./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/nec11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/nec11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b78564a93d1d434db2fa377a9b33de67cda5b233a427ae8d3550b20661e154a3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:27:17,073 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:27:17,137 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-28 20:27:17,141 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:27:17,142 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:27:17,166 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:27:17,167 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:27:17,167 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:27:17,168 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:27:17,169 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:27:17,169 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:27:17,170 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:27:17,170 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:27:17,171 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-28 20:27:17,171 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-28 20:27:17,172 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-28 20:27:17,172 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-28 20:27:17,173 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-28 20:27:17,173 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-28 20:27:17,174 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:27:17,174 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-28 20:27:17,175 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 20:27:17,176 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 20:27:17,176 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 20:27:17,176 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:27:17,177 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-28 20:27:17,177 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-28 20:27:17,178 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-28 20:27:17,178 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 20:27:17,178 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 20:27:17,179 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 20:27:17,179 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-28 20:27:17,180 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:27:17,180 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:27:17,180 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:27:17,181 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:27:17,181 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 20:27:17,182 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-28 20:27:17,182 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_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b78564a93d1d434db2fa377a9b33de67cda5b233a427ae8d3550b20661e154a3 [2023-11-28 20:27:17,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:27:17,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:27:17,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:27:17,409 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:27:17,410 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:27:17,411 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/loops/nec11.c [2023-11-28 20:27:20,174 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:27:20,335 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:27:20,335 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/sv-benchmarks/c/loops/nec11.c [2023-11-28 20:27:20,341 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/data/c33f4595c/be0035a768744d4cb75c8c9d47cc73fd/FLAGd8e4259ae [2023-11-28 20:27:20,354 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/data/c33f4595c/be0035a768744d4cb75c8c9d47cc73fd [2023-11-28 20:27:20,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:27:20,359 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:27:20,360 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:27:20,360 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:27:20,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:27:20,366 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:27:20" (1/1) ... [2023-11-28 20:27:20,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d62dc4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:27:20, skipping insertion in model container [2023-11-28 20:27:20,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:27:20" (1/1) ... [2023-11-28 20:27:20,387 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:27:20,524 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:27:20,534 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:27:20,547 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:27:20,558 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:27:20,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:27:20 WrapperNode [2023-11-28 20:27:20,559 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:27:20,560 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:27:20,560 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:27:20,560 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:27:20,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:27:20" (1/1) ... [2023-11-28 20:27:20,571 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:27:20" (1/1) ... [2023-11-28 20:27:20,585 INFO L138 Inliner]: procedures = 13, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 44 [2023-11-28 20:27:20,585 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:27:20,586 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:27:20,586 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:27:20,586 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:27:20,594 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:27:20" (1/1) ... [2023-11-28 20:27:20,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:27:20" (1/1) ... [2023-11-28 20:27:20,595 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:27:20" (1/1) ... [2023-11-28 20:27:20,605 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2023-11-28 20:27:20,606 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:27:20" (1/1) ... [2023-11-28 20:27:20,606 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:27:20" (1/1) ... [2023-11-28 20:27:20,609 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:27:20" (1/1) ... [2023-11-28 20:27:20,612 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:27:20" (1/1) ... [2023-11-28 20:27:20,613 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:27:20" (1/1) ... [2023-11-28 20:27:20,614 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:27:20" (1/1) ... [2023-11-28 20:27:20,615 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:27:20,616 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:27:20,617 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:27:20,617 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:27:20,618 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:27:20" (1/1) ... [2023-11-28 20:27:20,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-28 20:27:20,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:27:20,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-28 20:27:20,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-28 20:27:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 20:27:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:27:20,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:27:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 20:27:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 20:27:20,737 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:27:20,739 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:27:20,828 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:27:20,836 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:27:20,836 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-28 20:27:20,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:27:20 BoogieIcfgContainer [2023-11-28 20:27:20,838 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:27:20,839 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-28 20:27:20,839 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-28 20:27:20,842 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-28 20:27:20,843 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-28 20:27:20,843 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 08:27:20" (1/3) ... [2023-11-28 20:27:20,844 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@40b5dd45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:27:20, skipping insertion in model container [2023-11-28 20:27:20,844 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-28 20:27:20,844 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:27:20" (2/3) ... [2023-11-28 20:27:20,845 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@40b5dd45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:27:20, skipping insertion in model container [2023-11-28 20:27:20,845 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-28 20:27:20,845 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:27:20" (3/3) ... [2023-11-28 20:27:20,846 INFO L332 chiAutomizerObserver]: Analyzing ICFG nec11.c [2023-11-28 20:27:20,891 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-28 20:27:20,891 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-28 20:27:20,891 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-28 20:27:20,891 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-28 20:27:20,891 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-28 20:27:20,891 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-28 20:27:20,891 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-28 20:27:20,892 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-28 20:27:20,895 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 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) [2023-11-28 20:27:20,908 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-28 20:27:20,908 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-28 20:27:20,908 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-28 20:27:20,912 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-28 20:27:20,912 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-28 20:27:20,912 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-28 20:27:20,913 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 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) [2023-11-28 20:27:20,914 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-28 20:27:20,914 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-28 20:27:20,914 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-28 20:27:20,915 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-28 20:27:20,915 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-28 20:27:20,920 INFO L748 eck$LassoCheckResult]: Stem: 11#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(8, 2);call write~init~int#1(110, 2, 0, 1);call write~init~int#1(101, 2, 1, 1);call write~init~int#1(99, 2, 2, 1);call write~init~int#1(49, 2, 3, 1);call write~init~int#1(49, 2, 4, 1);call write~init~int#1(46, 2, 5, 1);call write~init~int#1(99, 2, 6, 1);call write~init~int#1(0, 2, 7, 1);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~post5#1, main_~a~0#1, main_~len~0#1, main_~c~0#1, main_~i~0#1;havoc main_~a~0#1;main_~len~0#1 := 0;havoc main_#t~nondet4#1;main_~c~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~i~0#1; 13#L21-2true [2023-11-28 20:27:20,920 INFO L750 eck$LassoCheckResult]: Loop: 13#L21-2true assume !!(0 != main_~c~0#1 % 256); 12#L23true assume !(4 == main_~len~0#1); 9#L23-2true assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 13#L21-2true [2023-11-28 20:27:20,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:27:20,925 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-28 20:27:20,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:27:20,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271443224] [2023-11-28 20:27:20,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:27:20,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:27:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:27:21,024 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-28 20:27:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:27:21,051 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-28 20:27:21,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:27:21,054 INFO L85 PathProgramCache]: Analyzing trace with hash 40876, now seen corresponding path program 1 times [2023-11-28 20:27:21,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:27:21,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139985998] [2023-11-28 20:27:21,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:27:21,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:27:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:27:21,079 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-28 20:27:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:27:21,088 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-28 20:27:21,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:27:21,089 INFO L85 PathProgramCache]: Analyzing trace with hash 28699818, now seen corresponding path program 1 times [2023-11-28 20:27:21,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:27:21,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190600857] [2023-11-28 20:27:21,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:27:21,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:27:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:27:21,107 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-28 20:27:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:27:21,122 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-28 20:27:21,436 INFO L210 LassoAnalysis]: Preferences: [2023-11-28 20:27:21,437 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-28 20:27:21,437 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-28 20:27:21,437 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-28 20:27:21,437 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-28 20:27:21,437 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-28 20:27:21,438 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-28 20:27:21,438 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-28 20:27:21,438 INFO L133 ssoRankerPreferences]: Filename of dumped script: nec11.c_Iteration1_Lasso [2023-11-28 20:27:21,438 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-28 20:27:21,438 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-28 20:27:21,452 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-28 20:27:21,460 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-28 20:27:21,478 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-28 20:27:21,480 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-28 20:27:21,495 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-28 20:27:21,582 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-28 20:27:21,586 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-28 20:27:21,603 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-28 20:27:21,633 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-28 20:27:21,635 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-28 20:27:21,640 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-28 20:27:21,971 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-28 20:27:21,976 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-28 20:27:21,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-28 20:27:21,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:27:21,980 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-28 20:27:21,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-28 20:27:21,987 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-28 20:27:22,000 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-28 20:27:22,000 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-28 20:27:22,001 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-28 20:27:22,001 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-28 20:27:22,001 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-28 20:27:22,003 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-28 20:27:22,003 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-28 20:27:22,006 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-28 20:27:22,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-28 20:27:22,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-28 20:27:22,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:27:22,012 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-28 20:27:22,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-28 20:27:22,016 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 [2023-11-28 20:27:22,029 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-28 20:27:22,029 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-28 20:27:22,029 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-28 20:27:22,029 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-28 20:27:22,033 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-28 20:27:22,034 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-28 20:27:22,039 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-28 20:27:22,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-11-28 20:27:22,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-28 20:27:22,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:27:22,045 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-28 20:27:22,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-28 20:27:22,049 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 [2023-11-28 20:27:22,065 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-28 20:27:22,065 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-28 20:27:22,065 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-28 20:27:22,065 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-28 20:27:22,068 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-28 20:27:22,069 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-28 20:27:22,073 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-28 20:27:22,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-11-28 20:27:22,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-28 20:27:22,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:27:22,078 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-28 20:27:22,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-28 20:27:22,082 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 [2023-11-28 20:27:22,094 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-28 20:27:22,094 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-28 20:27:22,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-28 20:27:22,095 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-28 20:27:22,095 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-28 20:27:22,095 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-28 20:27:22,096 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-28 20:27:22,097 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-28 20:27:22,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-11-28 20:27:22,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-28 20:27:22,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:27:22,103 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-28 20:27:22,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-28 20:27:22,108 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 [2023-11-28 20:27:22,119 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-28 20:27:22,120 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-28 20:27:22,120 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-11-28 20:27:22,120 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-28 20:27:22,140 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2023-11-28 20:27:22,141 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2023-11-28 20:27:22,164 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-28 20:27:22,230 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2023-11-28 20:27:22,230 INFO L444 ModelExtractionUtils]: 2 out of 11 variables were initially zero. Simplification set additionally 4 variables to zero. [2023-11-28 20:27:22,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-28 20:27:22,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:27:22,257 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-28 20:27:22,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-28 20:27:22,259 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-28 20:27:22,275 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2023-11-28 20:27:22,275 INFO L513 LassoAnalysis]: Proved termination. [2023-11-28 20:27:22,276 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~len~0#1) = -2*ULTIMATE.start_main_~len~0#1 + 9 Supporting invariants [-1*ULTIMATE.start_main_~len~0#1 + 4 >= 0] [2023-11-28 20:27:22,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-11-28 20:27:22,288 INFO L156 tatePredicateManager]: 1 out of 2 supporting invariants were superfluous and have been removed [2023-11-28 20:27:22,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:27:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:27:22,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:27:22,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:27:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:27:22,361 WARN L260 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:27:22,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:27:22,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:27:22,427 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 [2023-11-28 20:27:22,429 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2023-11-28 20:27:22,500 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 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). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 37 states and 48 transitions. Complement of second has 8 states. [2023-11-28 20:27:22,502 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 [2023-11-28 20:27:22,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2023-11-28 20:27:22,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2023-11-28 20:27:22,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 3 letters. [2023-11-28 20:27:22,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-28 20:27:22,510 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 5 letters. Loop has 3 letters. [2023-11-28 20:27:22,510 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-28 20:27:22,510 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 6 letters. [2023-11-28 20:27:22,510 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-28 20:27:22,511 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 48 transitions. [2023-11-28 20:27:22,514 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-28 20:27:22,518 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 10 states and 13 transitions. [2023-11-28 20:27:22,519 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-11-28 20:27:22,519 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2023-11-28 20:27:22,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2023-11-28 20:27:22,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-28 20:27:22,520 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2023-11-28 20:27:22,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2023-11-28 20:27:22,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-11-28 20:27:22,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:22,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2023-11-28 20:27:22,545 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2023-11-28 20:27:22,545 INFO L428 stractBuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2023-11-28 20:27:22,545 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-28 20:27:22,545 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2023-11-28 20:27:22,546 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-28 20:27:22,546 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-28 20:27:22,546 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-28 20:27:22,546 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-28 20:27:22,546 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-28 20:27:22,547 INFO L748 eck$LassoCheckResult]: Stem: 111#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(8, 2);call write~init~int#1(110, 2, 0, 1);call write~init~int#1(101, 2, 1, 1);call write~init~int#1(99, 2, 2, 1);call write~init~int#1(49, 2, 3, 1);call write~init~int#1(49, 2, 4, 1);call write~init~int#1(46, 2, 5, 1);call write~init~int#1(99, 2, 6, 1);call write~init~int#1(0, 2, 7, 1);call #Ultimate.allocInit(12, 3); 112#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~post5#1, main_~a~0#1, main_~len~0#1, main_~c~0#1, main_~i~0#1;havoc main_~a~0#1;main_~len~0#1 := 0;havoc main_#t~nondet4#1;main_~c~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~i~0#1; 113#L21-2 assume !!(0 != main_~c~0#1 % 256); 109#L23 assume 4 == main_~len~0#1;main_~len~0#1 := 0; 105#L23-2 [2023-11-28 20:27:22,547 INFO L750 eck$LassoCheckResult]: Loop: 105#L23-2 assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 106#L21-2 assume !!(0 != main_~c~0#1 % 256); 114#L23 assume !(4 == main_~len~0#1); 105#L23-2 [2023-11-28 20:27:22,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:27:22,547 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-11-28 20:27:22,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:27:22,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142637852] [2023-11-28 20:27:22,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:27:22,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:27:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:27:22,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:27:22,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:27:22,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142637852] [2023-11-28 20:27:22,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142637852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:27:22,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:27:22,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:27:22,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467624838] [2023-11-28 20:27:22,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:27:22,614 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-28 20:27:22,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:27:22,615 INFO L85 PathProgramCache]: Analyzing trace with hash 47446, now seen corresponding path program 2 times [2023-11-28 20:27:22,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:27:22,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973871424] [2023-11-28 20:27:22,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:27:22,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:27:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:27:22,622 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-28 20:27:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:27:22,627 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-28 20:27:22,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:27:22,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:27:22,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:27:22,668 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:22,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:27:22,678 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2023-11-28 20:27:22,678 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 16 transitions. [2023-11-28 20:27:22,679 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-28 20:27:22,679 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 15 transitions. [2023-11-28 20:27:22,680 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-11-28 20:27:22,680 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-11-28 20:27:22,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 15 transitions. [2023-11-28 20:27:22,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-28 20:27:22,680 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-11-28 20:27:22,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 15 transitions. [2023-11-28 20:27:22,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2023-11-28 20:27:22,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:22,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-11-28 20:27:22,682 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-11-28 20:27:22,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:27:22,683 INFO L428 stractBuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-11-28 20:27:22,683 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-28 20:27:22,683 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2023-11-28 20:27:22,684 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-28 20:27:22,684 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-28 20:27:22,684 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-28 20:27:22,684 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2023-11-28 20:27:22,684 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-28 20:27:22,685 INFO L748 eck$LassoCheckResult]: Stem: 141#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(8, 2);call write~init~int#1(110, 2, 0, 1);call write~init~int#1(101, 2, 1, 1);call write~init~int#1(99, 2, 2, 1);call write~init~int#1(49, 2, 3, 1);call write~init~int#1(49, 2, 4, 1);call write~init~int#1(46, 2, 5, 1);call write~init~int#1(99, 2, 6, 1);call write~init~int#1(0, 2, 7, 1);call #Ultimate.allocInit(12, 3); 142#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~post5#1, main_~a~0#1, main_~len~0#1, main_~c~0#1, main_~i~0#1;havoc main_~a~0#1;main_~len~0#1 := 0;havoc main_#t~nondet4#1;main_~c~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~i~0#1; 143#L21-2 assume !!(0 != main_~c~0#1 % 256); 140#L23 assume !(4 == main_~len~0#1); 137#L23-2 assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 138#L21-2 assume !!(0 != main_~c~0#1 % 256); 139#L23 assume 4 == main_~len~0#1;main_~len~0#1 := 0; 135#L23-2 [2023-11-28 20:27:22,685 INFO L750 eck$LassoCheckResult]: Loop: 135#L23-2 assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 136#L21-2 assume !!(0 != main_~c~0#1 % 256); 144#L23 assume !(4 == main_~len~0#1); 135#L23-2 [2023-11-28 20:27:22,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:27:22,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1810721677, now seen corresponding path program 1 times [2023-11-28 20:27:22,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:27:22,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202611662] [2023-11-28 20:27:22,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:27:22,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:27:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:27:22,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:27:22,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:27:22,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202611662] [2023-11-28 20:27:22,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202611662] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:27:22,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42373187] [2023-11-28 20:27:22,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:27:22,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:27:22,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:27:22,747 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:27:22,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 20:27:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:27:22,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:27:22,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:27:22,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:27:22,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:27:22,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:27:22,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42373187] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:27:22,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:27:22,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-28 20:27:22,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588449194] [2023-11-28 20:27:22,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:27:22,844 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-28 20:27:22,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:27:22,845 INFO L85 PathProgramCache]: Analyzing trace with hash 47446, now seen corresponding path program 3 times [2023-11-28 20:27:22,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:27:22,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741270568] [2023-11-28 20:27:22,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:27:22,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:27:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:27:22,851 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-28 20:27:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:27:22,856 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-28 20:27:22,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:27:22,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:27:22,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:27:22,892 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. cyclomatic complexity: 4 Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 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) [2023-11-28 20:27:22,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:27:22,914 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2023-11-28 20:27:22,914 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 36 transitions. [2023-11-28 20:27:22,915 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2023-11-28 20:27:22,916 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 31 states and 33 transitions. [2023-11-28 20:27:22,916 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-11-28 20:27:22,916 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2023-11-28 20:27:22,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 33 transitions. [2023-11-28 20:27:22,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-28 20:27:22,917 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31 states and 33 transitions. [2023-11-28 20:27:22,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 33 transitions. [2023-11-28 20:27:22,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2023-11-28 20:27:22,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:22,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2023-11-28 20:27:22,920 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 30 transitions. [2023-11-28 20:27:22,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:27:22,921 INFO L428 stractBuchiCegarLoop]: Abstraction has 28 states and 30 transitions. [2023-11-28 20:27:22,922 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-28 20:27:22,922 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 30 transitions. [2023-11-28 20:27:22,923 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2023-11-28 20:27:22,923 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-28 20:27:22,923 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-28 20:27:22,924 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 1, 1, 1] [2023-11-28 20:27:22,924 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 4, 3, 1] [2023-11-28 20:27:22,924 INFO L748 eck$LassoCheckResult]: Stem: 231#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(8, 2);call write~init~int#1(110, 2, 0, 1);call write~init~int#1(101, 2, 1, 1);call write~init~int#1(99, 2, 2, 1);call write~init~int#1(49, 2, 3, 1);call write~init~int#1(49, 2, 4, 1);call write~init~int#1(46, 2, 5, 1);call write~init~int#1(99, 2, 6, 1);call write~init~int#1(0, 2, 7, 1);call #Ultimate.allocInit(12, 3); 232#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~post5#1, main_~a~0#1, main_~len~0#1, main_~c~0#1, main_~i~0#1;havoc main_~a~0#1;main_~len~0#1 := 0;havoc main_#t~nondet4#1;main_~c~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~i~0#1; 233#L21-2 assume !!(0 != main_~c~0#1 % 256); 230#L23 assume !(4 == main_~len~0#1); 227#L23-2 assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 228#L21-2 assume !!(0 != main_~c~0#1 % 256); 234#L23 assume !(4 == main_~len~0#1); 252#L23-2 assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 251#L21-2 assume !!(0 != main_~c~0#1 % 256); 250#L23 assume !(4 == main_~len~0#1); 249#L23-2 assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 248#L21-2 assume !!(0 != main_~c~0#1 % 256); 240#L23 assume !(4 == main_~len~0#1); 242#L23-2 assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 239#L21-2 assume !!(0 != main_~c~0#1 % 256); 229#L23 assume 4 == main_~len~0#1;main_~len~0#1 := 0; 225#L23-2 [2023-11-28 20:27:22,924 INFO L750 eck$LassoCheckResult]: Loop: 225#L23-2 assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 226#L21-2 assume !!(0 != main_~c~0#1 % 256); 235#L23 assume !(4 == main_~len~0#1); 236#L23-2 assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 247#L21-2 assume !!(0 != main_~c~0#1 % 256); 246#L23 assume !(4 == main_~len~0#1); 245#L23-2 assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 244#L21-2 assume !!(0 != main_~c~0#1 % 256); 243#L23 assume !(4 == main_~len~0#1); 238#L23-2 assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 241#L21-2 assume !!(0 != main_~c~0#1 % 256); 237#L23 assume 4 == main_~len~0#1;main_~len~0#1 := 0; 225#L23-2 [2023-11-28 20:27:22,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:27:22,924 INFO L85 PathProgramCache]: Analyzing trace with hash 658202022, now seen corresponding path program 2 times [2023-11-28 20:27:22,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:27:22,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405530178] [2023-11-28 20:27:22,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:27:22,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:27:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:27:22,942 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-28 20:27:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:27:22,960 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-28 20:27:22,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:27:22,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1957011391, now seen corresponding path program 1 times [2023-11-28 20:27:22,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:27:22,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862201600] [2023-11-28 20:27:22,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:27:22,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:27:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:27:22,974 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-28 20:27:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:27:22,985 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-28 20:27:22,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:27:22,986 INFO L85 PathProgramCache]: Analyzing trace with hash -282022428, now seen corresponding path program 3 times [2023-11-28 20:27:22,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:27:22,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805083835] [2023-11-28 20:27:22,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:27:22,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:27:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:27:23,015 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-28 20:27:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:27:23,040 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-28 20:27:23,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-11-28 20:27:23,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2023-11-28 20:27:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:27:23,616 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-28 20:27:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:27:23,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 08:27:23 BoogieIcfgContainer [2023-11-28 20:27:23,657 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-28 20:27:23,657 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-28 20:27:23,657 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-28 20:27:23,657 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-28 20:27:23,658 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:27:20" (3/4) ... [2023-11-28 20:27:23,659 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-28 20:27:23,699 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-28 20:27:23,699 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-28 20:27:23,700 INFO L158 Benchmark]: Toolchain (without parser) took 3340.75ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 116.0MB in the beginning and 112.4MB in the end (delta: 3.6MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. [2023-11-28 20:27:23,700 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory is still 52.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 20:27:23,701 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.08ms. Allocated memory is still 151.0MB. Free memory was 115.6MB in the beginning and 105.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-28 20:27:23,701 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.53ms. Allocated memory is still 151.0MB. Free memory was 105.6MB in the beginning and 104.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 20:27:23,701 INFO L158 Benchmark]: Boogie Preprocessor took 29.78ms. Allocated memory is still 151.0MB. Free memory was 104.3MB in the beginning and 102.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 20:27:23,702 INFO L158 Benchmark]: RCFGBuilder took 221.87ms. Allocated memory is still 151.0MB. Free memory was 102.2MB in the beginning and 93.0MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-28 20:27:23,702 INFO L158 Benchmark]: BuchiAutomizer took 2817.42ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 93.0MB in the beginning and 114.5MB in the end (delta: -21.6MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2023-11-28 20:27:23,703 INFO L158 Benchmark]: Witness Printer took 42.22ms. Allocated memory is still 182.5MB. Free memory was 114.5MB in the beginning and 112.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 20:27:23,705 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory is still 52.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 199.08ms. Allocated memory is still 151.0MB. Free memory was 115.6MB in the beginning and 105.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.53ms. Allocated memory is still 151.0MB. Free memory was 105.6MB in the beginning and 104.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.78ms. Allocated memory is still 151.0MB. Free memory was 104.3MB in the beginning and 102.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 221.87ms. Allocated memory is still 151.0MB. Free memory was 102.2MB in the beginning and 93.0MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 2817.42ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 93.0MB in the beginning and 114.5MB in the end (delta: -21.6MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. * Witness Printer took 42.22ms. Allocated memory is still 182.5MB. Free memory was 114.5MB in the beginning and 112.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (2 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function (9 + (-2 * len)) and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 7 locations. The remainder module has 28 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 4 iterations. TraceHistogramMax:5. Analysis of lassos took 2.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 16 mSDtfsCounter, 25 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU2 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital139 mio100 ax100 hnf100 lsp41 ukn44 mio100 lsp69 div305 bol100 ite100 ukn100 eq154 hnf96 smp56 dnf165 smp100 tf100 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 173ms VariablesStem: 1 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 21]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L15] int a[5]; [L16] int len=0; [L17] _Bool c=__VERIFIER_nondet_bool(); [L18] int i; VAL [len=0] [L21] COND TRUE \read(c) VAL [c=255, len=0] [L23] COND FALSE !(len==4) VAL [c=255, len=0] [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ VAL [c=255, len=1] [L21] COND TRUE \read(c) VAL [c=255, len=1] [L23] COND FALSE !(len==4) VAL [c=255, len=1] [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ VAL [c=255, len=2] [L21] COND TRUE \read(c) VAL [c=255, len=2] [L23] COND FALSE !(len==4) VAL [c=255, len=2] [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ VAL [c=255, len=3] [L21] COND TRUE \read(c) VAL [c=255, len=3] [L23] COND FALSE !(len==4) VAL [c=255, len=3] [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ VAL [c=255, len=4] [L21] COND TRUE \read(c) VAL [c=255, len=4] [L23] COND TRUE len==4 [L24] len =0 VAL [c=255, len=0] Loop: [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND TRUE len==4 [L24] len =0 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 21]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int a[5]; [L16] int len=0; [L17] _Bool c=__VERIFIER_nondet_bool(); [L18] int i; VAL [len=0] [L21] COND TRUE \read(c) VAL [c=255, len=0] [L23] COND FALSE !(len==4) VAL [c=255, len=0] [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ VAL [c=255, len=1] [L21] COND TRUE \read(c) VAL [c=255, len=1] [L23] COND FALSE !(len==4) VAL [c=255, len=1] [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ VAL [c=255, len=2] [L21] COND TRUE \read(c) VAL [c=255, len=2] [L23] COND FALSE !(len==4) VAL [c=255, len=2] [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ VAL [c=255, len=3] [L21] COND TRUE \read(c) VAL [c=255, len=3] [L23] COND FALSE !(len==4) VAL [c=255, len=3] [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ VAL [c=255, len=4] [L21] COND TRUE \read(c) VAL [c=255, len=4] [L23] COND TRUE len==4 [L24] len =0 VAL [c=255, len=0] Loop: [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND TRUE len==4 [L24] len =0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-28 20:27:23,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-28 20:27:23,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_824af333-55f1-4a12-8a5b-fb856b867397/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)