./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-acceleration/array_3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4fc63b2a 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_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-acceleration/array_3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU --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 42bdab47928922c9249a376933fe7b7a33d855d426cfe04eb271066ef5c44d0a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:12:07,432 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:12:07,547 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-10-31 22:12:07,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:12:07,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:12:07,597 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:12:07,598 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:12:07,599 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:12:07,599 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:12:07,602 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:12:07,604 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:12:07,605 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:12:07,606 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:12:07,606 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-31 22:12:07,608 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-31 22:12:07,608 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-31 22:12:07,612 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-31 22:12:07,613 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-31 22:12:07,614 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-31 22:12:07,614 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:12:07,614 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-31 22:12:07,615 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:12:07,616 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:12:07,616 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:12:07,616 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:12:07,617 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-31 22:12:07,617 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-31 22:12:07,618 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-31 22:12:07,618 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:12:07,618 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:12:07,621 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:12:07,622 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:12:07,622 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-31 22:12:07,623 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:12:07,624 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:12:07,624 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:12:07,625 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:12:07,625 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:12:07,626 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-31 22:12:07,626 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_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42bdab47928922c9249a376933fe7b7a33d855d426cfe04eb271066ef5c44d0a [2024-10-31 22:12:07,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:12:08,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:12:08,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:12:08,010 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:12:08,011 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:12:08,012 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/loop-acceleration/array_3-2.i Unable to find full path for "g++" [2024-10-31 22:12:10,299 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:12:10,561 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:12:10,561 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/sv-benchmarks/c/loop-acceleration/array_3-2.i [2024-10-31 22:12:10,569 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/data/0838b5a36/9b523a98bfb64b61a804b1565b5fe302/FLAG2089fd5e7 [2024-10-31 22:12:10,910 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/data/0838b5a36/9b523a98bfb64b61a804b1565b5fe302 [2024-10-31 22:12:10,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:12:10,920 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:12:10,929 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:12:10,929 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:12:10,944 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:12:10,945 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:12:10" (1/1) ... [2024-10-31 22:12:10,947 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@688f063a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:10, skipping insertion in model container [2024-10-31 22:12:10,947 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:12:10" (1/1) ... [2024-10-31 22:12:10,985 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:12:11,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:12:11,244 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:12:11,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:12:11,287 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:12:11,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:11 WrapperNode [2024-10-31 22:12:11,288 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:12:11,289 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:12:11,290 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:12:11,290 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:12:11,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:11" (1/1) ... [2024-10-31 22:12:11,308 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:11" (1/1) ... [2024-10-31 22:12:11,327 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 48 [2024-10-31 22:12:11,327 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:12:11,328 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:12:11,328 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:12:11,328 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:12:11,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:11" (1/1) ... [2024-10-31 22:12:11,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:11" (1/1) ... [2024-10-31 22:12:11,346 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:11" (1/1) ... [2024-10-31 22:12:11,365 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-31 22:12:11,371 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:11" (1/1) ... [2024-10-31 22:12:11,371 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:11" (1/1) ... [2024-10-31 22:12:11,377 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:11" (1/1) ... [2024-10-31 22:12:11,384 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:11" (1/1) ... [2024-10-31 22:12:11,385 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:11" (1/1) ... [2024-10-31 22:12:11,387 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:11" (1/1) ... [2024-10-31 22:12:11,389 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:12:11,390 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:12:11,390 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:12:11,390 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:12:11,391 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:11" (1/1) ... [2024-10-31 22:12:11,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:12:11,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:11,442 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:12:11,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-31 22:12:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:12:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:12:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:12:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:12:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:12:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:12:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:12:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:12:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:12:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:12:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:12:11,600 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:12:11,606 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:12:11,840 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-10-31 22:12:11,840 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:12:11,857 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:12:11,858 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:12:11,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:12:11 BoogieIcfgContainer [2024-10-31 22:12:11,859 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:12:11,860 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-31 22:12:11,860 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-31 22:12:11,865 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-31 22:12:11,866 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:12:11,866 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.10 10:12:10" (1/3) ... [2024-10-31 22:12:11,868 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@15e05fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:12:11, skipping insertion in model container [2024-10-31 22:12:11,868 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:12:11,869 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:11" (2/3) ... [2024-10-31 22:12:11,871 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@15e05fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:12:11, skipping insertion in model container [2024-10-31 22:12:11,871 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:12:11,871 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:12:11" (3/3) ... [2024-10-31 22:12:11,873 INFO L332 chiAutomizerObserver]: Analyzing ICFG array_3-2.i [2024-10-31 22:12:11,948 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-31 22:12:11,949 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-31 22:12:11,949 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-31 22:12:11,950 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-31 22:12:11,950 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-31 22:12:11,950 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-31 22:12:11,950 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-31 22:12:11,951 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-31 22:12:11,960 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 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) [2024-10-31 22:12:11,988 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2024-10-31 22:12:11,988 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:12:11,989 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:12:11,995 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:12:11,995 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-10-31 22:12:11,995 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-31 22:12:11,996 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 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) [2024-10-31 22:12:11,998 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2024-10-31 22:12:11,998 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:12:11,998 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:12:11,999 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:12:11,999 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-10-31 22:12:12,008 INFO L745 eck$LassoCheckResult]: Stem: 13#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~post2#1, main_#t~mem3#1, main_#t~short4#1, main_#t~post5#1, main_~#A~0#1.base, main_~#A~0#1.offset, main_~i~0#1;call main_~#A~0#1.base, main_~#A~0#1.offset := #Ultimate.allocOnStack(4096);havoc main_~i~0#1;main_~i~0#1 := 0; 14#L23-3true [2024-10-31 22:12:12,008 INFO L747 eck$LassoCheckResult]: Loop: 14#L23-3true assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 11#L23-2true main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 14#L23-3true [2024-10-31 22:12:12,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:12,016 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-10-31 22:12:12,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:12,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234468736] [2024-10-31 22:12:12,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:12,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:12:12,173 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:12:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:12:12,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:12:12,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:12,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2024-10-31 22:12:12,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:12,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638831167] [2024-10-31 22:12:12,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:12,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:12:12,224 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:12:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:12:12,234 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:12:12,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:12,237 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2024-10-31 22:12:12,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:12,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70413173] [2024-10-31 22:12:12,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:12,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:12:12,273 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:12:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:12:12,293 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:12:12,860 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:12:12,861 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:12:12,861 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:12:12,861 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:12:12,862 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:12:12,862 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:12:12,862 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:12:12,862 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:12:12,863 INFO L132 ssoRankerPreferences]: Filename of dumped script: array_3-2.i_Iteration1_Lasso [2024-10-31 22:12:12,863 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:12:12,863 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:12:12,882 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:12:12,894 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:12:12,898 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:12:12,926 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:12:13,167 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:12:13,171 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:12:13,175 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:12:13,178 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:12:13,457 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:12:13,463 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:12:13,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:12:13,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:13,468 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:12:13,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-10-31 22:12:13,472 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 [2024-10-31 22:12:13,489 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:12:13,490 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:12:13,490 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:12:13,491 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:12:13,491 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:12:13,493 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:12:13,494 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:12:13,499 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:12:13,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:12:13,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:12:13,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:13,527 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:12:13,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-10-31 22:12:13,531 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 [2024-10-31 22:12:13,550 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:12:13,550 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:12:13,550 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:12:13,551 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:12:13,551 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:12:13,551 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:12:13,552 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:12:13,554 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:12:13,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-10-31 22:12:13,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:12:13,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:13,580 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:12:13,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-10-31 22:12:13,585 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 [2024-10-31 22:12:13,603 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:12:13,603 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:12:13,603 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:12:13,604 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:12:13,611 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:12:13,611 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:12:13,618 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:12:13,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-10-31 22:12:13,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:12:13,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:13,648 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:12:13,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-31 22:12:13,651 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 [2024-10-31 22:12:13,669 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:12:13,670 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:12:13,670 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:12:13,670 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:12:13,674 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:12:13,675 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:12:13,681 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:12:13,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-10-31 22:12:13,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:12:13,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:13,708 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:12:13,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-10-31 22:12:13,716 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 [2024-10-31 22:12:13,733 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:12:13,733 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:12:13,733 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:12:13,733 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:12:13,737 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:12:13,737 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:12:13,745 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:12:13,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-10-31 22:12:13,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:12:13,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:13,769 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:12:13,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-10-31 22:12:13,773 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 [2024-10-31 22:12:13,789 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:12:13,789 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:12:13,789 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:12:13,790 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:12:13,796 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:12:13,797 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:12:13,806 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:12:13,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-10-31 22:12:13,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:12:13,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:13,829 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:12:13,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-10-31 22:12:13,833 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 [2024-10-31 22:12:13,850 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:12:13,850 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:12:13,850 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:12:13,850 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:12:13,861 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:12:13,861 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:12:13,871 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:12:13,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-10-31 22:12:13,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:12:13,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:13,897 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:12:13,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-10-31 22:12:13,901 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 [2024-10-31 22:12:13,917 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:12:13,917 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:12:13,917 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:12:13,918 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:12:13,923 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:12:13,923 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:12:13,931 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:12:13,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-10-31 22:12:13,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:12:13,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:13,956 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:12:13,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-10-31 22:12:13,959 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 [2024-10-31 22:12:13,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:12:13,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:12:13,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:12:13,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:12:13,982 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:12:13,982 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:12:13,989 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:12:14,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-10-31 22:12:14,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:12:14,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:14,014 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:12:14,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-10-31 22:12:14,022 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 [2024-10-31 22:12:14,038 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:12:14,038 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:12:14,038 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:12:14,039 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:12:14,043 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:12:14,043 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:12:14,048 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:12:14,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-10-31 22:12:14,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:12:14,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:14,073 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:12:14,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-10-31 22:12:14,076 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 [2024-10-31 22:12:14,093 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:12:14,093 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:12:14,093 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:12:14,093 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:12:14,100 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:12:14,101 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:12:14,113 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:12:14,190 INFO L443 ModelExtractionUtils]: Simplification made 18 calls to the SMT solver. [2024-10-31 22:12:14,190 INFO L444 ModelExtractionUtils]: 1 out of 13 variables were initially zero. Simplification set additionally 9 variables to zero. [2024-10-31 22:12:14,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:12:14,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:14,204 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:12:14,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-10-31 22:12:14,210 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:12:14,230 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2024-10-31 22:12:14,230 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:12:14,231 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, v_rep(select #length ULTIMATE.start_main_~#A~0#1.base)_1) = -8*ULTIMATE.start_main_~i~0#1 + 2047*v_rep(select #length ULTIMATE.start_main_~#A~0#1.base)_1 Supporting invariants [] [2024-10-31 22:12:14,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-10-31 22:12:14,275 INFO L156 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2024-10-31 22:12:14,292 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-10-31 22:12:14,293 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-10-31 22:12:14,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:14,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:12:14,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:12:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:14,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:12:14,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:12:14,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:14,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-10-31 22:12:14,497 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-10-31 22:12:14,499 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:14,565 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 34 states and 47 transitions. Complement of second has 6 states. [2024-10-31 22:12:14,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-10-31 22:12:14,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:14,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2024-10-31 22:12:14,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 2 letters. Loop has 2 letters. [2024-10-31 22:12:14,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:12:14,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 4 letters. Loop has 2 letters. [2024-10-31 22:12:14,582 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:12:14,583 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 2 letters. Loop has 4 letters. [2024-10-31 22:12:14,583 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:12:14,584 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2024-10-31 22:12:14,589 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:12:14,595 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 10 states and 13 transitions. [2024-10-31 22:12:14,596 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2024-10-31 22:12:14,598 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-10-31 22:12:14,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2024-10-31 22:12:14,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:12:14,600 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2024-10-31 22:12:14,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2024-10-31 22:12:14,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-10-31 22:12:14,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 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) [2024-10-31 22:12:14,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2024-10-31 22:12:14,630 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2024-10-31 22:12:14,630 INFO L425 stractBuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2024-10-31 22:12:14,630 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-31 22:12:14,630 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2024-10-31 22:12:14,631 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:12:14,631 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:12:14,631 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:12:14,632 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-10-31 22:12:14,632 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-31 22:12:14,632 INFO L745 eck$LassoCheckResult]: Stem: 111#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); 112#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~post2#1, main_#t~mem3#1, main_#t~short4#1, main_#t~post5#1, main_~#A~0#1.base, main_~#A~0#1.offset, main_~i~0#1;call main_~#A~0#1.base, main_~#A~0#1.offset := #Ultimate.allocOnStack(4096);havoc main_~i~0#1;main_~i~0#1 := 0; 113#L23-3 assume !(main_~i~0#1 < 1024); 110#L23-4 main_~i~0#1 := 0; 104#L26-6 [2024-10-31 22:12:14,632 INFO L747 eck$LassoCheckResult]: Loop: 104#L26-6 main_#t~short4#1 := main_~i~0#1 < 1024; 105#L26-1 assume main_#t~short4#1;call main_#t~mem3#1 := read~int#1(main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);main_#t~short4#1 := 0 != main_#t~mem3#1; 108#L26-3 assume !!main_#t~short4#1;havoc main_#t~mem3#1;havoc main_#t~short4#1; 109#L26-5 main_#t~post5#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 104#L26-6 [2024-10-31 22:12:14,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:14,633 INFO L85 PathProgramCache]: Analyzing trace with hash 925707, now seen corresponding path program 1 times [2024-10-31 22:12:14,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:14,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934165923] [2024-10-31 22:12:14,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:14,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:14,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:14,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:14,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934165923] [2024-10-31 22:12:14,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934165923] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:14,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:14,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:12:14,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971421087] [2024-10-31 22:12:14,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:14,751 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-31 22:12:14,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:14,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1542438, now seen corresponding path program 1 times [2024-10-31 22:12:14,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:14,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438456837] [2024-10-31 22:12:14,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:14,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:12:14,761 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:12:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:12:14,768 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:12:14,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:14,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:12:14,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:12:14,912 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:14,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:12:14,943 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2024-10-31 22:12:14,944 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2024-10-31 22:12:14,944 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:12:14,945 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 18 transitions. [2024-10-31 22:12:14,945 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2024-10-31 22:12:14,945 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2024-10-31 22:12:14,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 18 transitions. [2024-10-31 22:12:14,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:12:14,946 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-10-31 22:12:14,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 18 transitions. [2024-10-31 22:12:14,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 10. [2024-10-31 22:12:14,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 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) [2024-10-31 22:12:14,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2024-10-31 22:12:14,948 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2024-10-31 22:12:14,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:12:14,949 INFO L425 stractBuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2024-10-31 22:12:14,949 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-31 22:12:14,950 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2024-10-31 22:12:14,950 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:12:14,950 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:12:14,950 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:12:14,951 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:12:14,951 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-31 22:12:14,951 INFO L745 eck$LassoCheckResult]: Stem: 141#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); 142#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~post2#1, main_#t~mem3#1, main_#t~short4#1, main_#t~post5#1, main_~#A~0#1.base, main_~#A~0#1.offset, main_~i~0#1;call main_~#A~0#1.base, main_~#A~0#1.offset := #Ultimate.allocOnStack(4096);havoc main_~i~0#1;main_~i~0#1 := 0; 144#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 137#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 138#L23-3 assume !(main_~i~0#1 < 1024); 143#L23-4 main_~i~0#1 := 0; 135#L26-6 [2024-10-31 22:12:14,951 INFO L747 eck$LassoCheckResult]: Loop: 135#L26-6 main_#t~short4#1 := main_~i~0#1 < 1024; 136#L26-1 assume main_#t~short4#1;call main_#t~mem3#1 := read~int#1(main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);main_#t~short4#1 := 0 != main_#t~mem3#1; 139#L26-3 assume !!main_#t~short4#1;havoc main_#t~mem3#1;havoc main_#t~short4#1; 140#L26-5 main_#t~post5#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 135#L26-6 [2024-10-31 22:12:14,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:14,952 INFO L85 PathProgramCache]: Analyzing trace with hash 889660429, now seen corresponding path program 1 times [2024-10-31 22:12:14,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:14,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298748978] [2024-10-31 22:12:14,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:14,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:15,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:15,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298748978] [2024-10-31 22:12:15,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298748978] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:12:15,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679073093] [2024-10-31 22:12:15,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:15,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:12:15,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:15,079 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:12:15,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-31 22:12:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:15,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:12:15,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:12:15,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:15,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:12:15,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:15,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679073093] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:12:15,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:12:15,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-31 22:12:15,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889780331] [2024-10-31 22:12:15,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:12:15,184 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-31 22:12:15,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:15,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1542438, now seen corresponding path program 2 times [2024-10-31 22:12:15,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:15,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227957554] [2024-10-31 22:12:15,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:15,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:12:15,192 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:12:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:12:15,198 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:12:15,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:15,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:12:15,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:12:15,320 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. cyclomatic complexity: 4 Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) [2024-10-31 22:12:15,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:12:15,411 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2024-10-31 22:12:15,411 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 38 transitions. [2024-10-31 22:12:15,412 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:12:15,413 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 32 states and 38 transitions. [2024-10-31 22:12:15,413 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2024-10-31 22:12:15,413 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2024-10-31 22:12:15,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 38 transitions. [2024-10-31 22:12:15,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:12:15,414 INFO L218 hiAutomatonCegarLoop]: Abstraction has 32 states and 38 transitions. [2024-10-31 22:12:15,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 38 transitions. [2024-10-31 22:12:15,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 16. [2024-10-31 22:12:15,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.125) internal successors, (18), 15 states have internal predecessors, (18), 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) [2024-10-31 22:12:15,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2024-10-31 22:12:15,416 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-10-31 22:12:15,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:12:15,418 INFO L425 stractBuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-10-31 22:12:15,418 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-31 22:12:15,418 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 18 transitions. [2024-10-31 22:12:15,418 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:12:15,419 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:12:15,419 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:12:15,419 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1, 1] [2024-10-31 22:12:15,419 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-31 22:12:15,420 INFO L745 eck$LassoCheckResult]: Stem: 224#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); 225#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~post2#1, main_#t~mem3#1, main_#t~short4#1, main_#t~post5#1, main_~#A~0#1.base, main_~#A~0#1.offset, main_~i~0#1;call main_~#A~0#1.base, main_~#A~0#1.offset := #Ultimate.allocOnStack(4096);havoc main_~i~0#1;main_~i~0#1 := 0; 226#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 219#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 220#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 227#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 232#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 231#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 230#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 229#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 228#L23-3 assume !(main_~i~0#1 < 1024); 223#L23-4 main_~i~0#1 := 0; 217#L26-6 [2024-10-31 22:12:15,420 INFO L747 eck$LassoCheckResult]: Loop: 217#L26-6 main_#t~short4#1 := main_~i~0#1 < 1024; 218#L26-1 assume main_#t~short4#1;call main_#t~mem3#1 := read~int#1(main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);main_#t~short4#1 := 0 != main_#t~mem3#1; 221#L26-3 assume !!main_#t~short4#1;havoc main_#t~mem3#1;havoc main_#t~short4#1; 222#L26-5 main_#t~post5#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 217#L26-6 [2024-10-31 22:12:15,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:15,420 INFO L85 PathProgramCache]: Analyzing trace with hash 833936659, now seen corresponding path program 2 times [2024-10-31 22:12:15,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:15,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382466173] [2024-10-31 22:12:15,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:15,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:15,599 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:15,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:15,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382466173] [2024-10-31 22:12:15,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382466173] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:12:15,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464453439] [2024-10-31 22:12:15,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:12:15,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:12:15,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:15,603 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:12:15,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-31 22:12:15,688 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:12:15,689 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:12:15,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:12:15,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:12:15,741 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:15,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:12:15,858 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:15,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464453439] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:12:15,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:12:15,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-31 22:12:15,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905923522] [2024-10-31 22:12:15,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:12:15,860 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-31 22:12:15,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:15,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1542438, now seen corresponding path program 3 times [2024-10-31 22:12:15,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:15,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007192817] [2024-10-31 22:12:15,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:15,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:12:15,872 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:12:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:12:15,883 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:12:16,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:16,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:12:16,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:12:16,017 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. cyclomatic complexity: 4 Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:16,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:12:16,205 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2024-10-31 22:12:16,206 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 80 transitions. [2024-10-31 22:12:16,208 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:12:16,209 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 68 states and 80 transitions. [2024-10-31 22:12:16,210 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2024-10-31 22:12:16,210 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2024-10-31 22:12:16,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 80 transitions. [2024-10-31 22:12:16,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:12:16,211 INFO L218 hiAutomatonCegarLoop]: Abstraction has 68 states and 80 transitions. [2024-10-31 22:12:16,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states and 80 transitions. [2024-10-31 22:12:16,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 28. [2024-10-31 22:12:16,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:16,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2024-10-31 22:12:16,214 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 30 transitions. [2024-10-31 22:12:16,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:12:16,216 INFO L425 stractBuchiCegarLoop]: Abstraction has 28 states and 30 transitions. [2024-10-31 22:12:16,216 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-31 22:12:16,216 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 30 transitions. [2024-10-31 22:12:16,217 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:12:16,217 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:12:16,217 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:12:16,218 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 10, 1, 1, 1, 1] [2024-10-31 22:12:16,218 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-31 22:12:16,218 INFO L745 eck$LassoCheckResult]: Stem: 389#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); 390#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~post2#1, main_#t~mem3#1, main_#t~short4#1, main_#t~post5#1, main_~#A~0#1.base, main_~#A~0#1.offset, main_~i~0#1;call main_~#A~0#1.base, main_~#A~0#1.offset := #Ultimate.allocOnStack(4096);havoc main_~i~0#1;main_~i~0#1 := 0; 392#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 385#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 386#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 393#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 410#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 409#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 408#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 407#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 406#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 405#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 404#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 403#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 402#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 401#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 400#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 399#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 398#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 397#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 396#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 395#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 394#L23-3 assume !(main_~i~0#1 < 1024); 391#L23-4 main_~i~0#1 := 0; 383#L26-6 [2024-10-31 22:12:16,218 INFO L747 eck$LassoCheckResult]: Loop: 383#L26-6 main_#t~short4#1 := main_~i~0#1 < 1024; 384#L26-1 assume main_#t~short4#1;call main_#t~mem3#1 := read~int#1(main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);main_#t~short4#1 := 0 != main_#t~mem3#1; 387#L26-3 assume !!main_#t~short4#1;havoc main_#t~mem3#1;havoc main_#t~short4#1; 388#L26-5 main_#t~post5#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 383#L26-6 [2024-10-31 22:12:16,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:16,219 INFO L85 PathProgramCache]: Analyzing trace with hash 2127272351, now seen corresponding path program 3 times [2024-10-31 22:12:16,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:16,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373835614] [2024-10-31 22:12:16,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:16,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:16,592 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:16,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:16,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373835614] [2024-10-31 22:12:16,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373835614] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:12:16,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120562159] [2024-10-31 22:12:16,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:12:16,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:12:16,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:16,596 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:12:16,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-31 22:12:16,766 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-31 22:12:16,766 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:12:16,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-31 22:12:16,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:12:16,855 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:16,856 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:12:17,212 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:17,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120562159] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:12:17,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:12:17,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-10-31 22:12:17,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528197107] [2024-10-31 22:12:17,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:12:17,214 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-31 22:12:17,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:17,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1542438, now seen corresponding path program 4 times [2024-10-31 22:12:17,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:17,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120702577] [2024-10-31 22:12:17,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:17,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:12:17,222 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:12:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:12:17,227 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:12:17,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:17,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-31 22:12:17,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-31 22:12:17,332 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. cyclomatic complexity: 4 Second operand has 25 states, 25 states have (on average 1.96) internal successors, (49), 25 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:17,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:12:17,713 INFO L93 Difference]: Finished difference Result 140 states and 164 transitions. [2024-10-31 22:12:17,713 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 140 states and 164 transitions. [2024-10-31 22:12:17,717 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:12:17,718 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 140 states to 140 states and 164 transitions. [2024-10-31 22:12:17,718 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 96 [2024-10-31 22:12:17,719 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 96 [2024-10-31 22:12:17,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 140 states and 164 transitions. [2024-10-31 22:12:17,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:12:17,720 INFO L218 hiAutomatonCegarLoop]: Abstraction has 140 states and 164 transitions. [2024-10-31 22:12:17,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states and 164 transitions. [2024-10-31 22:12:17,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 52. [2024-10-31 22:12:17,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 51 states have internal predecessors, (54), 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) [2024-10-31 22:12:17,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2024-10-31 22:12:17,725 INFO L240 hiAutomatonCegarLoop]: Abstraction has 52 states and 54 transitions. [2024-10-31 22:12:17,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-31 22:12:17,726 INFO L425 stractBuchiCegarLoop]: Abstraction has 52 states and 54 transitions. [2024-10-31 22:12:17,726 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-10-31 22:12:17,726 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states and 54 transitions. [2024-10-31 22:12:17,727 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:12:17,727 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:12:17,727 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:12:17,729 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [22, 22, 1, 1, 1, 1] [2024-10-31 22:12:17,729 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-31 22:12:17,729 INFO L745 eck$LassoCheckResult]: Stem: 723#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); 724#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~post2#1, main_#t~mem3#1, main_#t~short4#1, main_#t~post5#1, main_~#A~0#1.base, main_~#A~0#1.offset, main_~i~0#1;call main_~#A~0#1.base, main_~#A~0#1.offset := #Ultimate.allocOnStack(4096);havoc main_~i~0#1;main_~i~0#1 := 0; 726#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 719#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 720#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 727#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 768#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 767#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 766#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 765#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 764#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 763#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 762#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 761#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 760#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 759#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 758#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 757#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 756#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 755#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 754#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 753#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 752#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 751#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 750#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 749#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 748#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 747#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 746#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 745#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 744#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 743#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 742#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 741#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 740#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 739#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 738#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 737#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 736#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 735#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 734#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 733#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 732#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 731#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 730#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 729#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 728#L23-3 assume !(main_~i~0#1 < 1024); 725#L23-4 main_~i~0#1 := 0; 717#L26-6 [2024-10-31 22:12:17,729 INFO L747 eck$LassoCheckResult]: Loop: 717#L26-6 main_#t~short4#1 := main_~i~0#1 < 1024; 718#L26-1 assume main_#t~short4#1;call main_#t~mem3#1 := read~int#1(main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);main_#t~short4#1 := 0 != main_#t~mem3#1; 721#L26-3 assume !!main_#t~short4#1;havoc main_#t~mem3#1;havoc main_#t~short4#1; 722#L26-5 main_#t~post5#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 717#L26-6 [2024-10-31 22:12:17,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:17,730 INFO L85 PathProgramCache]: Analyzing trace with hash 828161207, now seen corresponding path program 4 times [2024-10-31 22:12:17,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:17,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062135173] [2024-10-31 22:12:17,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:17,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:18,645 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:18,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:18,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062135173] [2024-10-31 22:12:18,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062135173] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:12:18,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760492599] [2024-10-31 22:12:18,646 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-31 22:12:18,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:12:18,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:18,648 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:12:18,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-31 22:12:18,787 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-31 22:12:18,787 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:12:18,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-31 22:12:18,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:12:18,936 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:18,936 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:12:20,066 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:20,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760492599] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:12:20,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:12:20,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-10-31 22:12:20,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245620849] [2024-10-31 22:12:20,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:12:20,067 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-31 22:12:20,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:20,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1542438, now seen corresponding path program 5 times [2024-10-31 22:12:20,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:20,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461227143] [2024-10-31 22:12:20,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:20,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:12:20,078 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:12:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:12:20,083 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:12:20,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:20,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-31 22:12:20,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-10-31 22:12:20,175 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. cyclomatic complexity: 4 Second operand has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 49 states have internal predecessors, (97), 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) [2024-10-31 22:12:21,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:12:21,076 INFO L93 Difference]: Finished difference Result 284 states and 332 transitions. [2024-10-31 22:12:21,076 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 284 states and 332 transitions. [2024-10-31 22:12:21,083 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:12:21,087 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 284 states to 284 states and 332 transitions. [2024-10-31 22:12:21,087 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 192 [2024-10-31 22:12:21,087 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 192 [2024-10-31 22:12:21,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 284 states and 332 transitions. [2024-10-31 22:12:21,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:12:21,089 INFO L218 hiAutomatonCegarLoop]: Abstraction has 284 states and 332 transitions. [2024-10-31 22:12:21,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states and 332 transitions. [2024-10-31 22:12:21,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 100. [2024-10-31 22:12:21,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 100 states have (on average 1.02) internal successors, (102), 99 states have internal predecessors, (102), 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) [2024-10-31 22:12:21,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2024-10-31 22:12:21,107 INFO L240 hiAutomatonCegarLoop]: Abstraction has 100 states and 102 transitions. [2024-10-31 22:12:21,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-10-31 22:12:21,108 INFO L425 stractBuchiCegarLoop]: Abstraction has 100 states and 102 transitions. [2024-10-31 22:12:21,108 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-10-31 22:12:21,108 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 100 states and 102 transitions. [2024-10-31 22:12:21,109 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:12:21,109 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:12:21,109 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:12:21,112 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [46, 46, 1, 1, 1, 1] [2024-10-31 22:12:21,112 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-31 22:12:21,113 INFO L745 eck$LassoCheckResult]: Stem: 1393#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); 1394#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~post2#1, main_#t~mem3#1, main_#t~short4#1, main_#t~post5#1, main_~#A~0#1.base, main_~#A~0#1.offset, main_~i~0#1;call main_~#A~0#1.base, main_~#A~0#1.offset := #Ultimate.allocOnStack(4096);havoc main_~i~0#1;main_~i~0#1 := 0; 1396#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1389#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1390#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1397#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1486#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1485#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1484#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1483#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1482#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1481#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1480#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1479#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1478#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1477#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1476#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1475#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1474#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1473#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1472#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1471#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1470#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1469#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1468#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1467#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1466#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1465#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1464#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1463#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1462#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1461#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1460#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1459#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1458#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1457#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1456#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1455#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1454#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1453#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1452#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1451#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1450#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1449#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1448#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1447#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1446#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1445#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1444#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1443#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1442#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1441#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1440#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1439#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1438#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1437#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1436#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1435#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1434#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1433#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1432#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1431#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1430#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1429#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1428#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1427#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1426#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1425#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1424#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1423#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1422#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1421#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1420#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1419#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1418#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1417#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1416#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1415#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1414#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1413#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1412#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1411#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1410#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1409#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1408#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1407#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1406#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1405#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1404#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1403#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1402#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1401#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1400#L23-3 assume !!(main_~i~0#1 < 1024);havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1; 1399#L23-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1398#L23-3 assume !(main_~i~0#1 < 1024); 1395#L23-4 main_~i~0#1 := 0; 1387#L26-6 [2024-10-31 22:12:21,113 INFO L747 eck$LassoCheckResult]: Loop: 1387#L26-6 main_#t~short4#1 := main_~i~0#1 < 1024; 1388#L26-1 assume main_#t~short4#1;call main_#t~mem3#1 := read~int#1(main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);main_#t~short4#1 := 0 != main_#t~mem3#1; 1391#L26-3 assume !!main_#t~short4#1;havoc main_#t~mem3#1;havoc main_#t~short4#1; 1392#L26-5 main_#t~post5#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 1387#L26-6 [2024-10-31 22:12:21,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:21,117 INFO L85 PathProgramCache]: Analyzing trace with hash 830581479, now seen corresponding path program 5 times [2024-10-31 22:12:21,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:21,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323999259] [2024-10-31 22:12:21,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:21,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:24,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:24,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323999259] [2024-10-31 22:12:24,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323999259] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:12:24,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165093361] [2024-10-31 22:12:24,040 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-31 22:12:24,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:12:24,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:24,043 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:12:24,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08870af9-90ac-481a-b84e-59a95d4fd7c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-31 22:12:43,263 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-10-31 22:12:43,263 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:12:43,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-31 22:12:43,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:12:43,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:43,523 INFO L311 TraceCheckSpWp]: Computing backward predicates...