 11:47:23,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:47:23,159 INFO L428 stractBuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2023-11-26 11:47:23,160 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-26 11:47:23,160 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 28 transitions. [2023-11-26 11:47:23,163 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-26 11:47:23,165 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:47:23,166 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:47:23,166 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-26 11:47:23,166 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-26 11:47:23,167 INFO L748 eck$LassoCheckResult]: Stem: 192#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 193#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~post2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 197#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 181#L18 [2023-11-26 11:47:23,167 INFO L750 eck$LassoCheckResult]: Loop: 181#L18 assume !(main_~a~0#1 > 0); 182#L21 assume !(0 == main_~x~0#1 || 0 == main_~x~0#1 - 1); 189#L21-2 assume !(main_~x~0#1 == main_~x~0#1 - 1);assume (main_~x~0#1 < 0 && main_~x~0#1 - 1 >= 0) || main_#t~nondet4#1 <= main_~x~0#1;assume (main_~x~0#1 >= 0 && main_~x~0#1 - 1 < 0) || main_#t~nondet4#1 <= main_~x~0#1 - 1;assume (main_~x~0#1 < 0 && main_~x~0#1 - 1 < 0) || main_#t~nondet4#1 >= 0;assume (main_~x~0#1 >= 0 && main_~x~0#1 - 1 >= 0) || main_#t~nondet4#1 > main_~x~0#1 + (main_~x~0#1 - 1);assume main_#t~nondet4#1 >= -2147483648; 194#L21-4 main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 187#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 181#L18 [2023-11-26 11:47:23,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:23,168 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 2 times [2023-11-26 11:47:23,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:23,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564757156] [2023-11-26 11:47:23,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:23,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:23,181 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:47:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:23,193 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:47:23,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:23,195 INFO L85 PathProgramCache]: Analyzing trace with hash 55508611, now seen corresponding path program 1 times [2023-11-26 11:47:23,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:23,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483069212] [2023-11-26 11:47:23,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:23,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:23,218 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:47:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:23,242 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:47:23,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:23,243 INFO L85 PathProgramCache]: Analyzing trace with hash 309353020, now seen corresponding path program 1 times [2023-11-26 11:47:23,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:23,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286905502] [2023-11-26 11:47:23,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:23,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:23,261 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:47:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:23,275 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:47:23,365 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:47:23,365 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:47:23,365 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:47:23,365 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:47:23,365 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 11:47:23,365 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:23,366 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:47:23,366 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:47:23,366 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-06.c_Iteration3_Loop [2023-11-26 11:47:23,366 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:47:23,366 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:47:23,367 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 11:47:23,378 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 11:47:23,386 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 11:47:23,430 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:47:23,430 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 11:47:23,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:23,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:23,432 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:23,441 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:47:23,441 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:47:23,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-26 11:47:23,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:23,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:23,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:23,489 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:23,498 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 11:47:23,499 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:47:23,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-26 11:47:23,625 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 11:47:23,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:23,633 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:47:23,633 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:47:23,633 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:47:23,633 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:47:23,633 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 11:47:23,633 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:23,633 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:47:23,634 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:47:23,634 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-06.c_Iteration3_Loop [2023-11-26 11:47:23,634 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:47:23,634 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:47:23,635 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 11:47:23,647 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 11:47:23,650 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 11:47:23,702 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:47:23,703 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 11:47:23,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:23,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:23,704 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:23,718 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 11:47:23,730 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:47:23,731 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:47:23,731 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:47:23,731 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:47:23,731 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:47:23,733 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:47:23,733 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:47:23,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-26 11:47:23,743 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 11:47:23,746 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-26 11:47:23,746 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-26 11:47:23,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:23,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:23,752 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:23,761 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 11:47:23,761 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 11:47:23,762 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 11:47:23,762 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2023-11-26 11:47:23,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-26 11:47:23,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:23,769 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 11:47:23,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:23,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:47:23,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:23,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:47:23,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:23,953 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 11:47:23,954 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 11:47:23,954 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 9 Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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 11:47:24,029 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 9. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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 56 states and 74 transitions. Complement of second has 9 states. [2023-11-26 11:47:24,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-26 11:47:24,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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 11:47:24,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2023-11-26 11:47:24,031 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 3 letters. Loop has 5 letters. [2023-11-26 11:47:24,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:47:24,032 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 8 letters. Loop has 5 letters. [2023-11-26 11:47:24,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:47:24,032 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 3 letters. Loop has 10 letters. [2023-11-26 11:47:24,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:47:24,033 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 74 transitions. [2023-11-26 11:47:24,035 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-26 11:47:24,036 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 40 states and 54 transitions. [2023-11-26 11:47:24,036 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2023-11-26 11:47:24,036 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2023-11-26 11:47:24,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 54 transitions. [2023-11-26 11:47:24,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:47:24,036 INFO L218 hiAutomatonCegarLoop]: Abstraction has 40 states and 54 transitions. [2023-11-26 11:47:24,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 54 transitions. [2023-11-26 11:47:24,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2023-11-26 11:47:24,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 33 states have internal predecessors, (46), 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 11:47:24,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions. [2023-11-26 11:47:24,040 INFO L240 hiAutomatonCegarLoop]: Abstraction has 34 states and 46 transitions. [2023-11-26 11:47:24,040 INFO L428 stractBuchiCegarLoop]: Abstraction has 34 states and 46 transitions. [2023-11-26 11:47:24,041 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-26 11:47:24,041 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 46 transitions. [2023-11-26 11:47:24,042 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-26 11:47:24,042 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:47:24,042 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:47:24,042 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-26 11:47:24,042 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-26 11:47:24,043 INFO L748 eck$LassoCheckResult]: Stem: 320#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 321#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~post2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 314#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 310#L18 assume main_~a~0#1 > 0; 312#L19 [2023-11-26 11:47:24,043 INFO L750 eck$LassoCheckResult]: Loop: 312#L19 assume !(0 == main_~x~0#1 || 0 == main_~a~0#1); 306#L19-2 assume main_~x~0#1 == main_~a~0#1;main_#t~nondet3#1 := main_~x~0#1; 307#L19-4 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 324#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 329#L18 assume main_~a~0#1 > 0; 312#L19 [2023-11-26 11:47:24,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:24,043 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-11-26 11:47:24,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:24,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522740512] [2023-11-26 11:47:24,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:24,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:24,048 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:47:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:24,051 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:47:24,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:24,052 INFO L85 PathProgramCache]: Analyzing trace with hash 46856793, now seen corresponding path program 1 times [2023-11-26 11:47:24,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:24,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263979795] [2023-11-26 11:47:24,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:24,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:24,058 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:47:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:24,063 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:47:24,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:24,064 INFO L85 PathProgramCache]: Analyzing trace with hash 585781524, now seen corresponding path program 1 times [2023-11-26 11:47:24,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:24,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278035600] [2023-11-26 11:47:24,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:24,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:24,070 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:47:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:24,076 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:47:24,123 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:47:24,123 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:47:24,123 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:47:24,123 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:47:24,123 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 11:47:24,123 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:24,124 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:47:24,124 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:47:24,124 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-06.c_Iteration4_Loop [2023-11-26 11:47:24,124 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:47:24,124 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:47:24,126 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 11:47:24,129 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 11:47:24,141 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 11:47:24,178 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:47:24,178 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 11:47:24,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:24,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:24,180 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:24,189 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:47:24,189 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:47:24,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-26 11:47:24,212 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:47:24,212 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post2#1=0} Honda state: {ULTIMATE.start_main_#t~post2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:47:24,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:24,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:24,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:24,226 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:24,230 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:47:24,230 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:47:24,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-26 11:47:24,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:24,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:24,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:24,263 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:24,275 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 11:47:24,275 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:47:24,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-26 11:47:24,425 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 11:47:24,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:24,429 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:47:24,430 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:47:24,430 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:47:24,430 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:47:24,430 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 11:47:24,430 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:24,430 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:47:24,430 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:47:24,430 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-06.c_Iteration4_Loop [2023-11-26 11:47:24,430 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:47:24,430 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:47:24,431 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 11:47:24,436 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 11:47:24,467 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 11:47:24,529 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:47:24,529 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 11:47:24,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:24,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:24,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:24,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:24,545 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:24,577 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 11:47:24,590 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:47:24,590 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:47:24,590 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:47:24,590 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:47:24,590 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:47:24,591 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:47:24,591 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:47:24,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-26 11:47:24,601 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:47:24,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:24,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:24,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:24,646 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:24,650 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 11:47:24,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-26 11:47:24,663 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:47:24,663 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:47:24,663 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:47:24,663 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:47:24,664 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:47:24,666 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:47:24,666 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:47:24,685 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 11:47:24,691 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-11-26 11:47:24,691 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2023-11-26 11:47:24,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:24,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:24,693 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:24,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-26 11:47:24,701 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 11:47:24,701 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 11:47:24,701 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 11:47:24,701 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~a~0#1) = 1*ULTIMATE.start_main_~a~0#1 Supporting invariants [] [2023-11-26 11:47:24,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2023-11-26 11:47:24,709 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 11:47:24,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:47:24,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:47:24,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:24,777 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 11:47:24,778 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-26 11:47:24,779 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 46 transitions. cyclomatic complexity: 16 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:24,822 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 46 transitions. cyclomatic complexity: 16. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 56 states and 76 transitions. Complement of second has 6 states. [2023-11-26 11:47:24,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-26 11:47:24,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:24,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2023-11-26 11:47:24,825 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 4 letters. Loop has 5 letters. [2023-11-26 11:47:24,825 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:47:24,826 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 9 letters. Loop has 5 letters. [2023-11-26 11:47:24,826 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:47:24,826 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 4 letters. Loop has 10 letters. [2023-11-26 11:47:24,826 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:47:24,827 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 76 transitions. [2023-11-26 11:47:24,833 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-26 11:47:24,834 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 56 states and 76 transitions. [2023-11-26 11:47:24,834 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2023-11-26 11:47:24,836 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2023-11-26 11:47:24,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 76 transitions. [2023-11-26 11:47:24,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:47:24,837 INFO L218 hiAutomatonCegarLoop]: Abstraction has 56 states and 76 transitions. [2023-11-26 11:47:24,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 76 transitions. [2023-11-26 11:47:24,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2023-11-26 11:47:24,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 52 states have (on average 1.3846153846153846) internal successors, (72), 51 states have internal predecessors, (72), 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 11:47:24,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 72 transitions. [2023-11-26 11:47:24,847 INFO L240 hiAutomatonCegarLoop]: Abstraction has 52 states and 72 transitions. [2023-11-26 11:47:24,847 INFO L428 stractBuchiCegarLoop]: Abstraction has 52 states and 72 transitions. [2023-11-26 11:47:24,848 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-26 11:47:24,848 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states and 72 transitions. [2023-11-26 11:47:24,848 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-26 11:47:24,849 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:47:24,849 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:47:24,849 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:24,849 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-26 11:47:24,850 INFO L748 eck$LassoCheckResult]: Stem: 460#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 461#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~post2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 453#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 449#L18 assume main_~a~0#1 > 0; 451#L19 assume !(0 == main_~x~0#1 || 0 == main_~a~0#1); 445#L19-2 assume !(main_~x~0#1 == main_~a~0#1);assume (main_~x~0#1 < 0 && main_~a~0#1 >= 0) || main_#t~nondet3#1 <= main_~x~0#1;assume (main_~x~0#1 >= 0 && main_~a~0#1 < 0) || main_#t~nondet3#1 <= main_~a~0#1;assume (main_~x~0#1 < 0 && main_~a~0#1 < 0) || main_#t~nondet3#1 >= 0;assume (main_~x~0#1 >= 0 && main_~a~0#1 >= 0) || main_#t~nondet3#1 > main_~x~0#1 + main_~a~0#1;assume main_#t~nondet3#1 >= -2147483648; 446#L19-4 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 464#L18-2 [2023-11-26 11:47:24,850 INFO L750 eck$LassoCheckResult]: Loop: 464#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 476#L18 assume !(main_~a~0#1 > 0); 456#L21 assume !(0 == main_~x~0#1 || 0 == main_~x~0#1 - 1); 457#L21-2 assume !(main_~x~0#1 == main_~x~0#1 - 1);assume (main_~x~0#1 < 0 && main_~x~0#1 - 1 >= 0) || main_#t~nondet4#1 <= main_~x~0#1;assume (main_~x~0#1 >= 0 && main_~x~0#1 - 1 < 0) || main_#t~nondet4#1 <= main_~x~0#1 - 1;assume (main_~x~0#1 < 0 && main_~x~0#1 - 1 < 0) || main_#t~nondet4#1 >= 0;assume (main_~x~0#1 >= 0 && main_~x~0#1 - 1 >= 0) || main_#t~nondet4#1 > main_~x~0#1 + (main_~x~0#1 - 1);assume main_#t~nondet4#1 >= -2147483648; 462#L21-4 main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 464#L18-2 [2023-11-26 11:47:24,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:24,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1810663471, now seen corresponding path program 1 times [2023-11-26 11:47:24,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:24,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307648758] [2023-11-26 11:47:24,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:24,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:24,867 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:47:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:24,892 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:47:24,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:24,892 INFO L85 PathProgramCache]: Analyzing trace with hash 39654961, now seen corresponding path program 2 times [2023-11-26 11:47:24,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:24,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197301927] [2023-11-26 11:47:24,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:24,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:24,907 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:47:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:24,925 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:47:24,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:24,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1954252093, now seen corresponding path program 1 times [2023-11-26 11:47:24,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:24,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115318707] [2023-11-26 11:47:24,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:24,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:25,087 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 11:47:25,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:25,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115318707] [2023-11-26 11:47:25,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115318707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:25,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:25,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:47:25,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814177577] [2023-11-26 11:47:25,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:25,181 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:47:25,181 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:47:25,182 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:47:25,182 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:47:25,182 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 11:47:25,182 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:25,182 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:47:25,182 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:47:25,182 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-06.c_Iteration5_Loop [2023-11-26 11:47:25,182 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:47:25,183 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:47:25,184 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 11:47:25,194 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 11:47:25,196 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 11:47:25,251 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:47:25,251 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 11:47:25,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:25,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:25,257 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:25,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-26 11:47:25,269 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:47:25,270 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:47:25,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:25,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:25,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:25,323 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:25,332 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 11:47:25,333 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:47:25,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-26 11:47:25,396 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 11:47:25,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:25,406 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:47:25,406 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:47:25,406 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:47:25,406 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:47:25,406 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 11:47:25,406 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:25,406 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:47:25,406 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:47:25,407 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-06.c_Iteration5_Loop [2023-11-26 11:47:25,407 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:47:25,407 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:47:25,408 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 11:47:25,412 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 11:47:25,422 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 11:47:25,476 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:47:25,476 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 11:47:25,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:25,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:25,477 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:25,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-26 11:47:25,482 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 11:47:25,495 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:47:25,495 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:47:25,495 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:47:25,495 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:47:25,495 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:47:25,498 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:47:25,498 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:47:25,515 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:47:25,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:25,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:25,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:25,525 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:25,529 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 11:47:25,542 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:47:25,542 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:47:25,542 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:47:25,542 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:47:25,542 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:47:25,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-26 11:47:25,544 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:47:25,544 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:47:25,560 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 11:47:25,564 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 11:47:25,564 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-26 11:47:25,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:25,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:25,565 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:25,569 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 11:47:25,569 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 11:47:25,569 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 11:47:25,569 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2023-11-26 11:47:25,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-26 11:47:25,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:25,579 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 11:47:25,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:25,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:47:25,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:25,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:47:25,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:25,681 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 11:47:25,682 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 11:47:25,682 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 52 states and 72 transitions. cyclomatic complexity: 26 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 11:47:25,766 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 52 states and 72 transitions. cyclomatic complexity: 26. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 138 states and 191 transitions. Complement of second has 7 states. [2023-11-26 11:47:25,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-26 11:47:25,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 11:47:25,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2023-11-26 11:47:25,772 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 7 letters. Loop has 5 letters. [2023-11-26 11:47:25,772 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:47:25,772 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 12 letters. Loop has 5 letters. [2023-11-26 11:47:25,774 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:47:25,774 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 7 letters. Loop has 10 letters. [2023-11-26 11:47:25,775 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:47:25,775 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 191 transitions. [2023-11-26 11:47:25,781 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-26 11:47:25,784 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 89 states and 123 transitions. [2023-11-26 11:47:25,784 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-11-26 11:47:25,784 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2023-11-26 11:47:25,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 123 transitions. [2023-11-26 11:47:25,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:47:25,785 INFO L218 hiAutomatonCegarLoop]: Abstraction has 89 states and 123 transitions. [2023-11-26 11:47:25,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 123 transitions. [2023-11-26 11:47:25,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 73. [2023-11-26 11:47:25,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 73 states have (on average 1.36986301369863) internal successors, (100), 72 states have internal predecessors, (100), 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 11:47:25,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 100 transitions. [2023-11-26 11:47:25,801 INFO L240 hiAutomatonCegarLoop]: Abstraction has 73 states and 100 transitions. [2023-11-26 11:47:25,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:25,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:47:25,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:47:25,802 INFO L87 Difference]: Start difference. First operand 73 states and 100 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 11:47:25,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:25,936 INFO L93 Difference]: Finished difference Result 112 states and 146 transitions. [2023-11-26 11:47:25,936 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 112 states and 146 transitions. [2023-11-26 11:47:25,940 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-26 11:47:25,942 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 112 states to 66 states and 84 transitions. [2023-11-26 11:47:25,942 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-11-26 11:47:25,942 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-11-26 11:47:25,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 84 transitions. [2023-11-26 11:47:25,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:47:25,942 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 84 transitions. [2023-11-26 11:47:25,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 84 transitions. [2023-11-26 11:47:25,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 48. [2023-11-26 11:47:25,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 47 states have internal predecessors, (62), 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 11:47:25,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2023-11-26 11:47:25,946 INFO L240 hiAutomatonCegarLoop]: Abstraction has 48 states and 62 transitions. [2023-11-26 11:47:25,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:47:25,947 INFO L428 stractBuchiCegarLoop]: Abstraction has 48 states and 62 transitions. [2023-11-26 11:47:25,948 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-26 11:47:25,948 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 62 transitions. [2023-11-26 11:47:25,948 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-26 11:47:25,948 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:47:25,949 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:47:25,949 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-26 11:47:25,949 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-26 11:47:25,950 INFO L748 eck$LassoCheckResult]: Stem: 909#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 910#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~post2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 902#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 903#L18 assume main_~a~0#1 > 0; 915#L19 assume !(0 == main_~x~0#1 || 0 == main_~a~0#1); 916#L19-2 assume !(main_~x~0#1 == main_~a~0#1);assume (main_~x~0#1 < 0 && main_~a~0#1 >= 0) || main_#t~nondet3#1 <= main_~x~0#1;assume (main_~x~0#1 >= 0 && main_~a~0#1 < 0) || main_#t~nondet3#1 <= main_~a~0#1;assume (main_~x~0#1 < 0 && main_~a~0#1 < 0) || main_#t~nondet3#1 >= 0;assume (main_~x~0#1 >= 0 && main_~a~0#1 >= 0) || main_#t~nondet3#1 > main_~x~0#1 + main_~a~0#1;assume main_#t~nondet3#1 >= -2147483648; 938#L19-4 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 937#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 931#L18 assume main_~a~0#1 > 0; 930#L19 assume !(0 == main_~x~0#1 || 0 == main_~a~0#1); 929#L19-2 assume !(main_~x~0#1 == main_~a~0#1);assume (main_~x~0#1 < 0 && main_~a~0#1 >= 0) || main_#t~nondet3#1 <= main_~x~0#1;assume (main_~x~0#1 >= 0 && main_~a~0#1 < 0) || main_#t~nondet3#1 <= main_~a~0#1;assume (main_~x~0#1 < 0 && main_~a~0#1 < 0) || main_#t~nondet3#1 >= 0;assume (main_~x~0#1 >= 0 && main_~a~0#1 >= 0) || main_#t~nondet3#1 > main_~x~0#1 + main_~a~0#1;assume main_#t~nondet3#1 >= -2147483648; 927#L19-4 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 923#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 924#L18 assume !(main_~a~0#1 > 0); 921#L21 assume 0 == main_~x~0#1 || 0 == main_~x~0#1 - 1;main_#t~nondet4#1 := 0; 920#L21-4 main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 918#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 898#L18 [2023-11-26 11:47:25,950 INFO L750 eck$LassoCheckResult]: Loop: 898#L18 assume !(main_~a~0#1 > 0); 899#L21 assume !(0 == main_~x~0#1 || 0 == main_~x~0#1 - 1); 906#L21-2 assume !(main_~x~0#1 == main_~x~0#1 - 1);assume (main_~x~0#1 < 0 && main_~x~0#1 - 1 >= 0) || main_#t~nondet4#1 <= main_~x~0#1;assume (main_~x~0#1 >= 0 && main_~x~0#1 - 1 < 0) || main_#t~nondet4#1 <= main_~x~0#1 - 1;assume (main_~x~0#1 < 0 && main_~x~0#1 - 1 < 0) || main_#t~nondet4#1 >= 0;assume (main_~x~0#1 >= 0 && main_~x~0#1 - 1 >= 0) || main_#t~nondet4#1 > main_~x~0#1 + (main_~x~0#1 - 1);assume main_#t~nondet4#1 >= -2147483648; 911#L21-4 main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 913#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 898#L18 [2023-11-26 11:47:25,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:25,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1122541362, now seen corresponding path program 1 times [2023-11-26 11:47:25,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:25,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592476093] [2023-11-26 11:47:25,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:25,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:25,994 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 11:47:25,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:25,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592476093] [2023-11-26 11:47:25,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592476093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:25,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:25,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:47:25,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005177982] [2023-11-26 11:47:25,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:25,996 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-26 11:47:25,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:25,996 INFO L85 PathProgramCache]: Analyzing trace with hash 55508611, now seen corresponding path program 3 times [2023-11-26 11:47:25,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:25,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828899892] [2023-11-26 11:47:25,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:25,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:26,004 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:47:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:26,014 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:47:26,084 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:47:26,084 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:47:26,084 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:47:26,084 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:47:26,084 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 11:47:26,084 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:26,084 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:47:26,085 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:47:26,085 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-06.c_Iteration6_Loop [2023-11-26 11:47:26,085 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:47:26,085 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:47:26,086 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:47:26,097 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 11:47:26,100 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 11:47:26,141 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:47:26,141 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 11:47:26,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:26,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:26,148 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:26,157 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:47:26,158 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:47:26,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-26 11:47:26,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:26,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:26,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:26,186 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:26,193 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 11:47:26,193 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:47:26,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-26 11:47:26,228 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:47:26,228 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~a~0#1=0} Honda state: {ULTIMATE.start_main_~a~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~a~0#1=0}, {ULTIMATE.start_main_~a~0#1=0}, {ULTIMATE.start_main_~a~0#1=-1}] Lambdas: [12, 4, 1] Nus: [0, 0] [2023-11-26 11:47:26,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:26,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:26,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:26,235 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:26,241 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:47:26,241 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:47:26,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-26 11:47:26,268 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:47:26,269 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post2#1=0} Honda state: {ULTIMATE.start_main_#t~post2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:47:26,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:26,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:26,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:26,275 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:26,281 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:47:26,281 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:47:26,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-26 11:47:26,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:26,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:26,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:26,320 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:26,325 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 11:47:26,325 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:47:26,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-26 11:47:26,444 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 11:47:26,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:26,450 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:47:26,450 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:47:26,450 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:47:26,450 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:47:26,450 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 11:47:26,450 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:26,451 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:47:26,451 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:47:26,451 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-06.c_Iteration6_Loop [2023-11-26 11:47:26,451 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:47:26,451 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:47:26,452 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 11:47:26,458 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 11:47:26,460 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 11:47:26,506 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:47:26,508 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 11:47:26,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:26,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:26,510 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:26,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-26 11:47:26,517 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 11:47:26,529 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:47:26,529 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:47:26,529 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:47:26,530 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:47:26,530 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:47:26,531 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:47:26,531 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:47:26,540 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:47:26,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:26,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:26,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:26,551 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:26,556 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 11:47:26,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:47:26,569 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:47:26,569 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:47:26,569 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:47:26,569 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:47:26,570 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:47:26,570 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:47:26,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-26 11:47:26,588 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:47:26,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:26,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:26,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:26,598 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:26,602 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 11:47:26,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-26 11:47:26,615 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:47:26,615 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:47:26,615 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:47:26,616 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:47:26,616 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:47:26,617 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:47:26,617 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:47:26,637 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 11:47:26,642 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 11:47:26,642 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-26 11:47:26,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:47:26,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:26,646 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:26,648 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 11:47:26,648 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 11:47:26,648 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 11:47:26,648 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2023-11-26 11:47:26,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-26 11:47:26,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:26,655 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 11:47:26,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:26,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:47:26,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:26,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:47:26,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:26,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:26,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:26,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:26,811 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 11:47:26,812 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 11:47:26,812 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 62 transitions. cyclomatic complexity: 19 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:26,876 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 62 transitions. cyclomatic complexity: 19. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 55 states and 71 transitions. Complement of second has 9 states. [2023-11-26 11:47:26,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-26 11:47:26,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:26,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2023-11-26 11:47:26,878 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 17 letters. Loop has 5 letters. [2023-11-26 11:47:26,878 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:47:26,878 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-26 11:47:26,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:26,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:47:26,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:26,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:47:26,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:27,004 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 11:47:27,004 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-26 11:47:27,005 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 62 transitions. cyclomatic complexity: 19 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:27,067 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 62 transitions. cyclomatic complexity: 19. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 55 states and 71 transitions. Complement of second has 9 states. [2023-11-26 11:47:27,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-26 11:47:27,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:27,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2023-11-26 11:47:27,069 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 17 letters. Loop has 5 letters. [2023-11-26 11:47:27,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:47:27,069 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-26 11:47:27,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:47:27,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:47:27,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:27,195 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 11:47:27,196 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-26 11:47:27,196 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 62 transitions. cyclomatic complexity: 19 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:27,258 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 62 transitions. cyclomatic complexity: 19. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 82 states and 108 transitions. Complement of second has 8 states. [2023-11-26 11:47:27,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-26 11:47:27,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:27,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2023-11-26 11:47:27,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 17 letters. Loop has 5 letters. [2023-11-26 11:47:27,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:47:27,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 22 letters. Loop has 5 letters. [2023-11-26 11:47:27,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:47:27,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 17 letters. Loop has 10 letters. [2023-11-26 11:47:27,262 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:47:27,262 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 82 states and 108 transitions. [2023-11-26 11:47:27,264 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-26 11:47:27,264 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 82 states to 0 states and 0 transitions. [2023-11-26 11:47:27,264 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-26 11:47:27,264 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-26 11:47:27,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-26 11:47:27,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:27,265 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 11:47:27,265 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 11:47:27,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:27,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:47:27,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:47:27,266 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:27,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:27,266 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-26 11:47:27,266 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-26 11:47:27,266 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-26 11:47:27,266 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-26 11:47:27,267 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-26 11:47:27,267 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-26 11:47:27,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-26 11:47:27,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:27,267 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 11:47:27,267 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 11:47:27,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:47:27,268 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 11:47:27,268 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-26 11:47:27,268 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-26 11:47:27,268 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-26 11:47:27,269 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-26 11:47:27,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.11 11:47:27 BoogieIcfgContainer [2023-11-26 11:47:27,276 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-26 11:47:27,277 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:47:27,277 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:47:27,277 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:47:27,278 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:21" (3/4) ... [2023-11-26 11:47:27,280 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 11:47:27,281 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:47:27,282 INFO L158 Benchmark]: Toolchain (without parser) took 6604.62ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 118.9MB in the beginning and 113.5MB in the end (delta: 5.4MB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. [2023-11-26 11:47:27,282 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 121.6MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:47:27,283 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.48ms. Allocated memory is still 148.9MB. Free memory was 118.9MB in the beginning and 109.1MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 11:47:27,283 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.61ms. Allocated memory is still 148.9MB. Free memory was 109.1MB in the beginning and 107.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:47:27,284 INFO L158 Benchmark]: Boogie Preprocessor took 48.91ms. Allocated memory is still 148.9MB. Free memory was 107.7MB in the beginning and 106.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:47:27,284 INFO L158 Benchmark]: RCFGBuilder took 315.45ms. Allocated memory is still 148.9MB. Free memory was 106.4MB in the beginning and 96.9MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 11:47:27,285 INFO L158 Benchmark]: BuchiAutomizer took 5914.17ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 96.6MB in the beginning and 113.5MB in the end (delta: -16.9MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2023-11-26 11:47:27,285 INFO L158 Benchmark]: Witness Printer took 4.21ms. Allocated memory is still 180.4MB. Free memory is still 113.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:47:27,287 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 121.6MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.48ms. Allocated memory is still 148.9MB. Free memory was 118.9MB in the beginning and 109.1MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.61ms. Allocated memory is still 148.9MB. Free memory was 109.1MB in the beginning and 107.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.91ms. Allocated memory is still 148.9MB. Free memory was 107.7MB in the beginning and 106.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 315.45ms. Allocated memory is still 148.9MB. Free memory was 106.4MB in the beginning and 96.9MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 5914.17ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 96.6MB in the beginning and 113.5MB in the end (delta: -16.9MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * Witness Printer took 4.21ms. Allocated memory is still 180.4MB. Free memory is still 113.5MB. 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 8 terminating modules (3 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 7 locations. One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function a and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One nondeterministic module has affine ranking function x and consists of 5 locations. 3 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.8s and 7 iterations. TraceHistogramMax:4. Analysis of lassos took 3.9s. Construction of modules took 0.2s. Büchi inclusion checks took 1.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 6. Automata minimization 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 58 StatesRemovedByMinimization, 5 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 [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 146 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 139 mSDsluCounter, 170 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 74 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 259 IncrementalHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 96 mSDtfsCounter, 259 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT3 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax100 hnf100 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq151 hnf93 smp95 dnf100 smp100 tf111 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 44ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.2s 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 11:47:27,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cb23b0-f8ea-4772-b0cb-b0cb0e1a0a4d/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