./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-lit/hh2012-ex3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 527bcce2 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_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-lit/hh2012-ex3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3c7177334f88b94ca4ee99044935e396702561856a6f48616f98f91aafc609bb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 20:57:45,474 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 20:57:45,553 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-21 20:57:45,558 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 20:57:45,559 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 20:57:45,587 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 20:57:45,588 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 20:57:45,589 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 20:57:45,589 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 20:57:45,590 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 20:57:45,591 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 20:57:45,591 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 20:57:45,592 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 20:57:45,593 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-21 20:57:45,593 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-21 20:57:45,594 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-21 20:57:45,594 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-21 20:57:45,595 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-21 20:57:45,595 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-21 20:57:45,596 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 20:57:45,596 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-21 20:57:45,597 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 20:57:45,597 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 20:57:45,598 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 20:57:45,598 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 20:57:45,599 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-21 20:57:45,599 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-21 20:57:45,599 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-21 20:57:45,600 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 20:57:45,600 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 20:57:45,601 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 20:57:45,601 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-21 20:57:45,601 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 20:57:45,602 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 20:57:45,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 20:57:45,602 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 20:57:45,603 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 20:57:45,604 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-21 20:57:45,604 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_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c7177334f88b94ca4ee99044935e396702561856a6f48616f98f91aafc609bb [2023-11-21 20:57:45,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 20:57:45,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 20:57:45,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 20:57:45,896 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 20:57:45,898 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 20:57:45,900 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/loop-lit/hh2012-ex3.i [2023-11-21 20:57:49,091 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 20:57:49,325 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 20:57:49,326 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/sv-benchmarks/c/loop-lit/hh2012-ex3.i [2023-11-21 20:57:49,334 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/data/938b576e9/d7eadf06e02e4de885cece6a33dfac0b/FLAGefec171bb [2023-11-21 20:57:49,350 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/data/938b576e9/d7eadf06e02e4de885cece6a33dfac0b [2023-11-21 20:57:49,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 20:57:49,355 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 20:57:49,356 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 20:57:49,356 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 20:57:49,370 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 20:57:49,371 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:57:49" (1/1) ... [2023-11-21 20:57:49,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3916c0f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:49, skipping insertion in model container [2023-11-21 20:57:49,375 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:57:49" (1/1) ... [2023-11-21 20:57:49,403 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:57:49,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:57:49,656 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 20:57:49,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:57:49,701 INFO L206 MainTranslator]: Completed translation [2023-11-21 20:57:49,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:49 WrapperNode [2023-11-21 20:57:49,702 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 20:57:49,705 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 20:57:49,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 20:57:49,705 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 20:57:49,713 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:49" (1/1) ... [2023-11-21 20:57:49,722 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:49" (1/1) ... [2023-11-21 20:57:49,754 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 11, calls inlined = 18, statements flattened = 100 [2023-11-21 20:57:49,755 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 20:57:49,756 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 20:57:49,756 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 20:57:49,756 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 20:57:49,768 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:49" (1/1) ... [2023-11-21 20:57:49,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:49" (1/1) ... [2023-11-21 20:57:49,781 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:49" (1/1) ... [2023-11-21 20:57:49,798 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 20:57:49,800 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:49" (1/1) ... [2023-11-21 20:57:49,800 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:49" (1/1) ... [2023-11-21 20:57:49,811 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:49" (1/1) ... [2023-11-21 20:57:49,820 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:49" (1/1) ... [2023-11-21 20:57:49,821 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:49" (1/1) ... [2023-11-21 20:57:49,822 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:49" (1/1) ... [2023-11-21 20:57:49,826 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 20:57:49,832 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 20:57:49,832 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 20:57:49,832 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 20:57:49,833 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:49" (1/1) ... [2023-11-21 20:57:49,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:49,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:49,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:49,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-21 20:57:49,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 20:57:49,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 20:57:49,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 20:57:49,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 20:57:49,972 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 20:57:49,974 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 20:57:50,152 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 20:57:50,163 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 20:57:50,163 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 20:57:50,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:57:50 BoogieIcfgContainer [2023-11-21 20:57:50,165 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 20:57:50,167 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-21 20:57:50,167 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-21 20:57:50,171 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-21 20:57:50,172 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 20:57:50,173 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 08:57:49" (1/3) ... [2023-11-21 20:57:50,174 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a55a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 08:57:50, skipping insertion in model container [2023-11-21 20:57:50,174 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 20:57:50,174 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:49" (2/3) ... [2023-11-21 20:57:50,175 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a55a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 08:57:50, skipping insertion in model container [2023-11-21 20:57:50,175 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 20:57:50,175 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:57:50" (3/3) ... [2023-11-21 20:57:50,177 INFO L332 chiAutomizerObserver]: Analyzing ICFG hh2012-ex3.i [2023-11-21 20:57:50,236 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-21 20:57:50,236 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-21 20:57:50,236 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-21 20:57:50,236 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-21 20:57:50,237 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-21 20:57:50,237 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-21 20:57:50,237 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-21 20:57:50,237 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-21 20:57:50,241 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 49 states, 48 states have (on average 1.4166666666666667) internal successors, (68), 48 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:50,260 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2023-11-21 20:57:50,260 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 20:57:50,261 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 20:57:50,266 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 20:57:50,266 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:57:50,266 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-21 20:57:50,267 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 49 states, 48 states have (on average 1.4166666666666667) internal successors, (68), 48 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:50,272 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2023-11-21 20:57:50,272 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 20:57:50,272 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 20:57:50,273 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 20:57:50,273 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:57:50,280 INFO L748 eck$LassoCheckResult]: Stem: 17#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 24#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_#t~post2#1, main_~j~0#1, main_~i~0#1;main_~i~0#1 := 0; 46#L16-2true [2023-11-21 20:57:50,281 INFO L750 eck$LassoCheckResult]: Loop: 46#L16-2true assume !!(main_~i~0#1 < 4);main_~j~0#1 := 0; 28#L18-2true assume !(main_~j~0#1 < 4); 30#L18-3true assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 <= main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 23#L13-16true assume !(0 == __VERIFIER_assert_~cond#1); 13#L13-19true havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 50#L13-20true assume !(0 == __VERIFIER_assert_~cond#1); 39#L13-23true havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~i~0#1 <= 3 + main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 34#L13-24true assume !(0 == __VERIFIER_assert_~cond#1); 18#L13-27true havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= 4 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 25#L13-28true assume !(0 == __VERIFIER_assert_~cond#1); 42#L13-31true havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;main_~i~0#1 := 1 + (main_~i~0#1 - main_~j~0#1);havoc main_~j~0#1; 46#L16-2true [2023-11-21 20:57:50,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:50,288 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-21 20:57:50,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:50,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800637045] [2023-11-21 20:57:50,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:50,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:57:50,384 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:57:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:57:50,411 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:57:50,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:50,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1135295544, now seen corresponding path program 1 times [2023-11-21 20:57:50,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:50,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372960151] [2023-11-21 20:57:50,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:50,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:50,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:57:50,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:57:50,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372960151] [2023-11-21 20:57:50,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372960151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:57:50,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:57:50,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 20:57:50,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972268952] [2023-11-21 20:57:50,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:57:50,531 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 20:57:50,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:57:50,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:57:50,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:57:50,569 INFO L87 Difference]: Start difference. First operand has 49 states, 48 states have (on average 1.4166666666666667) internal successors, (68), 48 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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) [2023-11-21 20:57:50,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:57:50,612 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2023-11-21 20:57:50,614 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 43 transitions. [2023-11-21 20:57:50,617 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2023-11-21 20:57:50,621 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 22 states and 23 transitions. [2023-11-21 20:57:50,622 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2023-11-21 20:57:50,623 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2023-11-21 20:57:50,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 23 transitions. [2023-11-21 20:57:50,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:57:50,624 INFO L218 hiAutomatonCegarLoop]: Abstraction has 22 states and 23 transitions. [2023-11-21 20:57:50,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 23 transitions. [2023-11-21 20:57:50,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-21 20:57:50,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:50,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2023-11-21 20:57:50,656 INFO L240 hiAutomatonCegarLoop]: Abstraction has 22 states and 23 transitions. [2023-11-21 20:57:50,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:57:50,661 INFO L428 stractBuchiCegarLoop]: Abstraction has 22 states and 23 transitions. [2023-11-21 20:57:50,661 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-21 20:57:50,661 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 23 transitions. [2023-11-21 20:57:50,663 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2023-11-21 20:57:50,663 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 20:57:50,663 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 20:57:50,664 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 20:57:50,664 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:57:50,664 INFO L748 eck$LassoCheckResult]: Stem: 118#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 107#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_#t~post2#1, main_~j~0#1, main_~i~0#1;main_~i~0#1 := 0; 108#L16-2 [2023-11-21 20:57:50,665 INFO L750 eck$LassoCheckResult]: Loop: 108#L16-2 assume !!(main_~i~0#1 < 4);main_~j~0#1 := 0; 115#L18-2 assume !!(main_~j~0#1 < 4);main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1;main_#t~post2#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 <= main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 114#L13 assume !(0 == __VERIFIER_assert_~cond#1); 105#L13-3 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 106#L13-4 assume !(0 == __VERIFIER_assert_~cond#1); 111#L13-7 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~i~0#1 <= 3 + main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 112#L13-8 assume !(0 == __VERIFIER_assert_~cond#1); 113#L13-11 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= 4 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 116#L13-12 assume !(0 == __VERIFIER_assert_~cond#1); 120#L13-15 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 121#L18-2 assume !(main_~j~0#1 < 4); 117#L18-3 assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 <= main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 102#L13-16 assume !(0 == __VERIFIER_assert_~cond#1); 100#L13-19 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 101#L13-20 assume !(0 == __VERIFIER_assert_~cond#1); 103#L13-23 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~i~0#1 <= 3 + main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 104#L13-24 assume !(0 == __VERIFIER_assert_~cond#1); 119#L13-27 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= 4 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 110#L13-28 assume !(0 == __VERIFIER_assert_~cond#1); 109#L13-31 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;main_~i~0#1 := 1 + (main_~i~0#1 - main_~j~0#1);havoc main_~j~0#1; 108#L16-2 [2023-11-21 20:57:50,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:50,666 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-11-21 20:57:50,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:50,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881605636] [2023-11-21 20:57:50,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:50,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:57:50,676 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:57:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:57:50,684 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:57:50,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:50,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1841154240, now seen corresponding path program 1 times [2023-11-21 20:57:50,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:50,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918915861] [2023-11-21 20:57:50,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:50,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:57:50,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:57:50,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918915861] [2023-11-21 20:57:50,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918915861] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:57:50,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406853274] [2023-11-21 20:57:50,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:50,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:57:50,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:50,844 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:57:50,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 20:57:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:50,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 20:57:50,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:57:50,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:57:50,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 20:57:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:57:51,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406853274] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 20:57:51,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 20:57:51,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-21 20:57:51,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978665347] [2023-11-21 20:57:51,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 20:57:51,024 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 20:57:51,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:57:51,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 20:57:51,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:57:51,026 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:51,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:57:51,123 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2023-11-21 20:57:51,123 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 50 transitions. [2023-11-21 20:57:51,125 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2023-11-21 20:57:51,127 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 49 states and 50 transitions. [2023-11-21 20:57:51,127 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2023-11-21 20:57:51,128 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2023-11-21 20:57:51,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 50 transitions. [2023-11-21 20:57:51,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:57:51,128 INFO L218 hiAutomatonCegarLoop]: Abstraction has 49 states and 50 transitions. [2023-11-21 20:57:51,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 50 transitions. [2023-11-21 20:57:51,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-11-21 20:57:51,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 48 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:51,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2023-11-21 20:57:51,134 INFO L240 hiAutomatonCegarLoop]: Abstraction has 49 states and 50 transitions. [2023-11-21 20:57:51,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 20:57:51,136 INFO L428 stractBuchiCegarLoop]: Abstraction has 49 states and 50 transitions. [2023-11-21 20:57:51,136 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-21 20:57:51,136 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 49 states and 50 transitions. [2023-11-21 20:57:51,138 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2023-11-21 20:57:51,138 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 20:57:51,138 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 20:57:51,139 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 20:57:51,139 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:57:51,140 INFO L748 eck$LassoCheckResult]: Stem: 312#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 301#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_#t~post2#1, main_~j~0#1, main_~i~0#1;main_~i~0#1 := 0; 302#L16-2 [2023-11-21 20:57:51,140 INFO L750 eck$LassoCheckResult]: Loop: 302#L16-2 assume !!(main_~i~0#1 < 4);main_~j~0#1 := 0; 313#L18-2 assume !!(main_~j~0#1 < 4);main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1;main_#t~post2#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 <= main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 342#L13 assume !(0 == __VERIFIER_assert_~cond#1); 341#L13-3 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 316#L13-4 assume !(0 == __VERIFIER_assert_~cond#1); 305#L13-7 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~i~0#1 <= 3 + main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 306#L13-8 assume !(0 == __VERIFIER_assert_~cond#1); 307#L13-11 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= 4 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 310#L13-12 assume !(0 == __VERIFIER_assert_~cond#1); 315#L13-15 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 309#L18-2 assume !!(main_~j~0#1 < 4);main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1;main_#t~post2#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 <= main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 308#L13 assume !(0 == __VERIFIER_assert_~cond#1); 299#L13-3 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 300#L13-4 assume !(0 == __VERIFIER_assert_~cond#1); 340#L13-7 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~i~0#1 <= 3 + main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 339#L13-8 assume !(0 == __VERIFIER_assert_~cond#1); 338#L13-11 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= 4 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 317#L13-12 assume !(0 == __VERIFIER_assert_~cond#1); 318#L13-15 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 337#L18-2 assume !!(main_~j~0#1 < 4);main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1;main_#t~post2#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 <= main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 336#L13 assume !(0 == __VERIFIER_assert_~cond#1); 335#L13-3 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 334#L13-4 assume !(0 == __VERIFIER_assert_~cond#1); 333#L13-7 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~i~0#1 <= 3 + main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 332#L13-8 assume !(0 == __VERIFIER_assert_~cond#1); 331#L13-11 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= 4 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 330#L13-12 assume !(0 == __VERIFIER_assert_~cond#1); 329#L13-15 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 328#L18-2 assume !!(main_~j~0#1 < 4);main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1;main_#t~post2#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 <= main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 320#L13 assume !(0 == __VERIFIER_assert_~cond#1); 327#L13-3 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 326#L13-4 assume !(0 == __VERIFIER_assert_~cond#1); 325#L13-7 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~i~0#1 <= 3 + main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 324#L13-8 assume !(0 == __VERIFIER_assert_~cond#1); 323#L13-11 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= 4 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 322#L13-12 assume !(0 == __VERIFIER_assert_~cond#1); 321#L13-15 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 319#L18-2 assume !(main_~j~0#1 < 4); 311#L18-3 assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 <= main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 296#L13-16 assume !(0 == __VERIFIER_assert_~cond#1); 294#L13-19 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 295#L13-20 assume !(0 == __VERIFIER_assert_~cond#1); 297#L13-23 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~i~0#1 <= 3 + main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 298#L13-24 assume !(0 == __VERIFIER_assert_~cond#1); 314#L13-27 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= 4 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 303#L13-28 assume !(0 == __VERIFIER_assert_~cond#1); 304#L13-31 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;main_~i~0#1 := 1 + (main_~i~0#1 - main_~j~0#1);havoc main_~j~0#1; 302#L16-2 [2023-11-21 20:57:51,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:51,141 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2023-11-21 20:57:51,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:51,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954186173] [2023-11-21 20:57:51,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:51,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:57:51,149 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:57:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:57:51,155 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:57:51,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:51,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1028574776, now seen corresponding path program 2 times [2023-11-21 20:57:51,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:51,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289371816] [2023-11-21 20:57:51,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:51,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:57:51,222 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:57:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:57:51,269 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:57:51,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:51,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1757615670, now seen corresponding path program 1 times [2023-11-21 20:57:51,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:51,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233584346] [2023-11-21 20:57:51,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:51,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:57:51,341 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:57:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:57:51,428 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:57:52,787 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 20:57:52,788 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 20:57:52,788 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 20:57:52,788 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 20:57:52,788 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-21 20:57:52,789 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:52,789 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 20:57:52,789 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 20:57:52,789 INFO L133 ssoRankerPreferences]: Filename of dumped script: hh2012-ex3.i_Iteration3_Loop [2023-11-21 20:57:52,789 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 20:57:52,790 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 20:57:52,807 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:52,815 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:52,819 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:52,821 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:52,824 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:52,826 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:52,877 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 20:57:52,878 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-21 20:57:52,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:52,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:52,925 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:52,937 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 20:57:52,937 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 20:57:52,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-21 20:57:52,970 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 20:57:52,970 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0#1=0} Honda state: {ULTIMATE.start_main_~j~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 20:57:53,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:53,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:53,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:53,028 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:53,041 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 20:57:53,041 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 20:57:53,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-21 20:57:53,076 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 20:57:53,076 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond#1=0} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 20:57:53,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:53,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:53,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:53,102 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:53,104 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 20:57:53,104 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 20:57:53,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-21 20:57:53,143 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 20:57:53,143 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_#in~cond#1=0} Honda state: {ULTIMATE.start___VERIFIER_assert_#in~cond#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 20:57:53,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:53,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:53,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:53,180 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:53,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-21 20:57:53,192 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 20:57:53,193 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 20:57:53,216 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 20:57:53,216 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: [] [2023-11-21 20:57:53,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:53,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:53,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:53,240 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:53,247 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 20:57:53,248 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 20:57:53,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-21 20:57:53,271 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 20:57:53,271 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post1#1=0} Honda state: {ULTIMATE.start_main_#t~post1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 20:57:53,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:53,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:53,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:53,296 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:53,303 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 20:57:53,303 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 20:57:53,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-21 20:57:53,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:53,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:53,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:53,350 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:53,360 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-21 20:57:53,360 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 20:57:53,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-21 20:57:53,418 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-21 20:57:53,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:53,428 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 20:57:53,428 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 20:57:53,428 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 20:57:53,428 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 20:57:53,428 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-21 20:57:53,429 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:53,429 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 20:57:53,429 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 20:57:53,429 INFO L133 ssoRankerPreferences]: Filename of dumped script: hh2012-ex3.i_Iteration3_Loop [2023-11-21 20:57:53,429 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 20:57:53,429 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 20:57:53,430 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:53,441 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:53,444 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:53,446 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:53,448 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:53,451 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:53,496 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 20:57:53,502 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-21 20:57:53,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:53,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:53,505 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:53,513 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-21 20:57:53,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-21 20:57:53,526 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 20:57:53,526 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 20:57:53,526 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 20:57:53,526 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 20:57:53,527 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 20:57:53,529 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 20:57:53,530 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 20:57:53,556 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 20:57:53,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:53,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:53,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:53,580 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:53,587 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-21 20:57:53,599 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 20:57:53,599 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 20:57:53,599 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 20:57:53,599 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 20:57:53,600 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 20:57:53,600 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 20:57:53,600 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 20:57:53,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-21 20:57:53,610 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 20:57:53,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:53,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:53,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:53,634 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:53,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-21 20:57:53,639 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-21 20:57:53,651 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 20:57:53,651 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 20:57:53,651 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 20:57:53,651 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 20:57:53,651 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 20:57:53,652 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 20:57:53,652 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 20:57:53,667 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 20:57:53,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:53,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:53,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:53,691 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:53,695 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-21 20:57:53,707 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 20:57:53,707 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 20:57:53,707 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 20:57:53,707 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 20:57:53,708 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 20:57:53,708 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 20:57:53,708 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 20:57:53,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-21 20:57:53,731 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 20:57:53,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:53,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:53,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:53,752 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:53,759 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-21 20:57:53,771 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 20:57:53,772 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 20:57:53,772 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 20:57:53,772 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 20:57:53,772 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 20:57:53,773 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 20:57:53,773 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 20:57:53,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-21 20:57:53,791 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 20:57:53,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:53,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:53,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:53,812 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:53,820 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-21 20:57:53,832 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 20:57:53,832 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 20:57:53,833 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 20:57:53,833 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 20:57:53,833 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 20:57:53,834 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 20:57:53,834 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 20:57:53,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-21 20:57:53,855 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-21 20:57:53,858 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-21 20:57:53,859 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-21 20:57:53,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:53,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:53,865 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:53,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-21 20:57:53,872 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-21 20:57:53,873 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-21 20:57:53,873 INFO L513 LassoAnalysis]: Proved termination. [2023-11-21 20:57:53,873 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 7 Supporting invariants [] [2023-11-21 20:57:53,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:53,900 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-21 20:57:53,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:53,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 20:57:53,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:57:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:54,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-21 20:57:54,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:57:54,498 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:57:54,501 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2023-11-21 20:57:54,503 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 49 states and 50 transitions. cyclomatic complexity: 2 Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:54,601 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 49 states and 50 transitions. cyclomatic complexity: 2. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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 141 states and 144 transitions. Complement of second has 7 states. [2023-11-21 20:57:54,602 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 [2023-11-21 20:57:54,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:54,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2023-11-21 20:57:54,607 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 2 letters. Loop has 47 letters. [2023-11-21 20:57:54,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 20:57:54,611 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-21 20:57:54,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:54,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 20:57:54,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:57:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:54,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-21 20:57:54,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:57:54,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:55,184 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:57:55,188 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 7 loop predicates [2023-11-21 20:57:55,190 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 49 states and 50 transitions. cyclomatic complexity: 2 Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:55,465 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 49 states and 50 transitions. cyclomatic complexity: 2. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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 179 states and 184 transitions. Complement of second has 17 states. [2023-11-21 20:57:55,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2023-11-21 20:57:55,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:55,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 68 transitions. [2023-11-21 20:57:55,470 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 68 transitions. Stem has 2 letters. Loop has 47 letters. [2023-11-21 20:57:55,474 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 20:57:55,474 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 68 transitions. Stem has 49 letters. Loop has 47 letters. [2023-11-21 20:57:55,479 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 20:57:55,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 68 transitions. Stem has 2 letters. Loop has 94 letters. [2023-11-21 20:57:55,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 20:57:55,480 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 179 states and 184 transitions. [2023-11-21 20:57:55,495 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2023-11-21 20:57:55,501 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 179 states to 152 states and 156 transitions. [2023-11-21 20:57:55,501 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 104 [2023-11-21 20:57:55,503 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 105 [2023-11-21 20:57:55,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 152 states and 156 transitions. [2023-11-21 20:57:55,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 20:57:55,504 INFO L218 hiAutomatonCegarLoop]: Abstraction has 152 states and 156 transitions. [2023-11-21 20:57:55,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states and 156 transitions. [2023-11-21 20:57:55,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 106. [2023-11-21 20:57:55,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 106 states have (on average 1.028301886792453) internal successors, (109), 105 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:55,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 109 transitions. [2023-11-21 20:57:55,524 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 109 transitions. [2023-11-21 20:57:55,524 INFO L428 stractBuchiCegarLoop]: Abstraction has 106 states and 109 transitions. [2023-11-21 20:57:55,524 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-21 20:57:55,524 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 109 transitions. [2023-11-21 20:57:55,526 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2023-11-21 20:57:55,528 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 20:57:55,528 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 20:57:55,529 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:57:55,530 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:57:55,530 INFO L748 eck$LassoCheckResult]: Stem: 1049#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 1027#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_#t~post2#1, main_~j~0#1, main_~i~0#1;main_~i~0#1 := 0; 1028#L16-2 assume !!(main_~i~0#1 < 4);main_~j~0#1 := 0; 1050#L18-2 assume !!(main_~j~0#1 < 4);main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1;main_#t~post2#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 <= main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1118#L13 assume !(0 == __VERIFIER_assert_~cond#1); 1117#L13-3 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1116#L13-4 assume !(0 == __VERIFIER_assert_~cond#1); 1115#L13-7 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~i~0#1 <= 3 + main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1114#L13-8 assume !(0 == __VERIFIER_assert_~cond#1); 1113#L13-11 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= 4 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1112#L13-12 assume !(0 == __VERIFIER_assert_~cond#1); 1053#L13-15 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 1043#L18-2 [2023-11-21 20:57:55,531 INFO L750 eck$LassoCheckResult]: Loop: 1043#L18-2 assume !!(main_~j~0#1 < 4);main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1;main_#t~post2#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 <= main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1041#L13 assume !(0 == __VERIFIER_assert_~cond#1); 1023#L13-3 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1024#L13-4 assume !(0 == __VERIFIER_assert_~cond#1); 1035#L13-7 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~i~0#1 <= 3 + main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1036#L13-8 assume !(0 == __VERIFIER_assert_~cond#1); 1039#L13-11 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= 4 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1045#L13-12 assume !(0 == __VERIFIER_assert_~cond#1); 1056#L13-15 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 1111#L18-2 assume !!(main_~j~0#1 < 4);main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1;main_#t~post2#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 <= main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1110#L13 assume !(0 == __VERIFIER_assert_~cond#1); 1109#L13-3 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1108#L13-4 assume !(0 == __VERIFIER_assert_~cond#1); 1107#L13-7 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~i~0#1 <= 3 + main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1106#L13-8 assume !(0 == __VERIFIER_assert_~cond#1); 1105#L13-11 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= 4 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1104#L13-12 assume !(0 == __VERIFIER_assert_~cond#1); 1103#L13-15 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 1102#L18-2 assume !!(main_~j~0#1 < 4);main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1;main_#t~post2#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 <= main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1101#L13 assume !(0 == __VERIFIER_assert_~cond#1); 1100#L13-3 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1099#L13-4 assume !(0 == __VERIFIER_assert_~cond#1); 1098#L13-7 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~i~0#1 <= 3 + main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1097#L13-8 assume !(0 == __VERIFIER_assert_~cond#1); 1096#L13-11 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= 4 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1095#L13-12 assume !(0 == __VERIFIER_assert_~cond#1); 1094#L13-15 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 1093#L18-2 assume !!(main_~j~0#1 < 4);main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1;main_#t~post2#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 <= main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1085#L13 assume !(0 == __VERIFIER_assert_~cond#1); 1092#L13-3 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1091#L13-4 assume !(0 == __VERIFIER_assert_~cond#1); 1090#L13-7 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~i~0#1 <= 3 + main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1089#L13-8 assume !(0 == __VERIFIER_assert_~cond#1); 1088#L13-11 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= 4 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1087#L13-12 assume !(0 == __VERIFIER_assert_~cond#1); 1086#L13-15 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 1084#L18-2 assume !(main_~j~0#1 < 4); 1047#L18-3 assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 <= main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1017#L13-16 assume !(0 == __VERIFIER_assert_~cond#1); 1013#L13-19 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1014#L13-20 assume !(0 == __VERIFIER_assert_~cond#1); 1019#L13-23 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~i~0#1 <= 3 + main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1020#L13-24 assume !(0 == __VERIFIER_assert_~cond#1); 1051#L13-27 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~j~0#1 <= 4 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1029#L13-28 assume !(0 == __VERIFIER_assert_~cond#1); 1030#L13-31 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;main_~i~0#1 := 1 + (main_~i~0#1 - main_~j~0#1);havoc main_~j~0#1; 1033#L16-2 assume !!(main_~i~0#1 < 4);main_~j~0#1 := 0; 1043#L18-2 [2023-11-21 20:57:55,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:55,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1050452364, now seen corresponding path program 1 times [2023-11-21 20:57:55,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:55,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647417970] [2023-11-21 20:57:55,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:55,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:57:55,559 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:57:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:57:55,576 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:57:55,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:55,580 INFO L85 PathProgramCache]: Analyzing trace with hash 722930716, now seen corresponding path program 3 times [2023-11-21 20:57:55,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:55,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275353568] [2023-11-21 20:57:55,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:55,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:57:55,619 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:57:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:57:55,648 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:57:55,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:55,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1087022409, now seen corresponding path program 2 times [2023-11-21 20:57:55,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:55,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194604429] [2023-11-21 20:57:55,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:55,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:55,855 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 92 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:57:55,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:57:55,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194604429] [2023-11-21 20:57:55,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194604429] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:57:55,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250904666] [2023-11-21 20:57:55,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 20:57:55,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:57:55,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:55,858 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:57:55,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-21 20:57:55,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 20:57:55,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 20:57:55,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 20:57:55,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:57:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:57:56,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:57:56,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250904666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:57:56,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 20:57:56,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2023-11-21 20:57:56,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555359392] [2023-11-21 20:57:56,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:57:56,909 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 20:57:56,909 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 20:57:56,909 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 20:57:56,909 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 20:57:56,910 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-21 20:57:56,910 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:56,910 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 20:57:56,910 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 20:57:56,910 INFO L133 ssoRankerPreferences]: Filename of dumped script: hh2012-ex3.i_Iteration4_Loop [2023-11-21 20:57:56,910 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 20:57:56,910 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 20:57:56,913 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:56,915 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:56,918 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:56,920 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:56,926 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:56,928 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:56,979 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 20:57:56,979 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-21 20:57:56,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:56,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:56,980 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:56,989 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 20:57:56,989 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 20:57:57,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-21 20:57:57,011 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 20:57:57,011 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post1#1=0} Honda state: {ULTIMATE.start_main_#t~post1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 20:57:57,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:57,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:57,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:57,035 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:57,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-21 20:57:57,044 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 20:57:57,044 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 20:57:57,059 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 20:57:57,060 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_#in~cond#1=0} Honda state: {ULTIMATE.start___VERIFIER_assert_#in~cond#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 20:57:57,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:57,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:57,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:57,077 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:57,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-21 20:57:57,079 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 20:57:57,079 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 20:57:57,092 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 20:57:57,092 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond#1=0} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 20:57:57,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:57,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:57,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:57,113 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:57,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-21 20:57:57,115 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 20:57:57,115 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 20:57:57,151 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 20:57:57,152 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0#1=0} Honda state: {ULTIMATE.start_main_~j~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 20:57:57,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:57,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:57,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:57,180 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:57,188 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 20:57:57,188 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 20:57:57,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-21 20:57:57,215 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 20:57:57,216 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: [] [2023-11-21 20:57:57,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:57,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:57,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:57,241 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:57,243 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 20:57:57,243 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 20:57:57,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-21 20:57:57,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:57,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:57,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:57,282 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:57,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-21 20:57:57,284 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-21 20:57:57,284 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 20:57:57,348 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-21 20:57:57,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:57,357 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 20:57:57,357 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 20:57:57,357 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 20:57:57,358 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 20:57:57,358 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-21 20:57:57,358 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:57,358 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 20:57:57,358 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 20:57:57,358 INFO L133 ssoRankerPreferences]: Filename of dumped script: hh2012-ex3.i_Iteration4_Loop [2023-11-21 20:57:57,358 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 20:57:57,358 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 20:57:57,359 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:57,361 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:57,363 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:57,365 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:57,370 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:57,376 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 20:57:57,419 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 20:57:57,419 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-21 20:57:57,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:57,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:57,421 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:57,428 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-21 20:57:57,440 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 20:57:57,440 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 20:57:57,440 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 20:57:57,440 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 20:57:57,440 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 20:57:57,442 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 20:57:57,442 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 20:57:57,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-21 20:57:57,468 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 20:57:57,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:57,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:57,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:57,493 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:57,500 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-21 20:57:57,512 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 20:57:57,512 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 20:57:57,512 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 20:57:57,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 20:57:57,512 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 20:57:57,513 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 20:57:57,513 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 20:57:57,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-21 20:57:57,528 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 20:57:57,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:57,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:57,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:57,553 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:57,556 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 [2023-11-21 20:57:57,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-21 20:57:57,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 20:57:57,569 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 20:57:57,570 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 20:57:57,570 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 20:57:57,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 20:57:57,570 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 20:57:57,571 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 20:57:57,595 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 20:57:57,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:57,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:57,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:57,622 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:57,636 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-21 20:57:57,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-21 20:57:57,649 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 20:57:57,649 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 20:57:57,649 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 20:57:57,649 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 20:57:57,650 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 20:57:57,652 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 20:57:57,653 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 20:57:57,683 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 20:57:57,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:57,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:57,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:57,708 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:57,712 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-21 20:57:57,725 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 20:57:57,725 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 20:57:57,725 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 20:57:57,725 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 20:57:57,725 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 20:57:57,726 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 20:57:57,726 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 20:57:57,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-21 20:57:57,738 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-21 20:57:57,741 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-21 20:57:57,741 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-21 20:57:57,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:57:57,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:57,744 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:57,746 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-21 20:57:57,746 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-21 20:57:57,746 INFO L513 LassoAnalysis]: Proved termination. [2023-11-21 20:57:57,746 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 5 Supporting invariants [] [2023-11-21 20:57:57,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-21 20:57:57,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:57,768 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-21 20:57:57,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:57,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 20:57:57,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:57:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:57,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 20:57:57,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:57:58,031 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:57:58,032 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2023-11-21 20:57:58,032 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 109 transitions. cyclomatic complexity: 5 Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:58,175 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 109 transitions. cyclomatic complexity: 5. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 291 states and 297 transitions. Complement of second has 11 states. [2023-11-21 20:57:58,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2023-11-21 20:57:58,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:58,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2023-11-21 20:57:58,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 69 transitions. Stem has 12 letters. Loop has 47 letters. [2023-11-21 20:57:58,178 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 20:57:58,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 69 transitions. Stem has 59 letters. Loop has 47 letters. [2023-11-21 20:57:58,178 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 20:57:58,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 69 transitions. Stem has 12 letters. Loop has 94 letters. [2023-11-21 20:57:58,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 20:57:58,179 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 291 states and 297 transitions. [2023-11-21 20:57:58,182 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2023-11-21 20:57:58,185 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 291 states to 245 states and 251 transitions. [2023-11-21 20:57:58,186 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 104 [2023-11-21 20:57:58,186 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 105 [2023-11-21 20:57:58,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 245 states and 251 transitions. [2023-11-21 20:57:58,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 20:57:58,187 INFO L218 hiAutomatonCegarLoop]: Abstraction has 245 states and 251 transitions. [2023-11-21 20:57:58,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states and 251 transitions. [2023-11-21 20:57:58,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 172. [2023-11-21 20:57:58,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 172 states have (on average 1.0348837209302326) internal successors, (178), 171 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:58,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 178 transitions. [2023-11-21 20:57:58,198 INFO L240 hiAutomatonCegarLoop]: Abstraction has 172 states and 178 transitions. [2023-11-21 20:57:58,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:57:58,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 20:57:58,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-21 20:57:58,199 INFO L87 Difference]: Start difference. First operand 172 states and 178 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:58,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:57:58,244 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2023-11-21 20:57:58,244 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 151 states and 151 transitions. [2023-11-21 20:57:58,246 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-21 20:57:58,246 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 151 states to 0 states and 0 transitions. [2023-11-21 20:57:58,246 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-21 20:57:58,246 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-21 20:57:58,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-21 20:57:58,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:57:58,247 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 20:57:58,247 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 20:57:58,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 20:57:58,249 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 20:57:58,249 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-21 20:57:58,249 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-21 20:57:58,249 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-21 20:57:58,249 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-21 20:57:58,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.11 08:57:58 BoogieIcfgContainer [2023-11-21 20:57:58,256 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-21 20:57:58,257 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 20:57:58,257 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 20:57:58,257 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 20:57:58,258 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:57:50" (3/4) ... [2023-11-21 20:57:58,260 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 20:57:58,261 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 20:57:58,261 INFO L158 Benchmark]: Toolchain (without parser) took 8906.85ms. Allocated memory was 216.0MB in the beginning and 260.0MB in the end (delta: 44.0MB). Free memory was 168.7MB in the beginning and 175.5MB in the end (delta: -6.9MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2023-11-21 20:57:58,262 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 20:57:58,262 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.23ms. Allocated memory is still 216.0MB. Free memory was 168.7MB in the beginning and 158.1MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 20:57:58,263 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.72ms. Allocated memory is still 216.0MB. Free memory was 158.1MB in the beginning and 156.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 20:57:58,263 INFO L158 Benchmark]: Boogie Preprocessor took 75.26ms. Allocated memory is still 216.0MB. Free memory was 156.8MB in the beginning and 154.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 20:57:58,263 INFO L158 Benchmark]: RCFGBuilder took 333.64ms. Allocated memory is still 216.0MB. Free memory was 154.7MB in the beginning and 142.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 20:57:58,264 INFO L158 Benchmark]: BuchiAutomizer took 8089.96ms. Allocated memory was 216.0MB in the beginning and 260.0MB in the end (delta: 44.0MB). Free memory was 142.2MB in the beginning and 176.6MB in the end (delta: -34.4MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2023-11-21 20:57:58,264 INFO L158 Benchmark]: Witness Printer took 3.89ms. Allocated memory is still 260.0MB. Free memory was 176.6MB in the beginning and 175.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 20:57:58,266 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 346.23ms. Allocated memory is still 216.0MB. Free memory was 168.7MB in the beginning and 158.1MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.72ms. Allocated memory is still 216.0MB. Free memory was 158.1MB in the beginning and 156.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 75.26ms. Allocated memory is still 216.0MB. Free memory was 156.8MB in the beginning and 154.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 333.64ms. Allocated memory is still 216.0MB. Free memory was 154.7MB in the beginning and 142.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 8089.96ms. Allocated memory was 216.0MB in the beginning and 260.0MB in the end (delta: 44.0MB). Free memory was 142.2MB in the beginning and 176.6MB in the end (delta: -34.4MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * Witness Printer took 3.89ms. Allocated memory is still 260.0MB. Free memory was 176.6MB in the beginning and 175.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (3 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function ((-2 * i) + 7) and consists of 9 locations. One deterministic module has affine ranking function ((-2 * i) + 5) and consists of 6 locations. 3 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.0s and 5 iterations. TraceHistogramMax:4. Analysis of lassos took 5.6s. Construction of modules took 0.3s. Büchi inclusion checks took 1.9s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 119 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [1, 1, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 58/116 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 241 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 238 mSDsluCounter, 466 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 293 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 338 IncrementalHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 173 mSDtfsCounter, 338 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp84 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 53ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-21 20:57:58,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-21 20:57:58,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-21 20:57:58,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-21 20:57:58,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cefcf50-ebe6-47eb-8132-3701d1f49f40/bin/uautomizer-verify-bycVGegfSx/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