./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-acceleration/array_3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/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_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-acceleration/array_3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/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_9bb7ad85-e648-4081-ab4e-7a0035709d3b/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 9c5d8dd6c87f471ee77fd3b765c8ecabfaf01dd976e127275ea7c589f724f472 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:17:33,531 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:17:33,644 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-10-31 22:17:33,651 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:17:33,652 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:17:33,689 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:17:33,690 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:17:33,691 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:17:33,691 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:17:33,692 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:17:33,693 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:17:33,693 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:17:33,694 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:17:33,699 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-31 22:17:33,699 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-31 22:17:33,700 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-31 22:17:33,700 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-31 22:17:33,700 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-31 22:17:33,702 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-31 22:17:33,703 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:17:33,703 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-31 22:17:33,704 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:17:33,704 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:17:33,704 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:17:33,705 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:17:33,705 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-31 22:17:33,706 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-31 22:17:33,706 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-31 22:17:33,706 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:17:33,707 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:17:33,707 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:17:33,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:17:33,708 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-31 22:17:33,708 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:17:33,708 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:17:33,709 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:17:33,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:17:33,710 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:17:33,710 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-31 22:17:33,711 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_9bb7ad85-e648-4081-ab4e-7a0035709d3b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c5d8dd6c87f471ee77fd3b765c8ecabfaf01dd976e127275ea7c589f724f472 [2024-10-31 22:17:34,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:17:34,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:17:34,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:17:34,101 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:17:34,101 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:17:34,103 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/loop-acceleration/array_3-1.i Unable to find full path for "g++" [2024-10-31 22:17:36,724 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:17:36,986 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:17:36,988 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/sv-benchmarks/c/loop-acceleration/array_3-1.i [2024-10-31 22:17:36,998 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/data/83f483809/bf7aafa5dfe44ab3b3b2180526e8fc82/FLAG1860dd9af [2024-10-31 22:17:37,342 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/data/83f483809/bf7aafa5dfe44ab3b3b2180526e8fc82 [2024-10-31 22:17:37,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:17:37,353 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:17:37,359 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:17:37,359 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:17:37,377 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:17:37,378 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:17:37" (1/1) ... [2024-10-31 22:17:37,384 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3356b937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:37, skipping insertion in model container [2024-10-31 22:17:37,384 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:17:37" (1/1) ... [2024-10-31 22:17:37,430 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:17:37,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:17:37,757 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:17:37,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:17:37,797 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:17:37,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:37 WrapperNode [2024-10-31 22:17:37,798 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:17:37,799 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:17:37,799 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:17:37,800 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:17:37,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:37" (1/1) ... [2024-10-31 22:17:37,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:37" (1/1) ... [2024-10-31 22:17:37,836 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 45 [2024-10-31 22:17:37,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:17:37,838 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:17:37,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:17:37,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:17:37,850 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:37" (1/1) ... [2024-10-31 22:17:37,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:37" (1/1) ... [2024-10-31 22:17:37,852 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:37" (1/1) ... [2024-10-31 22:17:37,866 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 22:17:37,866 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:37" (1/1) ... [2024-10-31 22:17:37,867 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:37" (1/1) ... [2024-10-31 22:17:37,872 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:37" (1/1) ... [2024-10-31 22:17:37,876 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:37" (1/1) ... [2024-10-31 22:17:37,882 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:37" (1/1) ... [2024-10-31 22:17:37,883 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:37" (1/1) ... [2024-10-31 22:17:37,885 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:17:37,890 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:17:37,890 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:17:37,890 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:17:37,891 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:37" (1/1) ... [2024-10-31 22:17:37,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:37,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:37,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:37,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-31 22:17:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:17:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:17:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:17:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:17:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:17:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:17:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:17:37,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:17:37,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:17:37,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:17:37,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:17:38,050 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:17:38,052 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:17:38,204 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-10-31 22:17:38,204 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:17:38,217 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:17:38,217 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:17:38,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:38 BoogieIcfgContainer [2024-10-31 22:17:38,218 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:17:38,219 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-31 22:17:38,219 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-31 22:17:38,225 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-31 22:17:38,226 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:17:38,226 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.10 10:17:37" (1/3) ... [2024-10-31 22:17:38,227 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@33ea0c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:17:38, skipping insertion in model container [2024-10-31 22:17:38,228 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:17:38,228 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:37" (2/3) ... [2024-10-31 22:17:38,228 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@33ea0c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:17:38, skipping insertion in model container [2024-10-31 22:17:38,229 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:17:38,229 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:38" (3/3) ... [2024-10-31 22:17:38,230 INFO L332 chiAutomizerObserver]: Analyzing ICFG array_3-1.i [2024-10-31 22:17:38,298 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-31 22:17:38,299 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-31 22:17:38,299 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-31 22:17:38,299 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-31 22:17:38,299 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-31 22:17:38,300 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-31 22:17:38,300 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-31 22:17:38,300 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-31 22:17:38,305 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 22:17:38,326 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2024-10-31 22:17:38,326 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:17:38,326 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:17:38,333 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:17:38,333 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-10-31 22:17:38,333 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-31 22:17:38,334 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 22:17:38,336 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2024-10-31 22:17:38,336 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:17:38,336 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:17:38,337 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:17:38,337 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-10-31 22:17:38,346 INFO L745 eck$LassoCheckResult]: Stem: 12#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~post2#1, main_#t~mem3#1, main_#t~post4#1, main_~#A~0#1.base, main_~#A~0#1.offset, main_~i~0#1;call main_~#A~0#1.base, main_~#A~0#1.offset := #Ultimate.allocOnStack(4096);havoc main_~i~0#1;main_~i~0#1 := 0; 14#L24-3true [2024-10-31 22:17:38,346 INFO L747 eck$LassoCheckResult]: Loop: 14#L24-3true 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; 5#L24-2true main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 14#L24-3true [2024-10-31 22:17:38,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:38,357 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-10-31 22:17:38,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:38,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875758932] [2024-10-31 22:17:38,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:38,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:38,515 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:17:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:38,565 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:17:38,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:38,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2024-10-31 22:17:38,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:38,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102938934] [2024-10-31 22:17:38,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:38,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:38,584 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:17:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:38,597 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:17:38,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:38,599 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2024-10-31 22:17:38,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:38,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71253565] [2024-10-31 22:17:38,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:38,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:38,624 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:17:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:38,649 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:17:39,377 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:17:39,378 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:17:39,379 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:17:39,379 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:17:39,379 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:17:39,379 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:39,380 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:17:39,380 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:17:39,380 INFO L132 ssoRankerPreferences]: Filename of dumped script: array_3-1.i_Iteration1_Lasso [2024-10-31 22:17:39,380 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:17:39,380 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:17:39,407 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:39,418 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:39,449 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:39,682 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:39,685 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:39,689 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:39,693 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:39,970 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:17:39,976 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:17:39,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:39,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:39,983 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:39,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-10-31 22:17:39,987 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 22:17:40,004 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:17:40,004 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:17:40,005 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:17:40,005 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:17:40,006 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:17:40,008 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:17:40,009 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:17:40,036 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:17:40,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-10-31 22:17:40,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:40,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:40,061 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:40,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-10-31 22:17:40,064 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 22:17:40,078 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:17:40,078 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:17:40,078 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:17:40,078 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:17:40,083 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:17:40,083 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:17:40,090 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:17:40,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-10-31 22:17:40,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:40,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:40,112 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:40,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-10-31 22:17:40,115 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 22:17:40,130 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:17:40,130 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:17:40,130 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:17:40,130 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:17:40,133 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:17:40,134 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:17:40,138 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:17:40,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-10-31 22:17:40,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:40,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:40,159 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:40,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-31 22:17:40,163 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 22:17:40,175 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:17:40,175 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:17:40,176 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:17:40,176 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:17:40,180 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:17:40,180 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:17:40,186 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:17:40,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-10-31 22:17:40,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:40,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:40,210 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:40,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-10-31 22:17:40,213 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 22:17:40,229 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:17:40,229 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:17:40,229 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:17:40,229 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:17:40,233 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:17:40,233 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:17:40,243 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:17:40,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-10-31 22:17:40,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:40,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:40,264 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:40,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-10-31 22:17:40,267 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 22:17:40,280 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:17:40,280 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:17:40,281 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:17:40,281 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:17:40,285 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:17:40,285 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:17:40,291 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:17:40,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-10-31 22:17:40,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:40,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:40,313 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:40,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-10-31 22:17:40,316 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 22:17:40,330 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:17:40,330 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:17:40,330 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:17:40,330 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:17:40,333 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:17:40,333 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:17:40,340 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:17:40,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-10-31 22:17:40,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:40,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:40,362 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:40,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-10-31 22:17:40,364 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 22:17:40,378 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:17:40,379 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:17:40,379 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:17:40,379 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:17:40,382 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:17:40,382 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:17:40,393 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:17:40,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-10-31 22:17:40,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:40,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:40,411 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:40,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-10-31 22:17:40,414 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 22:17:40,428 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:17:40,428 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:17:40,429 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:17:40,429 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:17:40,431 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:17:40,432 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:17:40,437 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:17:40,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-10-31 22:17:40,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:40,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:40,461 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:40,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-10-31 22:17:40,465 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 22:17:40,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:17:40,480 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:17:40,480 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:17:40,480 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:17:40,483 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:17:40,483 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:17:40,491 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:17:40,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-10-31 22:17:40,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:40,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:40,512 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:40,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-10-31 22:17:40,516 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 22:17:40,531 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:17:40,532 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:17:40,532 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:17:40,532 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:17:40,537 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:17:40,537 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:17:40,548 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:17:40,576 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2024-10-31 22:17:40,577 INFO L444 ModelExtractionUtils]: 3 out of 13 variables were initially zero. Simplification set additionally 7 variables to zero. [2024-10-31 22:17:40,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:40,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:40,597 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:40,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-10-31 22:17:40,600 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:17:40,620 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2024-10-31 22:17:40,620 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:17:40,620 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 22:17:40,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-10-31 22:17:40,656 INFO L156 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2024-10-31 22:17:40,668 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-10-31 22:17:40,669 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-10-31 22:17:40,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:40,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:17:40,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:40,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:17:40,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:40,767 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 22:17:40,810 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 22:17:40,812 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 22:17:40,871 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 22:17:40,874 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 22:17:40,880 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 22:17:40,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2024-10-31 22:17:40,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 2 letters. Loop has 2 letters. [2024-10-31 22:17:40,883 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:17:40,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 4 letters. Loop has 2 letters. [2024-10-31 22:17:40,883 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:17:40,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 2 letters. Loop has 4 letters. [2024-10-31 22:17:40,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:17:40,887 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2024-10-31 22:17:40,891 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:17:40,896 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 10 states and 12 transitions. [2024-10-31 22:17:40,897 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2024-10-31 22:17:40,898 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-10-31 22:17:40,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2024-10-31 22:17:40,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:17:40,899 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2024-10-31 22:17:40,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2024-10-31 22:17:40,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-10-31 22:17:40,934 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 22:17:40,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2024-10-31 22:17:40,937 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2024-10-31 22:17:40,937 INFO L425 stractBuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2024-10-31 22:17:40,938 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-31 22:17:40,938 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2024-10-31 22:17:40,940 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:17:40,940 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:17:40,941 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:17:40,941 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-10-31 22:17:40,942 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-31 22:17:40,942 INFO L745 eck$LassoCheckResult]: Stem: 109#$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); 110#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~post4#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; 112#L24-3 assume !(main_~i~0#1 < 1024); 113#L24-4 main_~i~0#1 := 0; 111#L28-4 [2024-10-31 22:17:40,942 INFO L747 eck$LassoCheckResult]: Loop: 111#L28-4 call main_#t~mem3#1 := read~int#1(main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4); 106#L28-1 assume !!(0 != main_#t~mem3#1);havoc main_#t~mem3#1; 107#L29 assume !(main_~i~0#1 >= 1023); 108#L28-3 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 111#L28-4 [2024-10-31 22:17:40,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:40,945 INFO L85 PathProgramCache]: Analyzing trace with hash 925707, now seen corresponding path program 1 times [2024-10-31 22:17:40,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:40,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975370162] [2024-10-31 22:17:40,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:40,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:41,056 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 22:17:41,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:41,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975370162] [2024-10-31 22:17:41,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975370162] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:41,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:41,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:17:41,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455475005] [2024-10-31 22:17:41,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:41,067 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-31 22:17:41,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:41,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1544328, now seen corresponding path program 1 times [2024-10-31 22:17:41,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:41,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462072034] [2024-10-31 22:17:41,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:41,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:41,083 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:17:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:41,093 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:17:41,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:41,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:17:41,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:17:41,174 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. cyclomatic complexity: 4 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 22:17:41,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:41,202 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2024-10-31 22:17:41,202 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 16 transitions. [2024-10-31 22:17:41,203 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:17:41,204 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 16 transitions. [2024-10-31 22:17:41,204 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2024-10-31 22:17:41,204 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2024-10-31 22:17:41,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 16 transitions. [2024-10-31 22:17:41,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:17:41,205 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 16 transitions. [2024-10-31 22:17:41,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 16 transitions. [2024-10-31 22:17:41,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 10. [2024-10-31 22:17:41,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.1) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:41,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2024-10-31 22:17:41,207 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 11 transitions. [2024-10-31 22:17:41,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:17:41,208 INFO L425 stractBuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2024-10-31 22:17:41,208 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-31 22:17:41,208 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 11 transitions. [2024-10-31 22:17:41,208 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:17:41,209 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:17:41,209 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:17:41,209 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:17:41,209 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-31 22:17:41,209 INFO L745 eck$LassoCheckResult]: Stem: 140#$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); 141#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~post4#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; 143#L24-3 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; 135#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 136#L24-3 assume !(main_~i~0#1 < 1024); 144#L24-4 main_~i~0#1 := 0; 142#L28-4 [2024-10-31 22:17:41,209 INFO L747 eck$LassoCheckResult]: Loop: 142#L28-4 call main_#t~mem3#1 := read~int#1(main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4); 137#L28-1 assume !!(0 != main_#t~mem3#1);havoc main_#t~mem3#1; 138#L29 assume !(main_~i~0#1 >= 1023); 139#L28-3 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 142#L28-4 [2024-10-31 22:17:41,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:41,210 INFO L85 PathProgramCache]: Analyzing trace with hash 889660429, now seen corresponding path program 1 times [2024-10-31 22:17:41,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:41,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745542852] [2024-10-31 22:17:41,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:41,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:41,277 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 22:17:41,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:41,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745542852] [2024-10-31 22:17:41,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745542852] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:41,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260947921] [2024-10-31 22:17:41,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:41,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:41,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:41,281 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:41,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-31 22:17:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:41,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:17:41,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:41,369 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 22:17:41,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:17:41,397 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 22:17:41,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260947921] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:17:41,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:17:41,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-31 22:17:41,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824911198] [2024-10-31 22:17:41,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:17:41,398 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-31 22:17:41,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:41,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1544328, now seen corresponding path program 2 times [2024-10-31 22:17:41,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:41,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359411181] [2024-10-31 22:17:41,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:41,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:41,406 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:17:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:41,413 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:17:41,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:41,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:17:41,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:17:41,477 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. cyclomatic complexity: 3 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 22:17:41,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:41,540 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2024-10-31 22:17:41,541 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 28 transitions. [2024-10-31 22:17:41,542 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:17:41,542 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 27 states and 28 transitions. [2024-10-31 22:17:41,543 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2024-10-31 22:17:41,543 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2024-10-31 22:17:41,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 28 transitions. [2024-10-31 22:17:41,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:17:41,543 INFO L218 hiAutomatonCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-10-31 22:17:41,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 28 transitions. [2024-10-31 22:17:41,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16. [2024-10-31 22:17:41,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.0625) internal successors, (17), 15 states have internal predecessors, (17), 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 22:17:41,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-10-31 22:17:41,546 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-10-31 22:17:41,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:17:41,547 INFO L425 stractBuchiCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-10-31 22:17:41,547 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-31 22:17:41,547 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 17 transitions. [2024-10-31 22:17:41,548 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:17:41,548 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:17:41,548 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:17:41,549 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1, 1] [2024-10-31 22:17:41,549 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-31 22:17:41,549 INFO L745 eck$LassoCheckResult]: Stem: 217#$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); 218#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~post4#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; 220#L24-3 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; 212#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 213#L24-3 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; 221#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 227#L24-3 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; 226#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 225#L24-3 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; 224#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 223#L24-3 assume !(main_~i~0#1 < 1024); 222#L24-4 main_~i~0#1 := 0; 219#L28-4 [2024-10-31 22:17:41,550 INFO L747 eck$LassoCheckResult]: Loop: 219#L28-4 call main_#t~mem3#1 := read~int#1(main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4); 214#L28-1 assume !!(0 != main_#t~mem3#1);havoc main_#t~mem3#1; 215#L29 assume !(main_~i~0#1 >= 1023); 216#L28-3 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 219#L28-4 [2024-10-31 22:17:41,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:41,550 INFO L85 PathProgramCache]: Analyzing trace with hash 833936659, now seen corresponding path program 2 times [2024-10-31 22:17:41,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:41,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098782368] [2024-10-31 22:17:41,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:41,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:41,734 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 22:17:41,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:41,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098782368] [2024-10-31 22:17:41,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098782368] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:41,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9372329] [2024-10-31 22:17:41,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:17:41,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:41,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:41,737 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:41,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-31 22:17:41,808 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:17:41,809 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:17:41,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:17:41,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:41,848 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 22:17:41,849 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:17:41,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-10-31 22:17:41,985 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 22:17:41,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9372329] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:17:41,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:17:41,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-31 22:17:41,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660398078] [2024-10-31 22:17:41,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:17:41,986 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-31 22:17:41,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:41,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1544328, now seen corresponding path program 3 times [2024-10-31 22:17:41,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:41,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047790741] [2024-10-31 22:17:41,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:41,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:41,992 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:17:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:41,997 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:17:42,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:42,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:17:42,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:17:42,054 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. cyclomatic complexity: 3 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 22:17:42,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:42,197 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2024-10-31 22:17:42,197 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 64 transitions. [2024-10-31 22:17:42,199 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:17:42,200 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 63 states and 64 transitions. [2024-10-31 22:17:42,200 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2024-10-31 22:17:42,200 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2024-10-31 22:17:42,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 64 transitions. [2024-10-31 22:17:42,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:17:42,201 INFO L218 hiAutomatonCegarLoop]: Abstraction has 63 states and 64 transitions. [2024-10-31 22:17:42,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 64 transitions. [2024-10-31 22:17:42,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 28. [2024-10-31 22:17:42,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:42,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2024-10-31 22:17:42,204 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 29 transitions. [2024-10-31 22:17:42,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:17:42,206 INFO L425 stractBuchiCegarLoop]: Abstraction has 28 states and 29 transitions. [2024-10-31 22:17:42,206 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-31 22:17:42,206 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 29 transitions. [2024-10-31 22:17:42,207 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:17:42,207 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:17:42,207 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:17:42,208 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 10, 1, 1, 1, 1] [2024-10-31 22:17:42,208 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-31 22:17:42,208 INFO L745 eck$LassoCheckResult]: Stem: 377#$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); 378#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~post4#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; 381#L24-3 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; 373#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 374#L24-3 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; 382#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 400#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 398#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 396#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 394#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 392#L24-3 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; 391#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 390#L24-3 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; 389#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 388#L24-3 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; 387#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 386#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 384#L24-3 assume !(main_~i~0#1 < 1024); 383#L24-4 main_~i~0#1 := 0; 380#L28-4 [2024-10-31 22:17:42,208 INFO L747 eck$LassoCheckResult]: Loop: 380#L28-4 call main_#t~mem3#1 := read~int#1(main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4); 375#L28-1 assume !!(0 != main_#t~mem3#1);havoc main_#t~mem3#1; 376#L29 assume !(main_~i~0#1 >= 1023); 379#L28-3 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 380#L28-4 [2024-10-31 22:17:42,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:42,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2127272351, now seen corresponding path program 3 times [2024-10-31 22:17:42,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:42,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759060547] [2024-10-31 22:17:42,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:42,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:42,544 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 22:17:42,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:42,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759060547] [2024-10-31 22:17:42,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759060547] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:42,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720116998] [2024-10-31 22:17:42,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:17:42,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:42,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:42,547 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:42,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-31 22:17:42,699 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-31 22:17:42,699 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:17:42,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-31 22:17:42,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:42,758 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 22:17:42,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:17:43,025 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 22:17:43,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720116998] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:17:43,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:17:43,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-10-31 22:17:43,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599984365] [2024-10-31 22:17:43,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:17:43,027 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-31 22:17:43,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:43,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1544328, now seen corresponding path program 4 times [2024-10-31 22:17:43,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:43,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007815238] [2024-10-31 22:17:43,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:43,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:43,032 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:17:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:43,036 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:17:43,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:43,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-31 22:17:43,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-31 22:17:43,086 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. cyclomatic complexity: 3 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 22:17:43,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:43,437 INFO L93 Difference]: Finished difference Result 135 states and 136 transitions. [2024-10-31 22:17:43,438 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 136 transitions. [2024-10-31 22:17:43,444 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:17:43,446 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 135 states and 136 transitions. [2024-10-31 22:17:43,446 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 91 [2024-10-31 22:17:43,447 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 91 [2024-10-31 22:17:43,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 135 states and 136 transitions. [2024-10-31 22:17:43,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:17:43,448 INFO L218 hiAutomatonCegarLoop]: Abstraction has 135 states and 136 transitions. [2024-10-31 22:17:43,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states and 136 transitions. [2024-10-31 22:17:43,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 52. [2024-10-31 22:17:43,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 51 states have internal predecessors, (53), 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 22:17:43,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2024-10-31 22:17:43,457 INFO L240 hiAutomatonCegarLoop]: Abstraction has 52 states and 53 transitions. [2024-10-31 22:17:43,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-31 22:17:43,459 INFO L425 stractBuchiCegarLoop]: Abstraction has 52 states and 53 transitions. [2024-10-31 22:17:43,460 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-10-31 22:17:43,461 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states and 53 transitions. [2024-10-31 22:17:43,461 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:17:43,464 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:17:43,464 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:17:43,466 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [22, 22, 1, 1, 1, 1] [2024-10-31 22:17:43,466 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-31 22:17:43,466 INFO L745 eck$LassoCheckResult]: Stem: 706#$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); 707#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~post4#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; 710#L24-3 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; 702#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 703#L24-3 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; 711#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 753#L24-3 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; 752#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 751#L24-3 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; 750#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 749#L24-3 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; 748#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 747#L24-3 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; 746#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 745#L24-3 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; 744#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 743#L24-3 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; 742#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 741#L24-3 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; 740#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 739#L24-3 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; 738#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 737#L24-3 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; 736#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 735#L24-3 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; 734#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 733#L24-3 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; 732#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 731#L24-3 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; 730#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 729#L24-3 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; 728#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 727#L24-3 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; 726#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 725#L24-3 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; 724#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 723#L24-3 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; 722#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 721#L24-3 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; 720#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 719#L24-3 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; 718#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 717#L24-3 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; 716#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 715#L24-3 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; 714#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 713#L24-3 assume !(main_~i~0#1 < 1024); 712#L24-4 main_~i~0#1 := 0; 709#L28-4 [2024-10-31 22:17:43,467 INFO L747 eck$LassoCheckResult]: Loop: 709#L28-4 call main_#t~mem3#1 := read~int#1(main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4); 704#L28-1 assume !!(0 != main_#t~mem3#1);havoc main_#t~mem3#1; 705#L29 assume !(main_~i~0#1 >= 1023); 708#L28-3 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 709#L28-4 [2024-10-31 22:17:43,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:43,467 INFO L85 PathProgramCache]: Analyzing trace with hash 828161207, now seen corresponding path program 4 times [2024-10-31 22:17:43,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:43,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363664096] [2024-10-31 22:17:43,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:43,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:44,303 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 22:17:44,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:44,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363664096] [2024-10-31 22:17:44,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363664096] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:44,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645667768] [2024-10-31 22:17:44,304 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-31 22:17:44,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:44,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:44,307 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:44,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-31 22:17:44,424 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-31 22:17:44,424 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:17:44,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-31 22:17:44,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:44,551 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 22:17:44,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:17:45,669 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 22:17:45,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645667768] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:17:45,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:17:45,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-10-31 22:17:45,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835860599] [2024-10-31 22:17:45,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:17:45,670 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-31 22:17:45,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:45,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1544328, now seen corresponding path program 5 times [2024-10-31 22:17:45,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:45,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565045348] [2024-10-31 22:17:45,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:45,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:45,681 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:17:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:45,686 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:17:45,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:45,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-31 22:17:45,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-10-31 22:17:45,745 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. cyclomatic complexity: 3 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 22:17:46,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:46,485 INFO L93 Difference]: Finished difference Result 279 states and 280 transitions. [2024-10-31 22:17:46,485 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 279 states and 280 transitions. [2024-10-31 22:17:46,491 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:17:46,494 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 279 states to 279 states and 280 transitions. [2024-10-31 22:17:46,495 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 187 [2024-10-31 22:17:46,495 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 187 [2024-10-31 22:17:46,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 279 states and 280 transitions. [2024-10-31 22:17:46,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:17:46,497 INFO L218 hiAutomatonCegarLoop]: Abstraction has 279 states and 280 transitions. [2024-10-31 22:17:46,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states and 280 transitions. [2024-10-31 22:17:46,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 100. [2024-10-31 22:17:46,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 100 states have (on average 1.01) internal successors, (101), 99 states have internal predecessors, (101), 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 22:17:46,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2024-10-31 22:17:46,505 INFO L240 hiAutomatonCegarLoop]: Abstraction has 100 states and 101 transitions. [2024-10-31 22:17:46,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-10-31 22:17:46,507 INFO L425 stractBuchiCegarLoop]: Abstraction has 100 states and 101 transitions. [2024-10-31 22:17:46,508 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-10-31 22:17:46,509 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 100 states and 101 transitions. [2024-10-31 22:17:46,510 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:17:46,510 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:17:46,510 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:17:46,513 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [46, 46, 1, 1, 1, 1] [2024-10-31 22:17:46,513 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-31 22:17:46,513 INFO L745 eck$LassoCheckResult]: Stem: 1371#$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); 1372#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~post4#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; 1375#L24-3 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; 1367#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1368#L24-3 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; 1376#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1466#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1464#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1462#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1460#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1458#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1456#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1454#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1452#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1450#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1448#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1446#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1444#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1442#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1440#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1438#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1436#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1434#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1432#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1430#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1428#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1426#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1424#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1422#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1420#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1418#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1416#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1414#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1412#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1410#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1408#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1406#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1404#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1402#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1400#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1398#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1396#L24-3 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; 1395#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1394#L24-3 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; 1393#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1392#L24-3 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; 1391#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1390#L24-3 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#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1388#L24-3 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; 1387#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1386#L24-3 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; 1385#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1384#L24-3 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; 1383#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1382#L24-3 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; 1381#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1380#L24-3 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; 1379#L24-2 main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 1378#L24-3 assume !(main_~i~0#1 < 1024); 1377#L24-4 main_~i~0#1 := 0; 1374#L28-4 [2024-10-31 22:17:46,513 INFO L747 eck$LassoCheckResult]: Loop: 1374#L28-4 call main_#t~mem3#1 := read~int#1(main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4); 1369#L28-1 assume !!(0 != main_#t~mem3#1);havoc main_#t~mem3#1; 1370#L29 assume !(main_~i~0#1 >= 1023); 1373#L28-3 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1374#L28-4 [2024-10-31 22:17:46,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:46,514 INFO L85 PathProgramCache]: Analyzing trace with hash 830581479, now seen corresponding path program 5 times [2024-10-31 22:17:46,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:46,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264583239] [2024-10-31 22:17:46,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:46,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:49,560 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 22:17:49,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:49,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264583239] [2024-10-31 22:17:49,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264583239] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:49,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301313542] [2024-10-31 22:17:49,561 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-31 22:17:49,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:49,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:49,565 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:49,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb7ad85-e648-4081-ab4e-7a0035709d3b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-31 22:18:08,359 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-10-31 22:18:08,359 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:18:08,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-31 22:18:08,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:08,604 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 22:18:08,604 INFO L311 TraceCheckSpWp]: Computing backward predicates...