./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-lit/bh2017-ex1-poly.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-lit/bh2017-ex1-poly.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu --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 d6dbcbf51695ea037a123bcc006ce5f6db095b874a22b169ec869d834ce41de6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:58:09,150 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:58:09,225 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-19 07:58:09,231 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:58:09,231 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:58:09,258 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:58:09,259 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:58:09,259 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:58:09,260 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:58:09,261 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:58:09,261 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:58:09,262 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-19 07:58:09,263 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-19 07:58:09,263 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-19 07:58:09,264 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-19 07:58:09,264 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-19 07:58:09,270 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-19 07:58:09,271 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:58:09,271 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-19 07:58:09,272 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:58:09,272 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:58:09,273 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:58:09,273 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:58:09,274 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-19 07:58:09,274 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-19 07:58:09,275 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-19 07:58:09,275 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:58:09,276 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:58:09,276 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:58:09,277 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-19 07:58:09,277 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:58:09,278 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:58:09,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:58:09,279 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:58:09,279 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:58:09,280 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-19 07:58:09,281 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_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6dbcbf51695ea037a123bcc006ce5f6db095b874a22b169ec869d834ce41de6 [2023-11-19 07:58:09,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:58:09,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:58:09,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:58:09,602 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:58:09,603 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:58:09,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/loop-lit/bh2017-ex1-poly.i [2023-11-19 07:58:12,726 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:58:12,990 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:58:12,992 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/sv-benchmarks/c/loop-lit/bh2017-ex1-poly.i [2023-11-19 07:58:13,000 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/data/4c82c2276/bd90257b82a34ba39e5d4e2559ddd54c/FLAG90a717a90 [2023-11-19 07:58:13,023 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/data/4c82c2276/bd90257b82a34ba39e5d4e2559ddd54c [2023-11-19 07:58:13,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:58:13,035 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:58:13,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:13,038 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:58:13,043 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:58:13,044 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:13" (1/1) ... [2023-11-19 07:58:13,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6355e886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:13, skipping insertion in model container [2023-11-19 07:58:13,046 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:13" (1/1) ... [2023-11-19 07:58:13,068 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:58:13,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:13,268 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:58:13,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:13,299 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:58:13,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:13 WrapperNode [2023-11-19 07:58:13,300 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:13,301 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:13,302 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:58:13,302 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:58:13,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:13" (1/1) ... [2023-11-19 07:58:13,317 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:13" (1/1) ... [2023-11-19 07:58:13,342 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 11, calls inlined = 18, statements flattened = 98 [2023-11-19 07:58:13,343 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:13,344 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:58:13,344 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:58:13,344 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:58:13,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:13" (1/1) ... [2023-11-19 07:58:13,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:13" (1/1) ... [2023-11-19 07:58:13,356 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:13" (1/1) ... [2023-11-19 07:58:13,356 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:13" (1/1) ... [2023-11-19 07:58:13,361 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:13" (1/1) ... [2023-11-19 07:58:13,366 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:13" (1/1) ... [2023-11-19 07:58:13,367 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:13" (1/1) ... [2023-11-19 07:58:13,369 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:13" (1/1) ... [2023-11-19 07:58:13,371 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:58:13,372 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:58:13,372 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:58:13,373 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:58:13,374 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:13" (1/1) ... [2023-11-19 07:58:13,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:13,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:13,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:13,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-19 07:58:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:58:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:58:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:58:13,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:58:13,531 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:58:13,534 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:58:13,718 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:58:13,727 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:58:13,728 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:58:13,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:13 BoogieIcfgContainer [2023-11-19 07:58:13,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:58:13,732 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-19 07:58:13,733 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-19 07:58:13,737 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-19 07:58:13,738 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:58:13,738 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 07:58:13" (1/3) ... [2023-11-19 07:58:13,739 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@54dcb783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:58:13, skipping insertion in model container [2023-11-19 07:58:13,739 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:58:13,740 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:13" (2/3) ... [2023-11-19 07:58:13,740 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@54dcb783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:58:13, skipping insertion in model container [2023-11-19 07:58:13,740 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:58:13,740 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:13" (3/3) ... [2023-11-19 07:58:13,742 INFO L332 chiAutomizerObserver]: Analyzing ICFG bh2017-ex1-poly.i [2023-11-19 07:58:13,801 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-19 07:58:13,801 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-19 07:58:13,802 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-19 07:58:13,802 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-19 07:58:13,802 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-19 07:58:13,802 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-19 07:58:13,802 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-19 07:58:13,803 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-19 07:58:13,811 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) [2023-11-19 07:58:13,834 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2023-11-19 07:58:13,834 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:58:13,834 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:58:13,840 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:58:13,841 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:13,841 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-19 07:58:13,842 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) [2023-11-19 07:58:13,846 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2023-11-19 07:58:13,846 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:58:13,847 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:58:13,847 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:58:13,848 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:13,856 INFO L748 eck$LassoCheckResult]: Stem: 17#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2); 24#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_~j~0#1, main_~i~0#1;main_~i~0#1 := 0; 46#L16-2true [2023-11-19 07:58:13,857 INFO L750 eck$LassoCheckResult]: Loop: 46#L16-2true assume !!(main_~i~0#1 < 4);main_~j~0#1 := 0; 28#L18-2true assume !(main_~j~0#1 < 3); 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 <= 2 * 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 2 * main_~i~0#1 <= 6 + 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 - (if main_~j~0#1 < 0 && 0 != main_~j~0#1 % 2 then 1 + main_~j~0#1 / 2 else main_~j~0#1 / 2));havoc main_~j~0#1; 46#L16-2true [2023-11-19 07:58:13,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:13,865 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-19 07:58:13,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:13,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182742440] [2023-11-19 07:58:13,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:13,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:13,971 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:14,007 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:14,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:14,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1135295544, now seen corresponding path program 1 times [2023-11-19 07:58:14,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:14,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183336230] [2023-11-19 07:58:14,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:14,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:14,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:14,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:14,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183336230] [2023-11-19 07:58:14,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183336230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:14,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:14,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:58:14,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835104667] [2023-11-19 07:58:14,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:14,194 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:58:14,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:14,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:14,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:14,243 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) [2023-11-19 07:58:14,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:14,284 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2023-11-19 07:58:14,285 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 43 transitions. [2023-11-19 07:58:14,288 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2023-11-19 07:58:14,292 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 22 states and 23 transitions. [2023-11-19 07:58:14,293 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2023-11-19 07:58:14,294 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2023-11-19 07:58:14,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 23 transitions. [2023-11-19 07:58:14,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:14,295 INFO L218 hiAutomatonCegarLoop]: Abstraction has 22 states and 23 transitions. [2023-11-19 07:58:14,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 23 transitions. [2023-11-19 07:58:14,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-19 07:58:14,325 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) [2023-11-19 07:58:14,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2023-11-19 07:58:14,329 INFO L240 hiAutomatonCegarLoop]: Abstraction has 22 states and 23 transitions. [2023-11-19 07:58:14,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:14,340 INFO L428 stractBuchiCegarLoop]: Abstraction has 22 states and 23 transitions. [2023-11-19 07:58:14,340 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-19 07:58:14,341 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 23 transitions. [2023-11-19 07:58:14,343 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2023-11-19 07:58:14,344 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:58:14,344 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:58:14,345 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:58:14,346 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] [2023-11-19 07:58:14,346 INFO L748 eck$LassoCheckResult]: Stem: 118#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2); 107#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_~j~0#1, main_~i~0#1;main_~i~0#1 := 0; 108#L16-2 [2023-11-19 07:58:14,346 INFO L750 eck$LassoCheckResult]: Loop: 108#L16-2 assume !!(main_~i~0#1 < 4);main_~j~0#1 := 0; 115#L18-2 assume !!(main_~j~0#1 < 3);main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1;main_~j~0#1 := 2 + main_~j~0#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 <= 2 * 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 2 * main_~i~0#1 <= 6 + 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 < 3); 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 <= 2 * 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 2 * main_~i~0#1 <= 6 + 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 - (if main_~j~0#1 < 0 && 0 != main_~j~0#1 % 2 then 1 + main_~j~0#1 / 2 else main_~j~0#1 / 2));havoc main_~j~0#1; 108#L16-2 [2023-11-19 07:58:14,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:14,347 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-11-19 07:58:14,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:14,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698279174] [2023-11-19 07:58:14,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:14,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:14,366 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:14,376 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:14,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:14,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1841154240, now seen corresponding path program 1 times [2023-11-19 07:58:14,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:14,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495365835] [2023-11-19 07:58:14,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:14,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:14,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:14,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:14,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495365835] [2023-11-19 07:58:14,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495365835] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:58:14,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865373702] [2023-11-19 07:58:14,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:14,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:14,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:14,533 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:14,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:58:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:14,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:58:14,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:14,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:58:14,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:14,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865373702] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:58:14,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:58:14,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-11-19 07:58:14,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437598520] [2023-11-19 07:58:14,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:58:14,827 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:58:14,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:14,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:14,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:14,831 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:14,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:14,894 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2023-11-19 07:58:14,895 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 32 transitions. [2023-11-19 07:58:14,896 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 29 [2023-11-19 07:58:14,898 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 31 states and 32 transitions. [2023-11-19 07:58:14,898 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2023-11-19 07:58:14,898 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2023-11-19 07:58:14,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 32 transitions. [2023-11-19 07:58:14,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:14,899 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31 states and 32 transitions. [2023-11-19 07:58:14,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 32 transitions. [2023-11-19 07:58:14,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-19 07:58:14,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.032258064516129) internal successors, (32), 30 states have internal predecessors, (32), 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) [2023-11-19 07:58:14,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2023-11-19 07:58:14,903 INFO L240 hiAutomatonCegarLoop]: Abstraction has 31 states and 32 transitions. [2023-11-19 07:58:14,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:58:14,907 INFO L428 stractBuchiCegarLoop]: Abstraction has 31 states and 32 transitions. [2023-11-19 07:58:14,908 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-19 07:58:14,908 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 32 transitions. [2023-11-19 07:58:14,911 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 29 [2023-11-19 07:58:14,914 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:58:14,914 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:58:14,915 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:58:14,915 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:14,915 INFO L748 eck$LassoCheckResult]: Stem: 293#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2); 281#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_~j~0#1, main_~i~0#1;main_~i~0#1 := 0; 282#L16-2 [2023-11-19 07:58:14,915 INFO L750 eck$LassoCheckResult]: Loop: 282#L16-2 assume !!(main_~i~0#1 < 4);main_~j~0#1 := 0; 290#L18-2 assume !!(main_~j~0#1 < 3);main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1;main_~j~0#1 := 2 + main_~j~0#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; 288#L13 assume !(0 == __VERIFIER_assert_~cond#1); 289#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 <= 2 * main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 304#L13-4 assume !(0 == __VERIFIER_assert_~cond#1); 303#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 2 * main_~i~0#1 <= 6 + main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 302#L13-8 assume !(0 == __VERIFIER_assert_~cond#1); 301#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; 300#L13-12 assume !(0 == __VERIFIER_assert_~cond#1); 295#L13-15 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 296#L18-2 assume !!(main_~j~0#1 < 3);main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1;main_~j~0#1 := 2 + main_~j~0#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; 299#L13 assume !(0 == __VERIFIER_assert_~cond#1); 279#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 <= 2 * main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 280#L13-4 assume !(0 == __VERIFIER_assert_~cond#1); 285#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 2 * main_~i~0#1 <= 6 + main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 286#L13-8 assume !(0 == __VERIFIER_assert_~cond#1); 287#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; 291#L13-12 assume !(0 == __VERIFIER_assert_~cond#1); 297#L13-15 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 298#L18-2 assume !(main_~j~0#1 < 3); 292#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; 276#L13-16 assume !(0 == __VERIFIER_assert_~cond#1); 274#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 <= 2 * main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 275#L13-20 assume !(0 == __VERIFIER_assert_~cond#1); 277#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 2 * main_~i~0#1 <= 6 + main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 278#L13-24 assume !(0 == __VERIFIER_assert_~cond#1); 294#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; 283#L13-28 assume !(0 == __VERIFIER_assert_~cond#1); 284#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 - (if main_~j~0#1 < 0 && 0 != main_~j~0#1 % 2 then 1 + main_~j~0#1 / 2 else main_~j~0#1 / 2));havoc main_~j~0#1; 282#L16-2 [2023-11-19 07:58:14,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:14,918 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2023-11-19 07:58:14,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:14,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818021635] [2023-11-19 07:58:14,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:14,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:14,936 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:14,941 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:14,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:14,945 INFO L85 PathProgramCache]: Analyzing trace with hash -257874632, now seen corresponding path program 2 times [2023-11-19 07:58:14,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:14,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912525688] [2023-11-19 07:58:14,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:14,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:15,031 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:15,069 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:15,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:15,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2038304950, now seen corresponding path program 1 times [2023-11-19 07:58:15,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:15,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418366117] [2023-11-19 07:58:15,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:15,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:15,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:15,177 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:15,842 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:58:15,843 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:58:15,843 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:58:15,843 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:58:15,843 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:58:15,843 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:15,843 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:58:15,844 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:58:15,844 INFO L133 ssoRankerPreferences]: Filename of dumped script: bh2017-ex1-poly.i_Iteration3_Loop [2023-11-19 07:58:15,844 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:58:15,845 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:58:15,864 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:15,880 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:15,883 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:15,886 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:15,889 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:15,932 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:58:15,933 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:58:15,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:15,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:15,958 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:15,960 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:58:15,961 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:58:15,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-19 07:58:16,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-11-19 07:58:16,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:16,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:16,003 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:16,018 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:58:16,018 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:58:16,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-19 07:58:16,091 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:58:16,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:16,101 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:58:16,102 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:58:16,102 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:58:16,102 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:58:16,102 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:58:16,102 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:16,102 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:58:16,102 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:58:16,102 INFO L133 ssoRankerPreferences]: Filename of dumped script: bh2017-ex1-poly.i_Iteration3_Loop [2023-11-19 07:58:16,103 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:58:16,103 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:58:16,104 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:16,113 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:16,116 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:16,119 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:16,125 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:16,162 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:58:16,167 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:58:16,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:16,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:16,173 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:16,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-19 07:58:16,182 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 [2023-11-19 07:58:16,192 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:58:16,192 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:58:16,193 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:58:16,193 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:58:16,193 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:58:16,195 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:58:16,195 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:58:16,198 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:58:16,215 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:58:16,215 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:58:16,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:16,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:16,218 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:16,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-19 07:58:16,229 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:58:16,230 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:58:16,230 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:58:16,231 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 [] [2023-11-19 07:58:16,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:16,260 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:58:16,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:16,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:58:16,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:16,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:58:16,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:16,653 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:16,657 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 [2023-11-19 07:58:16,658 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 32 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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) [2023-11-19 07:58:16,736 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 32 transitions. cyclomatic complexity: 2. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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) Result 87 states and 90 transitions. Complement of second has 7 states. [2023-11-19 07:58:16,737 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 [2023-11-19 07:58:16,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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) [2023-11-19 07:58:16,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2023-11-19 07:58:16,740 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 2 letters. Loop has 29 letters. [2023-11-19 07:58:16,742 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:58:16,742 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:58:16,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:16,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:58:16,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:16,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:58:16,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:16,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:17,110 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:17,111 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2023-11-19 07:58:17,111 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 32 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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) [2023-11-19 07:58:17,233 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 32 transitions. cyclomatic complexity: 2. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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) Result 60 states and 63 transitions. Complement of second has 10 states. [2023-11-19 07:58:17,234 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 [2023-11-19 07:58:17,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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) [2023-11-19 07:58:17,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 32 transitions. [2023-11-19 07:58:17,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 32 transitions. Stem has 2 letters. Loop has 29 letters. [2023-11-19 07:58:17,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:58:17,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 32 transitions. Stem has 31 letters. Loop has 29 letters. [2023-11-19 07:58:17,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:58:17,237 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 32 transitions. Stem has 2 letters. Loop has 58 letters. [2023-11-19 07:58:17,238 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:58:17,238 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 60 states and 63 transitions. [2023-11-19 07:58:17,240 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2023-11-19 07:58:17,241 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 60 states to 51 states and 54 transitions. [2023-11-19 07:58:17,241 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2023-11-19 07:58:17,242 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2023-11-19 07:58:17,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 54 transitions. [2023-11-19 07:58:17,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:58:17,242 INFO L218 hiAutomatonCegarLoop]: Abstraction has 51 states and 54 transitions. [2023-11-19 07:58:17,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 54 transitions. [2023-11-19 07:58:17,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2023-11-19 07:58:17,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 40 states have internal predecessors, (44), 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) [2023-11-19 07:58:17,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2023-11-19 07:58:17,247 INFO L240 hiAutomatonCegarLoop]: Abstraction has 41 states and 44 transitions. [2023-11-19 07:58:17,247 INFO L428 stractBuchiCegarLoop]: Abstraction has 41 states and 44 transitions. [2023-11-19 07:58:17,247 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-19 07:58:17,247 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 44 transitions. [2023-11-19 07:58:17,248 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2023-11-19 07:58:17,248 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:58:17,248 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:58:17,248 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-19 07:58:17,249 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:17,249 INFO L748 eck$LassoCheckResult]: Stem: 708#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2); 689#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_~j~0#1, main_~i~0#1;main_~i~0#1 := 0; 690#L16-2 assume !!(main_~i~0#1 < 4);main_~j~0#1 := 0; 703#L18-2 [2023-11-19 07:58:17,249 INFO L750 eck$LassoCheckResult]: Loop: 703#L18-2 assume !!(main_~j~0#1 < 3);main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1;main_~j~0#1 := 2 + main_~j~0#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; 700#L13 assume !(0 == __VERIFIER_assert_~cond#1); 685#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 <= 2 * main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 686#L13-4 assume !(0 == __VERIFIER_assert_~cond#1); 694#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 2 * main_~i~0#1 <= 6 + main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 695#L13-8 assume !(0 == __VERIFIER_assert_~cond#1); 698#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; 705#L13-12 assume !(0 == __VERIFIER_assert_~cond#1); 710#L13-15 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 703#L18-2 [2023-11-19 07:58:17,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:17,249 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-11-19 07:58:17,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:17,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188539181] [2023-11-19 07:58:17,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:17,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:17,255 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:17,260 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:17,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:17,260 INFO L85 PathProgramCache]: Analyzing trace with hash 507021115, now seen corresponding path program 1 times [2023-11-19 07:58:17,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:17,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786263711] [2023-11-19 07:58:17,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:17,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:17,272 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:17,283 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:17,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:17,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1050452364, now seen corresponding path program 1 times [2023-11-19 07:58:17,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:17,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830118391] [2023-11-19 07:58:17,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:17,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:17,293 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:17,301 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:17,407 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:58:17,407 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:58:17,407 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:58:17,407 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:58:17,407 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:58:17,407 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:17,407 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:58:17,407 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:58:17,407 INFO L133 ssoRankerPreferences]: Filename of dumped script: bh2017-ex1-poly.i_Iteration4_Loop [2023-11-19 07:58:17,408 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:58:17,408 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:58:17,409 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:17,411 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:17,413 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:17,425 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:17,463 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:58:17,464 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:58:17,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:17,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:17,465 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:17,478 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:58:17,478 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:58:17,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-19 07:58:17,494 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:58:17,496 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: [] [2023-11-19 07:58:17,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:17,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:17,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:17,522 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:17,529 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:58:17,529 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:58:17,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-19 07:58:17,551 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:58:17,551 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: [] [2023-11-19 07:58:17,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:17,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:17,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:17,578 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:17,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-19 07:58:17,580 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:58:17,580 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:58:17,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:17,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:17,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:17,625 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:17,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-19 07:58:17,637 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:58:17,638 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:58:17,705 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:58:17,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:17,718 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:58:17,718 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:58:17,719 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:58:17,719 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:58:17,719 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:58:17,719 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:17,719 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:58:17,719 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:58:17,719 INFO L133 ssoRankerPreferences]: Filename of dumped script: bh2017-ex1-poly.i_Iteration4_Loop [2023-11-19 07:58:17,719 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:58:17,719 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:58:17,720 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:17,733 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:17,747 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:17,750 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:17,796 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:58:17,796 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:58:17,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:17,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:17,798 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:17,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-19 07:58:17,802 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 [2023-11-19 07:58:17,814 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:58:17,815 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:58:17,815 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:58:17,815 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:58:17,815 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:58:17,816 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:58:17,816 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:58:17,828 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:58:17,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:17,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:17,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:17,853 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:17,857 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 [2023-11-19 07:58:17,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-19 07:58:17,869 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:58:17,870 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:58:17,870 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:58:17,870 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:58:17,870 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:58:17,872 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:58:17,872 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:58:17,882 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:58:17,885 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:58:17,886 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:58:17,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:17,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:17,887 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:17,910 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:58:17,910 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:58:17,910 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:58:17,911 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 9 Supporting invariants [] [2023-11-19 07:58:17,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-19 07:58:17,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:17,935 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:58:17,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:17,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:58:17,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:17,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:58:17,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:18,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:18,088 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2023-11-19 07:58:18,088 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 44 transitions. cyclomatic complexity: 5 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:18,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:18,213 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 44 transitions. cyclomatic complexity: 5. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 113 states and 119 transitions. Complement of second has 9 states. [2023-11-19 07:58:18,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-19 07:58:18,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:18,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2023-11-19 07:58:18,216 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 3 letters. Loop has 9 letters. [2023-11-19 07:58:18,217 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:58:18,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 12 letters. Loop has 9 letters. [2023-11-19 07:58:18,217 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:58:18,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 3 letters. Loop has 18 letters. [2023-11-19 07:58:18,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:58:18,218 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 113 states and 119 transitions. [2023-11-19 07:58:18,224 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2023-11-19 07:58:18,225 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 113 states to 72 states and 75 transitions. [2023-11-19 07:58:18,226 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-19 07:58:18,226 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-11-19 07:58:18,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 75 transitions. [2023-11-19 07:58:18,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:58:18,226 INFO L218 hiAutomatonCegarLoop]: Abstraction has 72 states and 75 transitions. [2023-11-19 07:58:18,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states and 75 transitions. [2023-11-19 07:58:18,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2023-11-19 07:58:18,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 60 states have (on average 1.05) internal successors, (63), 59 states have internal predecessors, (63), 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) [2023-11-19 07:58:18,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2023-11-19 07:58:18,239 INFO L240 hiAutomatonCegarLoop]: Abstraction has 60 states and 63 transitions. [2023-11-19 07:58:18,239 INFO L428 stractBuchiCegarLoop]: Abstraction has 60 states and 63 transitions. [2023-11-19 07:58:18,239 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-19 07:58:18,240 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 60 states and 63 transitions. [2023-11-19 07:58:18,240 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2023-11-19 07:58:18,240 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:58:18,241 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:58:18,242 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:18,242 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:18,242 INFO L748 eck$LassoCheckResult]: Stem: 928#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2); 908#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_~j~0#1, main_~i~0#1;main_~i~0#1 := 0; 909#L16-2 assume !!(main_~i~0#1 < 4);main_~j~0#1 := 0; 929#L18-2 assume !!(main_~j~0#1 < 3);main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1;main_~j~0#1 := 2 + main_~j~0#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; 958#L13 assume !(0 == __VERIFIER_assert_~cond#1); 957#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 <= 2 * main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 956#L13-4 assume !(0 == __VERIFIER_assert_~cond#1); 944#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 2 * main_~i~0#1 <= 6 + main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 945#L13-8 assume !(0 == __VERIFIER_assert_~cond#1); 925#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; 926#L13-12 assume !(0 == __VERIFIER_assert_~cond#1); 933#L13-15 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 934#L18-2 assume !!(main_~j~0#1 < 3);main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1;main_~j~0#1 := 2 + main_~j~0#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; 950#L13 assume !(0 == __VERIFIER_assert_~cond#1); 949#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 <= 2 * main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 948#L13-4 assume !(0 == __VERIFIER_assert_~cond#1); 947#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 2 * main_~i~0#1 <= 6 + main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 942#L13-8 assume !(0 == __VERIFIER_assert_~cond#1); 943#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; 938#L13-12 assume !(0 == __VERIFIER_assert_~cond#1); 939#L13-15 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 935#L18-2 assume !(main_~j~0#1 < 3); 927#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; 901#L13-16 assume !(0 == __VERIFIER_assert_~cond#1); 899#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 <= 2 * main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 900#L13-20 assume !(0 == __VERIFIER_assert_~cond#1); 902#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 2 * main_~i~0#1 <= 6 + main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 903#L13-24 assume !(0 == __VERIFIER_assert_~cond#1); 930#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; 910#L13-28 assume !(0 == __VERIFIER_assert_~cond#1); 911#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 - (if main_~j~0#1 < 0 && 0 != main_~j~0#1 % 2 then 1 + main_~j~0#1 / 2 else main_~j~0#1 / 2));havoc main_~j~0#1; 912#L16-2 assume !!(main_~i~0#1 < 4);main_~j~0#1 := 0; 922#L18-2 [2023-11-19 07:58:18,242 INFO L750 eck$LassoCheckResult]: Loop: 922#L18-2 assume !!(main_~j~0#1 < 3);main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1;main_~j~0#1 := 2 + main_~j~0#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; 920#L13 assume !(0 == __VERIFIER_assert_~cond#1); 904#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 <= 2 * main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 905#L13-4 assume !(0 == __VERIFIER_assert_~cond#1); 913#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 2 * main_~i~0#1 <= 6 + main_~j~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 914#L13-8 assume !(0 == __VERIFIER_assert_~cond#1); 917#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; 924#L13-12 assume !(0 == __VERIFIER_assert_~cond#1); 932#L13-15 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 922#L18-2 [2023-11-19 07:58:18,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:18,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1237055979, now seen corresponding path program 2 times [2023-11-19 07:58:18,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:18,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761599944] [2023-11-19 07:58:18,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:18,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:18,262 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:18,281 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:18,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:18,282 INFO L85 PathProgramCache]: Analyzing trace with hash 507021115, now seen corresponding path program 2 times [2023-11-19 07:58:18,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:18,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281637138] [2023-11-19 07:58:18,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:18,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:18,290 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:18,299 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:18,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:18,300 INFO L85 PathProgramCache]: Analyzing trace with hash 47716263, now seen corresponding path program 3 times [2023-11-19 07:58:18,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:18,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407313556] [2023-11-19 07:58:18,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:18,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:18,321 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:18,343 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:18,455 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:58:18,456 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:58:18,456 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:58:18,456 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:58:18,456 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:58:18,456 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:18,456 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:58:18,457 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:58:18,457 INFO L133 ssoRankerPreferences]: Filename of dumped script: bh2017-ex1-poly.i_Iteration5_Loop [2023-11-19 07:58:18,457 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:58:18,457 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:58:18,458 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:18,471 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:18,473 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:18,476 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:18,519 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:58:18,519 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:58:18,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:18,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:18,525 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:18,528 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:58:18,529 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:58:18,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-19 07:58:18,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:18,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:18,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:18,574 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:18,581 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:58:18,581 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:58:18,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-19 07:58:18,701 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:58:18,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:18,710 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:58:18,710 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:58:18,710 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:58:18,710 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:58:18,710 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:58:18,711 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:18,711 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:58:18,711 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:58:18,711 INFO L133 ssoRankerPreferences]: Filename of dumped script: bh2017-ex1-poly.i_Iteration5_Loop [2023-11-19 07:58:18,711 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:58:18,711 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:58:18,712 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:18,714 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:18,727 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:18,730 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:58:18,781 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:58:18,781 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:58:18,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:18,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:18,782 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:18,793 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 [2023-11-19 07:58:18,805 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:58:18,806 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:58:18,806 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:58:18,806 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:58:18,806 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:58:18,807 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:58:18,807 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:58:18,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-19 07:58:18,824 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:58:18,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:18,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:18,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:18,844 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:18,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-19 07:58:18,849 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 [2023-11-19 07:58:18,862 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:58:18,862 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:58:18,862 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:58:18,862 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:58:18,863 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:58:18,866 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:58:18,866 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:58:18,874 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:58:18,881 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:58:18,881 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:58:18,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:58:18,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:18,885 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:18,893 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:58:18,893 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:58:18,894 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:58:18,894 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 9 Supporting invariants [] [2023-11-19 07:58:18,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-19 07:58:18,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:18,918 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:58:18,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:18,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:58:18,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:19,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:58:19,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:19,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:19,087 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2023-11-19 07:58:19,087 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 60 states and 63 transitions. cyclomatic complexity: 6 Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2023-11-19 07:58:19,169 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 60 states and 63 transitions. cyclomatic complexity: 6. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 94 states and 98 transitions. Complement of second has 9 states. [2023-11-19 07:58:19,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-19 07:58:19,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2023-11-19 07:58:19,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2023-11-19 07:58:19,171 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 32 letters. Loop has 9 letters. [2023-11-19 07:58:19,171 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:58:19,171 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:58:19,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:19,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:58:19,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:19,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:58:19,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:19,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:19,365 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2023-11-19 07:58:19,365 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 60 states and 63 transitions. cyclomatic complexity: 6 Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2023-11-19 07:58:19,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:19,529 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 60 states and 63 transitions. cyclomatic complexity: 6. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 94 states and 98 transitions. Complement of second has 11 states. [2023-11-19 07:58:19,529 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 [2023-11-19 07:58:19,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2023-11-19 07:58:19,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 21 transitions. [2023-11-19 07:58:19,533 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 32 letters. Loop has 9 letters. [2023-11-19 07:58:19,533 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:58:19,534 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:58:19,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:19,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:58:19,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:19,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:58:19,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:19,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:19,739 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2023-11-19 07:58:19,739 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 60 states and 63 transitions. cyclomatic complexity: 6 Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2023-11-19 07:58:19,845 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 60 states and 63 transitions. cyclomatic complexity: 6. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 111 states and 118 transitions. Complement of second has 8 states. [2023-11-19 07:58:19,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-19 07:58:19,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2023-11-19 07:58:19,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 42 transitions. [2023-11-19 07:58:19,850 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 42 transitions. Stem has 32 letters. Loop has 9 letters. [2023-11-19 07:58:19,851 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:58:19,851 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 42 transitions. Stem has 41 letters. Loop has 9 letters. [2023-11-19 07:58:19,851 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:58:19,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 42 transitions. Stem has 32 letters. Loop has 18 letters. [2023-11-19 07:58:19,852 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:58:19,853 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 111 states and 118 transitions. [2023-11-19 07:58:19,855 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:58:19,855 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 111 states to 0 states and 0 transitions. [2023-11-19 07:58:19,855 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-19 07:58:19,856 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-19 07:58:19,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-19 07:58:19,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:19,856 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:58:19,856 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:58:19,856 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:58:19,856 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-19 07:58:19,857 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-19 07:58:19,857 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:58:19,857 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-19 07:58:19,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 07:58:19 BoogieIcfgContainer [2023-11-19 07:58:19,865 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-19 07:58:19,865 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:58:19,865 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:58:19,865 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:58:19,866 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:13" (3/4) ... [2023-11-19 07:58:19,868 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:58:19,869 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:58:19,870 INFO L158 Benchmark]: Toolchain (without parser) took 6835.37ms. Allocated memory was 151.0MB in the beginning and 184.5MB in the end (delta: 33.6MB). Free memory was 112.6MB in the beginning and 119.8MB in the end (delta: -7.2MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2023-11-19 07:58:19,871 INFO L158 Benchmark]: CDTParser took 0.73ms. Allocated memory is still 151.0MB. Free memory was 122.5MB in the beginning and 122.3MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:58:19,871 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.55ms. Allocated memory is still 151.0MB. Free memory was 112.6MB in the beginning and 102.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:58:19,872 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.71ms. Allocated memory is still 151.0MB. Free memory was 102.1MB in the beginning and 100.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:58:19,872 INFO L158 Benchmark]: Boogie Preprocessor took 27.83ms. Allocated memory is still 151.0MB. Free memory was 100.6MB in the beginning and 99.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:58:19,873 INFO L158 Benchmark]: RCFGBuilder took 359.29ms. Allocated memory is still 151.0MB. Free memory was 99.0MB in the beginning and 87.5MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:58:19,873 INFO L158 Benchmark]: BuchiAutomizer took 6132.15ms. Allocated memory was 151.0MB in the beginning and 184.5MB in the end (delta: 33.6MB). Free memory was 87.0MB in the beginning and 120.9MB in the end (delta: -33.9MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. [2023-11-19 07:58:19,874 INFO L158 Benchmark]: Witness Printer took 4.10ms. Allocated memory is still 184.5MB. Free memory was 120.9MB in the beginning and 119.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:58:19,876 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73ms. Allocated memory is still 151.0MB. Free memory was 122.5MB in the beginning and 122.3MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.55ms. Allocated memory is still 151.0MB. Free memory was 112.6MB in the beginning and 102.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.71ms. Allocated memory is still 151.0MB. Free memory was 102.1MB in the beginning and 100.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.83ms. Allocated memory is still 151.0MB. Free memory was 100.6MB in the beginning and 99.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 359.29ms. Allocated memory is still 151.0MB. Free memory was 99.0MB in the beginning and 87.5MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 6132.15ms. Allocated memory was 151.0MB in the beginning and 184.5MB in the end (delta: 33.6MB). Free memory was 87.0MB in the beginning and 120.9MB in the end (delta: -33.9MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. * Witness Printer took 4.10ms. Allocated memory is still 184.5MB. Free memory was 120.9MB in the beginning and 119.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function ((-2 * i) + 7) and consists of 6 locations. One deterministic module has affine ranking function ((-2 * i) + 9) and consists of 5 locations. One nondeterministic module has affine ranking function ((-2 * i) + 9) and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.0s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 3.5s. Construction of modules took 0.2s. Büchi inclusion checks took 2.1s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 22 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, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/11 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 173 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 167 mSDsluCounter, 342 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 175 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 258 IncrementalHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 167 mSDtfsCounter, 258 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital24 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq142 hnf95 smp100 dnf100 smp100 tf107 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 62ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-19 07:58:19,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:20,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7525a5fd-fc2f-4dac-8fcb-a75fd40f24eb/bin/uautomizer-verify-uCwYo4JHxu/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