./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/array13_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9bd2c7ff 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_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/array13_alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bcb4bc0abad87560c498c61782d3ccf631503b41762d0db8553a6c831cbdcaff --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:00:37,305 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:00:37,384 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-19 08:00:37,390 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:00:37,390 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:00:37,418 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:00:37,418 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:00:37,419 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:00:37,420 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:00:37,421 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:00:37,421 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:00:37,422 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-19 08:00:37,423 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-19 08:00:37,423 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-19 08:00:37,424 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-19 08:00:37,424 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-19 08:00:37,425 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-19 08:00:37,425 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:00:37,426 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-19 08:00:37,427 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:00:37,427 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:00:37,428 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-19 08:00:37,428 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-19 08:00:37,429 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-19 08:00:37,429 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:00:37,430 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:00:37,430 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-19 08:00:37,431 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:00:37,431 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:00:37,432 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:00:37,432 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:00:37,433 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:00:37,434 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-19 08:00:37,434 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_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcb4bc0abad87560c498c61782d3ccf631503b41762d0db8553a6c831cbdcaff [2023-11-19 08:00:37,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:00:37,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:00:37,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:00:37,789 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:00:37,790 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:00:37,791 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/termination-15/array13_alloca.i [2023-11-19 08:00:41,080 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:00:41,374 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:00:41,375 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/sv-benchmarks/c/termination-15/array13_alloca.i [2023-11-19 08:00:41,391 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/data/db731115d/73aa9bc4023043088356ecc4d8c82ccb/FLAG65c51a8bb [2023-11-19 08:00:41,406 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/data/db731115d/73aa9bc4023043088356ecc4d8c82ccb [2023-11-19 08:00:41,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:00:41,411 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:00:41,412 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:41,413 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:00:41,418 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:00:41,419 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:41,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d1b5d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41, skipping insertion in model container [2023-11-19 08:00:41,421 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:41,487 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:00:41,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:41,821 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:00:41,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:41,964 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:00:41,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41 WrapperNode [2023-11-19 08:00:41,965 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:41,968 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:41,969 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:00:41,969 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:00:41,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:42,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:42,034 INFO L138 Inliner]: procedures = 151, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2023-11-19 08:00:42,035 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:42,035 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:00:42,036 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:00:42,036 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:00:42,046 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:42,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:42,058 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:42,059 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:42,071 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:42,080 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:42,082 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:42,087 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:42,089 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:00:42,093 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:00:42,093 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:00:42,093 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:00:42,094 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:42,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:00:42,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:42,131 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:42,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-19 08:00:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:00:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:00:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:00:42,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:00:42,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:00:42,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:00:42,259 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:00:42,261 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:00:42,421 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:00:42,429 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:00:42,429 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 08:00:42,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:42 BoogieIcfgContainer [2023-11-19 08:00:42,433 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:00:42,435 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-19 08:00:42,435 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-19 08:00:42,440 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-19 08:00:42,441 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 08:00:42,441 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 08:00:41" (1/3) ... [2023-11-19 08:00:42,442 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a2ccb59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 08:00:42, skipping insertion in model container [2023-11-19 08:00:42,442 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 08:00:42,443 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (2/3) ... [2023-11-19 08:00:42,444 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a2ccb59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 08:00:42, skipping insertion in model container [2023-11-19 08:00:42,444 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 08:00:42,444 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:42" (3/3) ... [2023-11-19 08:00:42,446 INFO L332 chiAutomizerObserver]: Analyzing ICFG array13_alloca.i [2023-11-19 08:00:42,508 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-19 08:00:42,509 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-19 08:00:42,509 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-19 08:00:42,509 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-19 08:00:42,509 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-19 08:00:42,509 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-19 08:00:42,510 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-19 08:00:42,510 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-19 08:00:42,514 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:42,535 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2023-11-19 08:00:42,535 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:00:42,535 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:00:42,541 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-11-19 08:00:42,542 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 08:00:42,542 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-19 08:00:42,542 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:42,544 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2023-11-19 08:00:42,544 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:00:42,544 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:00:42,544 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-11-19 08:00:42,545 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 08:00:42,553 INFO L748 eck$LassoCheckResult]: Stem: 10#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_#t~nondet205#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 11#L367true assume !(main_~length~0#1 < 1); 6#L367-2true call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1 % 18446744073709551616);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 3#L369true assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 4#L370-3true [2023-11-19 08:00:42,554 INFO L750 eck$LassoCheckResult]: Loop: 4#L370-3true assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 12#L372true assume main_#t~mem209#1 > 0;havoc main_#t~mem209#1;call write~int(0, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 15#L370-2true main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 4#L370-3true [2023-11-19 08:00:42,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:42,561 INFO L85 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2023-11-19 08:00:42,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:42,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704842432] [2023-11-19 08:00:42,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:42,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:42,686 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:42,717 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:42,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:42,719 INFO L85 PathProgramCache]: Analyzing trace with hash 51737, now seen corresponding path program 1 times [2023-11-19 08:00:42,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:42,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174341864] [2023-11-19 08:00:42,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:42,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:42,745 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:42,761 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:42,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:42,763 INFO L85 PathProgramCache]: Analyzing trace with hash 176707665, now seen corresponding path program 1 times [2023-11-19 08:00:42,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:42,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851798950] [2023-11-19 08:00:42,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:42,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:42,829 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:42,858 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:43,242 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 08:00:43,243 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 08:00:43,243 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 08:00:43,243 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 08:00:43,243 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 08:00:43,243 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:00:43,244 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 08:00:43,244 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 08:00:43,244 INFO L133 ssoRankerPreferences]: Filename of dumped script: array13_alloca.i_Iteration1_Lasso [2023-11-19 08:00:43,244 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 08:00:43,244 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 08:00:43,263 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:00:43,272 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:00:43,277 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:00:43,280 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:00:43,283 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:00:43,286 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:00:43,289 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:00:43,292 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:00:43,296 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:00:43,483 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:00:43,487 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:00:43,752 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 08:00:43,757 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 08:00:43,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:00:43,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:43,766 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:43,785 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:00:43,798 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:00:43,798 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:00:43,799 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:00:43,799 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:00:43,799 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:00:43,801 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:00:43,802 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:00:43,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-19 08:00:43,818 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:00:43,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:43,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:00:43,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:43,844 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:43,855 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:00:43,867 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:00:43,868 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:00:43,868 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:00:43,868 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:00:43,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-19 08:00:43,872 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 08:00:43,872 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 08:00:43,884 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:00:43,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:43,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:00:43,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:43,905 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:43,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-19 08:00:43,926 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:00:43,938 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:00:43,938 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:00:43,938 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:00:43,939 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:00:43,939 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:00:43,940 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:00:43,940 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:00:43,949 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:00:43,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:43,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:00:43,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:43,976 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:43,984 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:00:43,996 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:00:43,997 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:00:43,997 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:00:43,997 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:00:43,997 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:00:43,998 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:00:43,998 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:00:44,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-19 08:00:44,017 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:00:44,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:44,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:00:44,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:44,040 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:44,050 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:00:44,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-19 08:00:44,063 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:00:44,063 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:00:44,063 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:00:44,063 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:00:44,064 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:00:44,066 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:00:44,066 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:00:44,076 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:00:44,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:44,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:00:44,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:44,104 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:44,112 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:00:44,125 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:00:44,125 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:00:44,125 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:00:44,125 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:00:44,126 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:00:44,127 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:00:44,127 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:00:44,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-19 08:00:44,141 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:00:44,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:44,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:00:44,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:44,166 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:44,173 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:00:44,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-19 08:00:44,206 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:00:44,206 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:00:44,206 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:00:44,207 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:00:44,207 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:00:44,207 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:00:44,208 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:00:44,218 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:00:44,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:44,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:00:44,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:44,243 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:44,250 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:00:44,262 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:00:44,263 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:00:44,263 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:00:44,263 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:00:44,263 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:00:44,264 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:00:44,264 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:00:44,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-19 08:00:44,281 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:00:44,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:44,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:00:44,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:44,305 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:44,313 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:00:44,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-19 08:00:44,325 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:00:44,326 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:00:44,326 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:00:44,326 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:00:44,332 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 08:00:44,332 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 08:00:44,345 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:00:44,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:44,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:00:44,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:44,381 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:44,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-19 08:00:44,390 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:00:44,402 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:00:44,402 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:00:44,402 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:00:44,402 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:00:44,403 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:00:44,403 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:00:44,404 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:00:44,417 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:00:44,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:44,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:00:44,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:44,439 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:44,447 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:00:44,459 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:00:44,459 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:00:44,459 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:00:44,460 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:00:44,472 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 08:00:44,472 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 08:00:44,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-19 08:00:44,495 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:00:44,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:44,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:00:44,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:44,512 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:44,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-19 08:00:44,514 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:00:44,530 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:00:44,530 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:00:44,530 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:00:44,531 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:00:44,543 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 08:00:44,543 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 08:00:44,565 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 08:00:44,620 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2023-11-19 08:00:44,620 INFO L444 ModelExtractionUtils]: 2 out of 19 variables were initially zero. Simplification set additionally 13 variables to zero. [2023-11-19 08:00:44,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:00:44,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:44,655 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:44,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-19 08:00:44,657 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 08:00:44,684 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2023-11-19 08:00:44,684 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 08:00:44,685 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~arr~0#1.offset, v_rep(select #length ULTIMATE.start_main_~arr~0#1.base)_1, ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~arr~0#1.offset + 1*v_rep(select #length ULTIMATE.start_main_~arr~0#1.base)_1 - 4*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-11-19 08:00:44,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:44,725 INFO L156 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2023-11-19 08:00:44,735 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[~arr~0!base] could not be translated [2023-11-19 08:00:44,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:44,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:00:44,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:44,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:00:44,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:44,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:44,937 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 08:00:44,940 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:45,024 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 33 states and 48 transitions. Complement of second has 8 states. [2023-11-19 08:00:45,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-19 08:00:45,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:45,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2023-11-19 08:00:45,039 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 5 letters. Loop has 3 letters. [2023-11-19 08:00:45,040 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:00:45,040 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 8 letters. Loop has 3 letters. [2023-11-19 08:00:45,041 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:00:45,041 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 5 letters. Loop has 6 letters. [2023-11-19 08:00:45,042 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:00:45,048 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 48 transitions. [2023-11-19 08:00:45,055 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 08:00:45,059 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 12 states and 17 transitions. [2023-11-19 08:00:45,060 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-11-19 08:00:45,060 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2023-11-19 08:00:45,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2023-11-19 08:00:45,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:45,062 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2023-11-19 08:00:45,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2023-11-19 08:00:45,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-19 08:00:45,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 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) [2023-11-19 08:00:45,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2023-11-19 08:00:45,092 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2023-11-19 08:00:45,092 INFO L428 stractBuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2023-11-19 08:00:45,093 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-19 08:00:45,093 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2023-11-19 08:00:45,095 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 08:00:45,095 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:00:45,095 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:00:45,096 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:45,096 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 08:00:45,097 INFO L748 eck$LassoCheckResult]: Stem: 117#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 118#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_#t~nondet205#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 119#L367 assume !(main_~length~0#1 < 1); 111#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1 % 18446744073709551616);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 112#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 113#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 114#L370-4 main_~j~0#1 := 0; 115#L378-2 [2023-11-19 08:00:45,097 INFO L750 eck$LassoCheckResult]: Loop: 115#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 116#L378 assume main_#t~mem210#1 > 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 115#L378-2 [2023-11-19 08:00:45,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:45,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815510, now seen corresponding path program 1 times [2023-11-19 08:00:45,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:45,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084395800] [2023-11-19 08:00:45,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:45,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:45,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:45,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:45,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084395800] [2023-11-19 08:00:45,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084395800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:45,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:45,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:00:45,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148616244] [2023-11-19 08:00:45,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:45,264 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 08:00:45,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:45,265 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 1 times [2023-11-19 08:00:45,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:45,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254550614] [2023-11-19 08:00:45,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:45,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:45,278 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:45,301 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:45,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:45,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:45,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:00:45,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:00:45,398 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:45,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:45,433 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2023-11-19 08:00:45,434 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2023-11-19 08:00:45,435 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 08:00:45,439 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 19 transitions. [2023-11-19 08:00:45,439 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2023-11-19 08:00:45,439 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2023-11-19 08:00:45,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2023-11-19 08:00:45,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:45,440 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 19 transitions. [2023-11-19 08:00:45,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2023-11-19 08:00:45,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2023-11-19 08:00:45,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:45,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2023-11-19 08:00:45,444 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 16 transitions. [2023-11-19 08:00:45,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:00:45,446 INFO L428 stractBuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2023-11-19 08:00:45,446 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-19 08:00:45,446 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2023-11-19 08:00:45,447 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 08:00:45,448 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:00:45,448 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:00:45,450 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:45,450 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 08:00:45,450 INFO L748 eck$LassoCheckResult]: Stem: 150#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 151#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_#t~nondet205#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 152#L367 assume !(main_~length~0#1 < 1); 144#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1 % 18446744073709551616);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 145#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 146#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 153#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 155#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 154#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 147#L370-4 main_~j~0#1 := 0; 148#L378-2 [2023-11-19 08:00:45,450 INFO L750 eck$LassoCheckResult]: Loop: 148#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 149#L378 assume main_#t~mem210#1 > 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 148#L378-2 [2023-11-19 08:00:45,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:45,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1982565540, now seen corresponding path program 1 times [2023-11-19 08:00:45,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:45,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823858563] [2023-11-19 08:00:45,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:45,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:45,490 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:45,508 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:45,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:45,509 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 2 times [2023-11-19 08:00:45,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:45,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586076765] [2023-11-19 08:00:45,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:45,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:45,514 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:45,518 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:45,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:45,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1719996831, now seen corresponding path program 1 times [2023-11-19 08:00:45,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:45,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426634711] [2023-11-19 08:00:45,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:45,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:45,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:45,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:45,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426634711] [2023-11-19 08:00:45,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426634711] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:45,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486660296] [2023-11-19 08:00:45,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:45,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:45,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:45,865 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:45,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 08:00:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:45,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 08:00:45,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:45,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 08:00:46,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-19 08:00:46,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:46,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:46,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-11-19 08:00:46,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-11-19 08:00:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:46,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486660296] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:46,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:46,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 15 [2023-11-19 08:00:46,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442644304] [2023-11-19 08:00:46,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:46,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:46,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 08:00:46,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-11-19 08:00:46,198 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. cyclomatic complexity: 6 Second operand has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 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) [2023-11-19 08:00:46,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:46,339 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2023-11-19 08:00:46,340 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 30 transitions. [2023-11-19 08:00:46,341 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2023-11-19 08:00:46,341 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 30 transitions. [2023-11-19 08:00:46,342 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2023-11-19 08:00:46,342 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2023-11-19 08:00:46,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 30 transitions. [2023-11-19 08:00:46,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:46,343 INFO L218 hiAutomatonCegarLoop]: Abstraction has 22 states and 30 transitions. [2023-11-19 08:00:46,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 30 transitions. [2023-11-19 08:00:46,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2023-11-19 08:00:46,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:46,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2023-11-19 08:00:46,346 INFO L240 hiAutomatonCegarLoop]: Abstraction has 19 states and 26 transitions. [2023-11-19 08:00:46,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 08:00:46,349 INFO L428 stractBuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2023-11-19 08:00:46,349 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-19 08:00:46,349 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 26 transitions. [2023-11-19 08:00:46,352 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 08:00:46,352 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:00:46,352 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:00:46,354 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:46,355 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 08:00:46,355 INFO L748 eck$LassoCheckResult]: Stem: 275#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 276#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_#t~nondet205#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 277#L367 assume !(main_~length~0#1 < 1); 269#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1 % 18446744073709551616);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 270#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 271#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 278#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 283#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 279#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 280#L370-4 main_~j~0#1 := 0; 282#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 272#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 273#L378-2 [2023-11-19 08:00:46,355 INFO L750 eck$LassoCheckResult]: Loop: 273#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 284#L378 assume main_#t~mem210#1 > 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 273#L378-2 [2023-11-19 08:00:46,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:46,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1719996833, now seen corresponding path program 1 times [2023-11-19 08:00:46,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:46,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565974152] [2023-11-19 08:00:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:46,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:46,381 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:46,399 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:46,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:46,400 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 3 times [2023-11-19 08:00:46,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:46,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636397391] [2023-11-19 08:00:46,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:46,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:46,404 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:46,418 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:46,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:46,419 INFO L85 PathProgramCache]: Analyzing trace with hash -645451100, now seen corresponding path program 1 times [2023-11-19 08:00:46,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:46,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392404679] [2023-11-19 08:00:46,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:46,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:46,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:46,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:46,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392404679] [2023-11-19 08:00:46,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392404679] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:46,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866943978] [2023-11-19 08:00:46,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:46,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:46,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:46,585 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:46,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 08:00:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:46,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:00:46,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:46,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:46,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:46,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:46,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866943978] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:46,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:46,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-11-19 08:00:46,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342714339] [2023-11-19 08:00:46,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:46,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:46,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 08:00:46,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:00:46,827 INFO L87 Difference]: Start difference. First operand 19 states and 26 transitions. cyclomatic complexity: 10 Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 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) [2023-11-19 08:00:46,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:46,963 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2023-11-19 08:00:46,963 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 57 transitions. [2023-11-19 08:00:46,967 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2023-11-19 08:00:46,970 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 39 states and 51 transitions. [2023-11-19 08:00:46,971 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2023-11-19 08:00:46,972 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2023-11-19 08:00:46,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 51 transitions. [2023-11-19 08:00:46,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:46,972 INFO L218 hiAutomatonCegarLoop]: Abstraction has 39 states and 51 transitions. [2023-11-19 08:00:46,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 51 transitions. [2023-11-19 08:00:46,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2023-11-19 08:00:46,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 33 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:46,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2023-11-19 08:00:46,980 INFO L240 hiAutomatonCegarLoop]: Abstraction has 34 states and 45 transitions. [2023-11-19 08:00:46,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 08:00:46,983 INFO L428 stractBuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2023-11-19 08:00:46,983 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-19 08:00:46,983 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 45 transitions. [2023-11-19 08:00:46,984 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2023-11-19 08:00:46,984 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:00:46,984 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:00:46,985 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:46,985 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 08:00:46,985 INFO L748 eck$LassoCheckResult]: Stem: 444#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 445#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_#t~nondet205#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 442#L367 assume main_~length~0#1 < 1;main_~length~0#1 := 1; 435#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1 % 18446744073709551616);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 436#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 437#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 467#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 465#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 466#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 464#L372 assume main_#t~mem209#1 > 0;havoc main_#t~mem209#1;call write~int(0, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 462#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 459#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 438#L370-4 main_~j~0#1 := 0; 439#L378-2 [2023-11-19 08:00:46,986 INFO L750 eck$LassoCheckResult]: Loop: 439#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 451#L378 assume main_#t~mem210#1 > 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 439#L378-2 [2023-11-19 08:00:46,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:46,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1080825110, now seen corresponding path program 1 times [2023-11-19 08:00:46,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:46,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440418981] [2023-11-19 08:00:46,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:46,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:47,048 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:47,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:47,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440418981] [2023-11-19 08:00:47,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440418981] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:47,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823819878] [2023-11-19 08:00:47,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:47,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:47,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:47,051 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:47,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 08:00:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:47,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:00:47,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:47,165 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:47,165 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:00:47,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823819878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:47,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:00:47,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-19 08:00:47,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821101033] [2023-11-19 08:00:47,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:47,167 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 08:00:47,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:47,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 4 times [2023-11-19 08:00:47,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:47,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870021841] [2023-11-19 08:00:47,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:47,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:47,172 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:47,185 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:47,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:47,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:00:47,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:47,238 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. cyclomatic complexity: 17 Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2023-11-19 08:00:47,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:47,261 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2023-11-19 08:00:47,261 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2023-11-19 08:00:47,265 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 08:00:47,266 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 21 states and 27 transitions. [2023-11-19 08:00:47,266 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-19 08:00:47,266 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-11-19 08:00:47,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 27 transitions. [2023-11-19 08:00:47,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:47,267 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-11-19 08:00:47,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 27 transitions. [2023-11-19 08:00:47,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-19 08:00:47,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 20 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:47,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2023-11-19 08:00:47,270 INFO L240 hiAutomatonCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-11-19 08:00:47,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:00:47,273 INFO L428 stractBuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-11-19 08:00:47,275 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-19 08:00:47,275 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 27 transitions. [2023-11-19 08:00:47,278 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 08:00:47,278 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:00:47,278 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:00:47,279 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:47,279 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 08:00:47,279 INFO L748 eck$LassoCheckResult]: Stem: 548#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 549#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_#t~nondet205#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 550#L367 assume !(main_~length~0#1 < 1); 542#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1 % 18446744073709551616);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 543#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 544#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 551#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 554#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 552#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 553#L372 assume main_#t~mem209#1 > 0;havoc main_#t~mem209#1;call write~int(0, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 561#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 558#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 545#L370-4 main_~j~0#1 := 0; 546#L378-2 [2023-11-19 08:00:47,280 INFO L750 eck$LassoCheckResult]: Loop: 546#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 555#L378 assume main_#t~mem210#1 > 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 546#L378-2 [2023-11-19 08:00:47,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:47,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1781889688, now seen corresponding path program 1 times [2023-11-19 08:00:47,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:47,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747779234] [2023-11-19 08:00:47,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:47,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:47,301 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:47,317 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:47,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:47,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 5 times [2023-11-19 08:00:47,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:47,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993332849] [2023-11-19 08:00:47,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:47,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:47,324 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:47,329 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:47,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:47,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1295959589, now seen corresponding path program 1 times [2023-11-19 08:00:47,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:47,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041282427] [2023-11-19 08:00:47,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:47,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:47,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:47,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:47,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041282427] [2023-11-19 08:00:47,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041282427] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:47,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127401291] [2023-11-19 08:00:47,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:47,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:47,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:47,738 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:47,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 08:00:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:47,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 08:00:47,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:47,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 08:00:47,874 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-19 08:00:47,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2023-11-19 08:00:47,893 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-19 08:00:47,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2023-11-19 08:00:47,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-19 08:00:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:47,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:56,145 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_37| Int)) (or (forall ((v_ArrVal_90 Int)) (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~arr~0#1.base|) (+ |c_ULTIMATE.start_main_~arr~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_37| 4)) v_ArrVal_90) |c_ULTIMATE.start_main_~arr~0#1.offset|) 1)) (< |v_ULTIMATE.start_main_~i~0#1_37| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2023-11-19 08:00:56,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2023-11-19 08:00:56,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2023-11-19 08:00:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-19 08:00:56,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127401291] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:56,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:56,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-11-19 08:00:56,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300629710] [2023-11-19 08:00:56,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:56,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:56,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-19 08:00:56,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=307, Unknown=1, NotChecked=36, Total=420 [2023-11-19 08:00:56,343 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. cyclomatic complexity: 9 Second operand has 21 states, 20 states have (on average 1.7) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:56,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:56,563 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2023-11-19 08:00:56,563 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 29 transitions. [2023-11-19 08:00:56,563 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 08:00:56,564 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 23 states and 29 transitions. [2023-11-19 08:00:56,564 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2023-11-19 08:00:56,564 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2023-11-19 08:00:56,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 29 transitions. [2023-11-19 08:00:56,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:56,564 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 29 transitions. [2023-11-19 08:00:56,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 29 transitions. [2023-11-19 08:00:56,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2023-11-19 08:00:56,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:56,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2023-11-19 08:00:56,566 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 21 transitions. [2023-11-19 08:00:56,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:00:56,569 INFO L428 stractBuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2023-11-19 08:00:56,570 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-19 08:00:56,570 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2023-11-19 08:00:56,570 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 08:00:56,571 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:00:56,571 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:00:56,572 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:56,572 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 08:00:56,572 INFO L748 eck$LassoCheckResult]: Stem: 711#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 712#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_#t~nondet205#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 713#L367 assume !(main_~length~0#1 < 1); 704#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1 % 18446744073709551616);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 705#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 706#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 714#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 719#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 715#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 716#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 717#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 718#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 707#L370-4 main_~j~0#1 := 0; 708#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 709#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 710#L378-2 [2023-11-19 08:00:56,572 INFO L750 eck$LassoCheckResult]: Loop: 710#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 720#L378 assume main_#t~mem210#1 > 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 710#L378-2 [2023-11-19 08:00:56,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:56,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1238701285, now seen corresponding path program 2 times [2023-11-19 08:00:56,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:56,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362260147] [2023-11-19 08:00:56,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:56,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:56,597 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:56,616 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:56,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:56,617 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 6 times [2023-11-19 08:00:56,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:56,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287250659] [2023-11-19 08:00:56,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:56,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:56,622 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:56,627 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:56,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:56,628 INFO L85 PathProgramCache]: Analyzing trace with hash -685992546, now seen corresponding path program 2 times [2023-11-19 08:00:56,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:56,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646806614] [2023-11-19 08:00:56,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:56,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:56,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:56,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646806614] [2023-11-19 08:00:56,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646806614] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:56,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322582269] [2023-11-19 08:00:56,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:00:56,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:56,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:56,907 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:56,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-19 08:00:56,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 08:00:56,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:00:56,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-19 08:00:56,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:57,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 08:00:57,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-19 08:00:57,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:57,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:57,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-11-19 08:00:57,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-11-19 08:00:57,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:57,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322582269] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:57,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:57,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2023-11-19 08:00:57,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777719688] [2023-11-19 08:00:57,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:57,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:57,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 08:00:57,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2023-11-19 08:00:57,356 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. cyclomatic complexity: 6 Second operand has 19 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:57,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:57,559 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2023-11-19 08:00:57,559 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 37 transitions. [2023-11-19 08:00:57,560 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2023-11-19 08:00:57,560 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 29 states and 37 transitions. [2023-11-19 08:00:57,560 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2023-11-19 08:00:57,561 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2023-11-19 08:00:57,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 37 transitions. [2023-11-19 08:00:57,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:57,561 INFO L218 hiAutomatonCegarLoop]: Abstraction has 29 states and 37 transitions. [2023-11-19 08:00:57,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 37 transitions. [2023-11-19 08:00:57,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2023-11-19 08:00:57,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:57,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2023-11-19 08:00:57,564 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-11-19 08:00:57,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 08:00:57,567 INFO L428 stractBuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-11-19 08:00:57,567 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-19 08:00:57,567 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 31 transitions. [2023-11-19 08:00:57,567 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 08:00:57,568 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:00:57,568 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:00:57,569 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:57,569 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 08:00:57,569 INFO L748 eck$LassoCheckResult]: Stem: 884#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 885#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_#t~nondet205#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 886#L367 assume !(main_~length~0#1 < 1); 878#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1 % 18446744073709551616);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 879#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 880#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 887#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 895#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 888#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 889#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 890#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 892#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 893#L370-4 main_~j~0#1 := 0; 898#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 883#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 882#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 891#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 897#L378-2 [2023-11-19 08:00:57,569 INFO L750 eck$LassoCheckResult]: Loop: 897#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 896#L378 assume main_#t~mem210#1 > 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 897#L378-2 [2023-11-19 08:00:57,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:57,570 INFO L85 PathProgramCache]: Analyzing trace with hash -685992544, now seen corresponding path program 3 times [2023-11-19 08:00:57,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:57,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927933450] [2023-11-19 08:00:57,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:57,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:57,588 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:57,609 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:57,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:57,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 7 times [2023-11-19 08:00:57,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:57,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497177402] [2023-11-19 08:00:57,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:57,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:57,616 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:57,622 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:57,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:57,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2108837149, now seen corresponding path program 3 times [2023-11-19 08:00:57,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:57,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724271218] [2023-11-19 08:00:57,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:57,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:57,784 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:57,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:57,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724271218] [2023-11-19 08:00:57,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724271218] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:57,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996088218] [2023-11-19 08:00:57,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 08:00:57,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:57,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:57,788 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:57,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-19 08:00:57,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 08:00:57,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:00:57,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 08:00:57,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:57,973 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:57,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:58,042 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:58,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996088218] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:58,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:58,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-11-19 08:00:58,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738943037] [2023-11-19 08:00:58,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:58,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:58,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 08:00:58,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-11-19 08:00:58,101 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. cyclomatic complexity: 10 Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:58,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:58,210 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2023-11-19 08:00:58,210 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 43 transitions. [2023-11-19 08:00:58,211 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 08:00:58,211 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 29 states and 37 transitions. [2023-11-19 08:00:58,211 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2023-11-19 08:00:58,211 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2023-11-19 08:00:58,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 37 transitions. [2023-11-19 08:00:58,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:58,212 INFO L218 hiAutomatonCegarLoop]: Abstraction has 29 states and 37 transitions. [2023-11-19 08:00:58,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 37 transitions. [2023-11-19 08:00:58,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2023-11-19 08:00:58,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:58,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2023-11-19 08:00:58,215 INFO L240 hiAutomatonCegarLoop]: Abstraction has 26 states and 33 transitions. [2023-11-19 08:00:58,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:00:58,216 INFO L428 stractBuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2023-11-19 08:00:58,216 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-19 08:00:58,216 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 33 transitions. [2023-11-19 08:00:58,217 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 08:00:58,217 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:00:58,217 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:00:58,218 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:58,218 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 08:00:58,218 INFO L748 eck$LassoCheckResult]: Stem: 1079#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 1080#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_#t~nondet205#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 1081#L367 assume !(main_~length~0#1 < 1); 1072#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1 % 18446744073709551616);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 1073#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 1074#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 1082#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 1085#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 1086#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 1096#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 1097#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 1083#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 1084#L372 assume main_#t~mem209#1 > 0;havoc main_#t~mem209#1;call write~int(0, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 1095#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 1087#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 1088#L370-4 main_~j~0#1 := 0; 1078#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 1094#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 1093#L378-2 [2023-11-19 08:00:58,218 INFO L750 eck$LassoCheckResult]: Loop: 1093#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 1092#L378 assume main_#t~mem210#1 > 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 1093#L378-2 [2023-11-19 08:00:58,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:58,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1742222883, now seen corresponding path program 1 times [2023-11-19 08:00:58,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:58,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725683235] [2023-11-19 08:00:58,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:58,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:58,232 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:58,242 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:58,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:58,243 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 8 times [2023-11-19 08:00:58,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:58,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666613636] [2023-11-19 08:00:58,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:58,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:58,247 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:58,250 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:58,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:58,250 INFO L85 PathProgramCache]: Analyzing trace with hash -761053530, now seen corresponding path program 1 times [2023-11-19 08:00:58,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:58,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571259695] [2023-11-19 08:00:58,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:58,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:58,568 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:58,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:58,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571259695] [2023-11-19 08:00:58,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571259695] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:58,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781591372] [2023-11-19 08:00:58,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:58,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:58,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:58,571 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:58,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-19 08:00:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:58,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-19 08:00:58,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:58,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-19 08:00:58,721 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-11-19 08:00:58,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2023-11-19 08:00:58,752 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-11-19 08:00:58,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2023-11-19 08:00:58,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-11-19 08:00:58,797 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:58,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:58,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-19 08:00:58,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-11-19 08:00:59,000 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:59,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781591372] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:59,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:59,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2023-11-19 08:00:59,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375844273] [2023-11-19 08:00:59,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:59,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:59,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 08:00:59,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-11-19 08:00:59,060 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. cyclomatic complexity: 10 Second operand has 17 states, 16 states have (on average 2.0625) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:59,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:59,254 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2023-11-19 08:00:59,254 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 37 transitions. [2023-11-19 08:00:59,254 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 08:00:59,255 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 30 states and 37 transitions. [2023-11-19 08:00:59,255 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2023-11-19 08:00:59,255 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2023-11-19 08:00:59,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 37 transitions. [2023-11-19 08:00:59,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:59,256 INFO L218 hiAutomatonCegarLoop]: Abstraction has 30 states and 37 transitions. [2023-11-19 08:00:59,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 37 transitions. [2023-11-19 08:00:59,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2023-11-19 08:00:59,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:59,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2023-11-19 08:00:59,258 INFO L240 hiAutomatonCegarLoop]: Abstraction has 22 states and 27 transitions. [2023-11-19 08:00:59,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 08:00:59,259 INFO L428 stractBuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2023-11-19 08:00:59,259 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-19 08:00:59,259 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 27 transitions. [2023-11-19 08:00:59,260 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 08:00:59,260 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:00:59,260 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:00:59,260 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:59,261 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 08:00:59,261 INFO L748 eck$LassoCheckResult]: Stem: 1277#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 1278#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_#t~nondet205#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 1279#L367 assume !(main_~length~0#1 < 1); 1270#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1 % 18446744073709551616);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 1271#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 1272#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 1280#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 1283#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 1281#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 1282#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 1285#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 1286#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 1288#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 1289#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 1287#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 1273#L370-4 main_~j~0#1 := 0; 1274#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 1275#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 1276#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 1284#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 1291#L378-2 [2023-11-19 08:00:59,261 INFO L750 eck$LassoCheckResult]: Loop: 1291#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 1290#L378 assume main_#t~mem210#1 > 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 1291#L378-2 [2023-11-19 08:00:59,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:59,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1570400154, now seen corresponding path program 4 times [2023-11-19 08:00:59,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:59,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487931721] [2023-11-19 08:00:59,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:59,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:59,279 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:59,304 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:59,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:59,305 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 9 times [2023-11-19 08:00:59,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:59,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856867786] [2023-11-19 08:00:59,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:59,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:59,308 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:59,316 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:59,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:59,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1621025751, now seen corresponding path program 4 times [2023-11-19 08:00:59,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:59,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259225015] [2023-11-19 08:00:59,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:59,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:59,578 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:59,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:59,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259225015] [2023-11-19 08:00:59,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259225015] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:59,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412869168] [2023-11-19 08:00:59,579 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 08:00:59,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:59,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:59,583 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:59,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-19 08:00:59,657 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 08:00:59,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:00:59,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-19 08:00:59,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:59,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-19 08:00:59,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-11-19 08:00:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:59,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:59,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-11-19 08:00:59,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-11-19 08:00:59,897 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:59,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412869168] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:59,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:59,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 16 [2023-11-19 08:00:59,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431149169] [2023-11-19 08:00:59,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:59,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:59,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 08:00:59,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-11-19 08:00:59,952 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. cyclomatic complexity: 7 Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:00,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:00,188 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2023-11-19 08:01:00,188 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 45 transitions. [2023-11-19 08:01:00,188 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2023-11-19 08:01:00,189 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 45 transitions. [2023-11-19 08:01:00,189 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2023-11-19 08:01:00,189 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2023-11-19 08:01:00,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 45 transitions. [2023-11-19 08:01:00,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:00,190 INFO L218 hiAutomatonCegarLoop]: Abstraction has 36 states and 45 transitions. [2023-11-19 08:01:00,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 45 transitions. [2023-11-19 08:01:00,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2023-11-19 08:01:00,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 28 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:00,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2023-11-19 08:01:00,193 INFO L240 hiAutomatonCegarLoop]: Abstraction has 29 states and 37 transitions. [2023-11-19 08:01:00,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 08:01:00,194 INFO L428 stractBuchiCegarLoop]: Abstraction has 29 states and 37 transitions. [2023-11-19 08:01:00,194 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2023-11-19 08:01:00,194 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 37 transitions. [2023-11-19 08:01:00,195 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 08:01:00,195 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:01:00,195 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:01:00,196 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:00,196 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 08:01:00,196 INFO L748 eck$LassoCheckResult]: Stem: 1484#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 1485#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_#t~nondet205#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 1486#L367 assume !(main_~length~0#1 < 1); 1478#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1 % 18446744073709551616);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 1479#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 1480#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 1487#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 1495#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 1496#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 1497#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 1498#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 1488#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 1489#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 1491#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 1492#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 1493#L370-4 main_~j~0#1 := 0; 1503#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 1481#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 1482#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 1490#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 1502#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 1501#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 1500#L378-2 [2023-11-19 08:01:00,196 INFO L750 eck$LassoCheckResult]: Loop: 1500#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 1499#L378 assume main_#t~mem210#1 > 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 1500#L378-2 [2023-11-19 08:01:00,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:00,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1621025749, now seen corresponding path program 5 times [2023-11-19 08:01:00,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:00,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012205338] [2023-11-19 08:01:00,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:00,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:00,212 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:00,237 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:00,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:00,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 10 times [2023-11-19 08:01:00,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:00,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347393046] [2023-11-19 08:01:00,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:00,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:00,246 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:00,251 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:00,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:00,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1267385006, now seen corresponding path program 5 times [2023-11-19 08:01:00,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:00,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340027908] [2023-11-19 08:01:00,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:00,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:00,399 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:00,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:00,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340027908] [2023-11-19 08:01:00,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340027908] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:00,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819177336] [2023-11-19 08:01:00,400 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-19 08:01:00,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:00,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:00,402 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:00,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-19 08:01:00,490 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-19 08:01:00,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:01:00,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 08:01:00,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:00,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:00,720 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:00,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819177336] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:00,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:01:00,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2023-11-19 08:01:00,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291666633] [2023-11-19 08:01:00,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:00,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:00,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 08:01:00,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-11-19 08:01:00,781 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. cyclomatic complexity: 11 Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:00,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:00,925 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2023-11-19 08:01:00,925 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 51 transitions. [2023-11-19 08:01:00,925 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 08:01:00,926 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 34 states and 43 transitions. [2023-11-19 08:01:00,926 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2023-11-19 08:01:00,926 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2023-11-19 08:01:00,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 43 transitions. [2023-11-19 08:01:00,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:00,926 INFO L218 hiAutomatonCegarLoop]: Abstraction has 34 states and 43 transitions. [2023-11-19 08:01:00,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 43 transitions. [2023-11-19 08:01:00,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2023-11-19 08:01:00,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:00,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2023-11-19 08:01:00,929 INFO L240 hiAutomatonCegarLoop]: Abstraction has 31 states and 39 transitions. [2023-11-19 08:01:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 08:01:00,930 INFO L428 stractBuchiCegarLoop]: Abstraction has 31 states and 39 transitions. [2023-11-19 08:01:00,931 INFO L335 stractBuchiCegarLoop]: ======== Iteration 12 ============ [2023-11-19 08:01:00,931 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 39 transitions. [2023-11-19 08:01:00,931 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 08:01:00,931 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:01:00,931 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:01:00,932 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:00,932 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 08:01:00,932 INFO L748 eck$LassoCheckResult]: Stem: 1725#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 1726#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_#t~nondet205#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 1727#L367 assume !(main_~length~0#1 < 1); 1719#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1 % 18446744073709551616);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 1720#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 1721#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 1728#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 1749#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 1729#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 1730#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 1731#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 1733#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 1748#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 1747#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 1746#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 1744#L372 assume main_#t~mem209#1 > 0;havoc main_#t~mem209#1;call write~int(0, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 1736#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 1734#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 1722#L370-4 main_~j~0#1 := 0; 1723#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 1732#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 1740#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 1739#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 1738#L378-2 [2023-11-19 08:01:00,933 INFO L750 eck$LassoCheckResult]: Loop: 1738#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 1737#L378 assume main_#t~mem210#1 > 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 1738#L378-2 [2023-11-19 08:01:00,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:00,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1476197922, now seen corresponding path program 2 times [2023-11-19 08:01:00,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:00,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106707329] [2023-11-19 08:01:00,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:00,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:00,949 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:00,961 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:00,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:00,962 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 11 times [2023-11-19 08:01:00,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:00,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096100437] [2023-11-19 08:01:00,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:00,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:00,966 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:00,968 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:00,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:00,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1286996709, now seen corresponding path program 2 times [2023-11-19 08:01:00,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:00,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988933878] [2023-11-19 08:01:00,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:00,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:01,328 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:01,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:01,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988933878] [2023-11-19 08:01:01,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988933878] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:01,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962960111] [2023-11-19 08:01:01,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:01:01,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:01,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:01,345 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:01,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-19 08:01:01,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 08:01:01,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:01:01,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-19 08:01:01,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:01,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 08:01:01,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:01,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-19 08:01:01,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:01,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-19 08:01:01,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-19 08:01:01,827 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:01,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:02,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-19 08:01:02,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-11-19 08:01:02,089 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:02,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962960111] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:02,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:01:02,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 26 [2023-11-19 08:01:02,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257001265] [2023-11-19 08:01:02,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:02,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:02,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-19 08:01:02,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2023-11-19 08:01:02,157 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. cyclomatic complexity: 11 Second operand has 27 states, 26 states have (on average 2.0) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:02,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:02,487 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2023-11-19 08:01:02,487 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 45 transitions. [2023-11-19 08:01:02,488 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 08:01:02,488 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 37 states and 45 transitions. [2023-11-19 08:01:02,488 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2023-11-19 08:01:02,489 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2023-11-19 08:01:02,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 45 transitions. [2023-11-19 08:01:02,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:02,489 INFO L218 hiAutomatonCegarLoop]: Abstraction has 37 states and 45 transitions. [2023-11-19 08:01:02,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 45 transitions. [2023-11-19 08:01:02,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2023-11-19 08:01:02,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:02,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2023-11-19 08:01:02,492 INFO L240 hiAutomatonCegarLoop]: Abstraction has 27 states and 33 transitions. [2023-11-19 08:01:02,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 08:01:02,495 INFO L428 stractBuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2023-11-19 08:01:02,496 INFO L335 stractBuchiCegarLoop]: ======== Iteration 13 ============ [2023-11-19 08:01:02,497 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 33 transitions. [2023-11-19 08:01:02,497 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 08:01:02,497 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:01:02,497 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:01:02,499 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:02,500 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 08:01:02,500 INFO L748 eck$LassoCheckResult]: Stem: 1980#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 1981#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_#t~nondet205#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 1982#L367 assume !(main_~length~0#1 < 1); 1973#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1 % 18446744073709551616);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 1974#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 1975#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 1983#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 1995#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 1984#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 1985#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 1986#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 1988#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 1994#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 1993#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 1992#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 1990#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 1991#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 1989#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 1976#L370-4 main_~j~0#1 := 0; 1977#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 1978#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 1979#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 1987#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 1999#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 1998#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 1997#L378-2 [2023-11-19 08:01:02,501 INFO L750 eck$LassoCheckResult]: Loop: 1997#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 1996#L378 assume main_#t~mem210#1 > 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 1997#L378-2 [2023-11-19 08:01:02,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:02,501 INFO L85 PathProgramCache]: Analyzing trace with hash 893969701, now seen corresponding path program 6 times [2023-11-19 08:01:02,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:02,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802391851] [2023-11-19 08:01:02,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:02,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:02,530 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:02,558 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:02,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:02,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 12 times [2023-11-19 08:01:02,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:02,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847783375] [2023-11-19 08:01:02,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:02,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:02,566 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:02,570 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:02,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:02,572 INFO L85 PathProgramCache]: Analyzing trace with hash 111424808, now seen corresponding path program 6 times [2023-11-19 08:01:02,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:02,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284022215] [2023-11-19 08:01:02,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:02,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:02,987 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:02,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:02,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284022215] [2023-11-19 08:01:02,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284022215] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:02,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470343259] [2023-11-19 08:01:02,988 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-19 08:01:02,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:02,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:02,991 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:03,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-19 08:01:03,088 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-11-19 08:01:03,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:01:03,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 08:01:03,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:03,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-19 08:01:03,634 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-19 08:01:03,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2023-11-19 08:01:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:03,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:04,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-11-19 08:01:04,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2023-11-19 08:01:04,335 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:04,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470343259] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:04,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:01:04,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 33 [2023-11-19 08:01:04,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98146867] [2023-11-19 08:01:04,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:04,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:04,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-19 08:01:04,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 08:01:04,421 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. cyclomatic complexity: 8 Second operand has 34 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:06,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:06,790 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2023-11-19 08:01:06,790 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 47 transitions. [2023-11-19 08:01:06,791 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2023-11-19 08:01:06,791 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 40 states and 47 transitions. [2023-11-19 08:01:06,791 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2023-11-19 08:01:06,791 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2023-11-19 08:01:06,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 47 transitions. [2023-11-19 08:01:06,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:06,792 INFO L218 hiAutomatonCegarLoop]: Abstraction has 40 states and 47 transitions. [2023-11-19 08:01:06,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 47 transitions. [2023-11-19 08:01:06,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 21. [2023-11-19 08:01:06,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:06,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2023-11-19 08:01:06,794 INFO L240 hiAutomatonCegarLoop]: Abstraction has 21 states and 26 transitions. [2023-11-19 08:01:06,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-19 08:01:06,797 INFO L428 stractBuchiCegarLoop]: Abstraction has 21 states and 26 transitions. [2023-11-19 08:01:06,797 INFO L335 stractBuchiCegarLoop]: ======== Iteration 14 ============ [2023-11-19 08:01:06,797 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 26 transitions. [2023-11-19 08:01:06,797 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 08:01:06,797 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:01:06,797 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:01:06,798 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:06,798 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 08:01:06,798 INFO L748 eck$LassoCheckResult]: Stem: 2289#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 2290#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_#t~nondet205#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 2291#L367 assume !(main_~length~0#1 < 1); 2283#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1 % 18446744073709551616);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 2284#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 2285#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 2292#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 2303#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 2293#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 2294#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 2295#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 2296#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 2302#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 2301#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 2300#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);havoc main_#t~nondet208#1;call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 2298#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 2299#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 2297#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 2288#L370-4 main_~j~0#1 := 0; 2287#L378-2 [2023-11-19 08:01:06,798 INFO L750 eck$LassoCheckResult]: Loop: 2287#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 2286#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 2287#L378-2 [2023-11-19 08:01:06,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:06,799 INFO L85 PathProgramCache]: Analyzing trace with hash -49003114, now seen corresponding path program 2 times [2023-11-19 08:01:06,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:06,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660849675] [2023-11-19 08:01:06,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:06,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:06,811 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:06,821 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:06,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:06,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2310, now seen corresponding path program 1 times [2023-11-19 08:01:06,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:06,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965698849] [2023-11-19 08:01:06,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:06,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:06,827 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:06,830 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:06,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:06,831 INFO L85 PathProgramCache]: Analyzing trace with hash 152649051, now seen corresponding path program 7 times [2023-11-19 08:01:06,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:06,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664890815] [2023-11-19 08:01:06,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:06,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:06,846 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:06,858 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:07,669 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 08:01:07,669 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 08:01:07,669 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 08:01:07,669 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 08:01:07,669 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 08:01:07,669 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:07,669 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 08:01:07,669 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 08:01:07,669 INFO L133 ssoRankerPreferences]: Filename of dumped script: array13_alloca.i_Iteration14_Lasso [2023-11-19 08:01:07,669 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 08:01:07,670 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 08:01:07,672 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:07,674 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:07,677 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:07,679 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:07,681 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:07,684 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:07,686 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:07,688 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:07,692 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:07,880 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:07,884 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:08,097 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 08:01:08,097 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 08:01:08,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:08,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:08,101 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:08,109 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:08,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-19 08:01:08,119 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:08,120 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:01:08,120 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:08,120 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:08,120 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:08,120 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:01:08,120 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:01:08,122 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:01:08,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:08,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:08,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:08,135 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:08,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-19 08:01:08,137 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:08,148 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:08,148 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:01:08,148 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:08,148 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:08,148 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:08,148 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:01:08,149 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:01:08,150 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:01:08,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:08,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:08,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:08,163 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:08,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-19 08:01:08,164 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:08,174 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:08,174 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:01:08,174 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:08,175 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:08,175 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:08,175 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:01:08,175 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:01:08,176 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:01:08,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:08,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:08,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:08,190 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:08,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-19 08:01:08,192 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:08,201 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:08,202 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:01:08,202 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:08,202 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:08,202 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:08,202 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:01:08,202 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:01:08,204 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:01:08,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:08,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:08,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:08,217 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:08,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-19 08:01:08,219 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:08,229 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:08,229 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:01:08,229 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:08,229 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:08,229 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:08,230 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:01:08,230 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:01:08,231 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:01:08,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:08,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:08,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:08,244 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:08,250 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:08,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-19 08:01:08,263 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:08,263 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:01:08,263 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:08,263 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:08,264 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:08,265 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:01:08,265 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:01:08,281 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:01:08,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:08,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:08,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:08,308 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:08,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-19 08:01:08,311 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:08,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:08,323 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:01:08,324 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:08,324 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:08,324 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:08,324 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:01:08,325 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:01:08,341 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:01:08,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:08,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:08,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:08,369 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:08,374 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:08,386 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:08,387 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:08,387 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:08,387 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:08,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-19 08:01:08,389 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 08:01:08,389 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 08:01:08,399 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:01:08,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:08,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:08,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:08,415 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:08,422 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:08,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-19 08:01:08,433 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:08,433 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:08,433 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:08,433 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:08,437 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 08:01:08,437 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 08:01:08,449 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:01:08,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:08,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:08,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:08,467 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:08,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-19 08:01:08,469 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:08,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:08,479 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:08,479 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:08,479 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:08,480 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 08:01:08,480 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 08:01:08,484 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:01:08,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2023-11-19 08:01:08,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:08,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:08,499 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:08,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-19 08:01:08,500 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:08,510 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:08,510 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:08,510 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:08,510 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:08,513 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 08:01:08,513 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 08:01:08,522 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:01:08,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:08,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:08,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:08,535 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:08,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-19 08:01:08,540 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:08,554 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:08,554 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:08,554 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:08,554 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:08,557 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 08:01:08,557 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 08:01:08,573 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:01:08,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:08,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:08,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:08,600 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:08,606 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:08,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-11-19 08:01:08,618 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:08,618 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:08,618 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:08,619 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:08,620 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 08:01:08,621 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 08:01:08,624 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:01:08,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:08,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:08,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:08,638 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:08,646 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:08,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-11-19 08:01:08,657 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:08,657 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:08,657 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:08,657 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:08,662 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 08:01:08,663 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 08:01:08,675 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 08:01:08,694 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2023-11-19 08:01:08,694 INFO L444 ModelExtractionUtils]: 5 out of 19 variables were initially zero. Simplification set additionally 11 variables to zero. [2023-11-19 08:01:08,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:08,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:08,699 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:08,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-11-19 08:01:08,703 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 08:01:08,714 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2023-11-19 08:01:08,714 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 08:01:08,714 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~length~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~length~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2023-11-19 08:01:08,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2023-11-19 08:01:08,741 INFO L156 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2023-11-19 08:01:08,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:08,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:01:08,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:08,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:08,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:01:08,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:08,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:08,854 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 08:01:08,854 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 26 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:08,868 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 26 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23 states and 29 transitions. Complement of second has 4 states. [2023-11-19 08:01:08,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-19 08:01:08,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:08,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2023-11-19 08:01:08,870 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 19 letters. Loop has 2 letters. [2023-11-19 08:01:08,870 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:01:08,870 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 21 letters. Loop has 2 letters. [2023-11-19 08:01:08,870 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:01:08,870 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 19 letters. Loop has 4 letters. [2023-11-19 08:01:08,871 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:01:08,871 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 29 transitions. [2023-11-19 08:01:08,871 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 08:01:08,871 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2023-11-19 08:01:08,871 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-19 08:01:08,871 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-19 08:01:08,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-19 08:01:08,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:08,872 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 08:01:08,872 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 08:01:08,872 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 08:01:08,872 INFO L335 stractBuchiCegarLoop]: ======== Iteration 15 ============ [2023-11-19 08:01:08,872 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-19 08:01:08,872 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 08:01:08,872 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-19 08:01:08,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 08:01:08 BoogieIcfgContainer [2023-11-19 08:01:08,879 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-19 08:01:08,879 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:01:08,879 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:01:08,879 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:01:08,880 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:42" (3/4) ... [2023-11-19 08:01:08,882 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 08:01:08,883 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:01:08,884 INFO L158 Benchmark]: Toolchain (without parser) took 27473.05ms. Allocated memory was 117.4MB in the beginning and 218.1MB in the end (delta: 100.7MB). Free memory was 74.2MB in the beginning and 105.1MB in the end (delta: -30.9MB). Peak memory consumption was 71.8MB. Max. memory is 16.1GB. [2023-11-19 08:01:08,884 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 92.3MB. Free memory was 65.8MB in the beginning and 65.8MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:01:08,885 INFO L158 Benchmark]: CACSL2BoogieTranslator took 552.95ms. Allocated memory is still 117.4MB. Free memory was 74.2MB in the beginning and 89.9MB in the end (delta: -15.7MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. [2023-11-19 08:01:08,885 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.50ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 88.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:01:08,885 INFO L158 Benchmark]: Boogie Preprocessor took 56.30ms. Allocated memory is still 117.4MB. Free memory was 88.4MB in the beginning and 87.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:01:08,886 INFO L158 Benchmark]: RCFGBuilder took 340.48ms. Allocated memory is still 117.4MB. Free memory was 87.0MB in the beginning and 76.6MB in the end (delta: 10.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 08:01:08,886 INFO L158 Benchmark]: BuchiAutomizer took 26443.42ms. Allocated memory was 117.4MB in the beginning and 218.1MB in the end (delta: 100.7MB). Free memory was 76.5MB in the beginning and 105.1MB in the end (delta: -28.5MB). Peak memory consumption was 72.1MB. Max. memory is 16.1GB. [2023-11-19 08:01:08,886 INFO L158 Benchmark]: Witness Printer took 4.23ms. Allocated memory is still 218.1MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:01:08,888 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 92.3MB. Free memory was 65.8MB in the beginning and 65.8MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 552.95ms. Allocated memory is still 117.4MB. Free memory was 74.2MB in the beginning and 89.9MB in the end (delta: -15.7MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.50ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 88.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 56.30ms. Allocated memory is still 117.4MB. Free memory was 88.4MB in the beginning and 87.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 340.48ms. Allocated memory is still 117.4MB. Free memory was 87.0MB in the beginning and 76.6MB in the end (delta: 10.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 26443.42ms. Allocated memory was 117.4MB in the beginning and 218.1MB in the end (delta: 100.7MB). Free memory was 76.5MB in the beginning and 105.1MB in the end (delta: -28.5MB). Peak memory consumption was 72.1MB. Max. memory is 16.1GB. * Witness Printer took 4.23ms. Allocated memory is still 218.1MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[~arr~0!base] could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 14 terminating modules (12 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function null and consists of 5 locations. One deterministic module has affine ranking function ((-1 * j) + length) and consists of 3 locations. 12 modules have a trivial ranking function, the largest among these consists of 34 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 26.3s and 15 iterations. TraceHistogramMax:4. Analysis of lassos took 21.5s. Construction of modules took 1.7s. Büchi inclusion checks took 2.9s. Highest rank in rank-based complementation 3. Minimization of det autom 14. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 71 StatesRemovedByMinimization, 11 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 473 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 471 mSDsluCounter, 624 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 16 IncrementalHoareTripleChecker+Unchecked, 497 mSDsCounter, 112 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1844 IncrementalHoareTripleChecker+Invalid, 1972 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 112 mSolverCounterUnsat, 127 mSDtfsCounter, 1844 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc10 concLT0 SILN0 SILU2 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital129 mio100 ax100 hnf100 lsp96 ukn74 mio100 lsp54 div137 bol100 ite100 ukn100 eq156 hnf92 smp86 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 42ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-19 08:01:08,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:09,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-19 08:01:09,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-19 08:01:09,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-19 08:01:09,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:09,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:10,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-19 08:01:10,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:10,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-19 08:01:10,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-19 08:01:10,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-19 08:01:11,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:11,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406fbc72-caf3-4e72-8ec1-a609de9d4284/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE