./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB --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 c0f4ea6e3bcbb2b79339dce82d9fa934022810e04d651b4bbb6fb3904b8f8c98 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:16:18,466 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:16:18,569 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-28 03:16:18,575 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:16:18,576 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:16:18,624 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:16:18,625 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:16:18,626 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:16:18,626 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:16:18,627 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:16:18,628 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:16:18,628 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:16:18,628 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:16:18,629 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-28 03:16:18,629 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-28 03:16:18,630 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-28 03:16:18,631 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-28 03:16:18,631 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-28 03:16:18,631 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-28 03:16:18,631 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:16:18,631 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-28 03:16:18,631 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:16:18,632 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:16:18,632 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:16:18,632 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:16:18,632 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-28 03:16:18,632 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-28 03:16:18,632 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-28 03:16:18,632 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:16:18,632 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:16:18,632 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:16:18,632 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-28 03:16:18,633 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:16:18,633 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:16:18,633 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:16:18,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:16:18,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:16:18,633 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2024-11-28 03:16:18,635 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-28 03:16:18,635 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB 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 -> c0f4ea6e3bcbb2b79339dce82d9fa934022810e04d651b4bbb6fb3904b8f8c98 [2024-11-28 03:16:19,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:16:19,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:16:19,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:16:19,047 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:16:19,047 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:16:19,049 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/locks/test_locks_6.c [2024-11-28 03:16:22,835 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/data/0b39a8252/db84c820afef4fb18c0525baef18e0b4/FLAGd299399af [2024-11-28 03:16:23,215 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:16:23,218 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/sv-benchmarks/c/locks/test_locks_6.c [2024-11-28 03:16:23,228 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/data/0b39a8252/db84c820afef4fb18c0525baef18e0b4/FLAGd299399af [2024-11-28 03:16:23,439 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/data/0b39a8252/db84c820afef4fb18c0525baef18e0b4 [2024-11-28 03:16:23,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:16:23,446 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:16:23,449 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:16:23,449 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:16:23,455 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:16:23,456 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:23" (1/1) ... [2024-11-28 03:16:23,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c87bb6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:23, skipping insertion in model container [2024-11-28 03:16:23,457 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:23" (1/1) ... [2024-11-28 03:16:23,476 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:16:23,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:16:23,682 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:16:23,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:16:23,723 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:16:23,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:23 WrapperNode [2024-11-28 03:16:23,724 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:16:23,725 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:16:23,726 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:16:23,726 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:16:23,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:23" (1/1) ... [2024-11-28 03:16:23,741 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:23" (1/1) ... [2024-11-28 03:16:23,762 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2024-11-28 03:16:23,763 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:16:23,763 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:16:23,764 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:16:23,764 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:16:23,775 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:23" (1/1) ... [2024-11-28 03:16:23,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:23" (1/1) ... [2024-11-28 03:16:23,776 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:23" (1/1) ... [2024-11-28 03:16:23,789 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 03:16:23,789 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:23" (1/1) ... [2024-11-28 03:16:23,790 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:23" (1/1) ... [2024-11-28 03:16:23,793 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:23" (1/1) ... [2024-11-28 03:16:23,794 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:23" (1/1) ... [2024-11-28 03:16:23,799 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:23" (1/1) ... [2024-11-28 03:16:23,800 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:23" (1/1) ... [2024-11-28 03:16:23,801 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:23" (1/1) ... [2024-11-28 03:16:23,803 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:16:23,804 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:16:23,804 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:16:23,805 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:16:23,806 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:23" (1/1) ... [2024-11-28 03:16:23,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 03:16:23,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:16:23,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 03:16:23,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-28 03:16:23,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:16:23,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:16:23,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:16:23,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:16:23,972 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:16:23,975 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:16:24,232 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-28 03:16:24,232 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:16:24,245 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:16:24,245 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:16:24,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:24 BoogieIcfgContainer [2024-11-28 03:16:24,246 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:16:24,247 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-28 03:16:24,247 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-28 03:16:24,255 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-28 03:16:24,256 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 03:16:24,256 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:16:23" (1/3) ... [2024-11-28 03:16:24,257 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2cc8544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:16:24, skipping insertion in model container [2024-11-28 03:16:24,258 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 03:16:24,258 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:23" (2/3) ... [2024-11-28 03:16:24,258 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2cc8544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:16:24, skipping insertion in model container [2024-11-28 03:16:24,258 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 03:16:24,258 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:24" (3/3) ... [2024-11-28 03:16:24,263 INFO L363 chiAutomizerObserver]: Analyzing ICFG test_locks_6.c [2024-11-28 03:16:24,345 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-28 03:16:24,346 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-28 03:16:24,346 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-28 03:16:24,347 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-28 03:16:24,347 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-28 03:16:24,348 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-28 03:16:24,348 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-28 03:16:24,349 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-28 03:16:24,359 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 28 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:24,380 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2024-11-28 03:16:24,381 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 03:16:24,381 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 03:16:24,388 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 03:16:24,388 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:24,389 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-28 03:16:24,389 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 28 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:24,391 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2024-11-28 03:16:24,391 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 03:16:24,391 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 03:16:24,392 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 03:16:24,392 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:24,401 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_~cond~0#1;" [2024-11-28 03:16:24,402 INFO L749 eck$LassoCheckResult]: Loop: "havoc main_#t~nondet10#1;main_~cond~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;" "assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;" "assume 0 != main_~p1~0#1;main_~lk1~0#1 := 1;" "assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1;" "assume !(0 != main_~p3~0#1);" "assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1;" "assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1;" "assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" [2024-11-28 03:16:24,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:24,408 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-28 03:16:24,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:16:24,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513555016] [2024-11-28 03:16:24,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:24,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:16:24,524 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:16:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:16:24,565 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:16:24,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:24,570 INFO L85 PathProgramCache]: Analyzing trace with hash -11500681, now seen corresponding path program 1 times [2024-11-28 03:16:24,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:16:24,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918298722] [2024-11-28 03:16:24,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:24,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:24,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-28 03:16:24,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918298722] [2024-11-28 03:16:24,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918298722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:16:24,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071810992] [2024-11-28 03:16:24,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:24,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:24,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:16:24,701 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:16:24,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:16:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:24,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:16:24,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:16:24,846 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:16:24,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071810992] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:16:24,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:16:24,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-28 03:16:24,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133760494] [2024-11-28 03:16:24,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:16:24,895 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-28 03:16:24,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-28 03:16:24,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:16:24,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:16:24,938 INFO L87 Difference]: Start difference. First operand has 28 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 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 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:24,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:24,990 INFO L93 Difference]: Finished difference Result 49 states and 81 transitions. [2024-11-28 03:16:24,991 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 81 transitions. [2024-11-28 03:16:24,994 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 39 [2024-11-28 03:16:25,001 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 41 states and 63 transitions. [2024-11-28 03:16:25,003 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2024-11-28 03:16:25,003 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2024-11-28 03:16:25,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 63 transitions. [2024-11-28 03:16:25,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-28 03:16:25,005 INFO L218 hiAutomatonCegarLoop]: Abstraction has 41 states and 63 transitions. [2024-11-28 03:16:25,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 63 transitions. [2024-11-28 03:16:25,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-28 03:16:25,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 40 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:25,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 63 transitions. [2024-11-28 03:16:25,039 INFO L240 hiAutomatonCegarLoop]: Abstraction has 41 states and 63 transitions. [2024-11-28 03:16:25,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:16:25,045 INFO L425 stractBuchiCegarLoop]: Abstraction has 41 states and 63 transitions. [2024-11-28 03:16:25,045 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-28 03:16:25,046 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 63 transitions. [2024-11-28 03:16:25,047 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 39 [2024-11-28 03:16:25,047 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 03:16:25,047 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 03:16:25,048 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 03:16:25,048 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:25,048 INFO L747 eck$LassoCheckResult]: Stem: "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(15, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_~cond~0#1;" [2024-11-28 03:16:25,048 INFO L749 eck$LassoCheckResult]: Loop: "havoc main_#t~nondet10#1;main_~cond~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;" "assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;" "assume !(0 != main_~p1~0#1);" "assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1;" "assume !(0 != main_~p3~0#1);" "assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1;" "assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1;" "assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" [2024-11-28 03:16:25,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:25,049 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-11-28 03:16:25,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:16:25,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415048121] [2024-11-28 03:16:25,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:25,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:16:25,058 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:16:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:16:25,067 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:16:25,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:25,068 INFO L85 PathProgramCache]: Analyzing trace with hash 246664757, now seen corresponding path program 1 times [2024-11-28 03:16:25,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:16:25,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195078558] [2024-11-28 03:16:25,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:25,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:25,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-28 03:16:25,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195078558] [2024-11-28 03:16:25,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195078558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:16:25,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991122247] [2024-11-28 03:16:25,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:25,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:25,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:16:25,122 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:16:25,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:16:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:25,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:16:25,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:16:25,223 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:16:25,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991122247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:16:25,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:16:25,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-28 03:16:25,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641359] [2024-11-28 03:16:25,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:16:25,263 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-28 03:16:25,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-28 03:16:25,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:16:25,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:16:25,265 INFO L87 Difference]: Start difference. First operand 41 states and 63 transitions. cyclomatic complexity: 24 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:25,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:25,289 INFO L93 Difference]: Finished difference Result 78 states and 118 transitions. [2024-11-28 03:16:25,289 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 118 transitions. [2024-11-28 03:16:25,292 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 76 [2024-11-28 03:16:25,294 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 78 states and 118 transitions. [2024-11-28 03:16:25,294 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 78 [2024-11-28 03:16:25,294 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 78 [2024-11-28 03:16:25,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 118 transitions. [2024-11-28 03:16:25,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-28 03:16:25,295 INFO L218 hiAutomatonCegarLoop]: Abstraction has 78 states and 118 transitions. [2024-11-28 03:16:25,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 118 transitions. [2024-11-28 03:16:25,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-28 03:16:25,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 78 states have (on average 1.5128205128205128) internal successors, (118), 77 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:25,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 118 transitions. [2024-11-28 03:16:25,304 INFO L240 hiAutomatonCegarLoop]: Abstraction has 78 states and 118 transitions. [2024-11-28 03:16:25,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:16:25,305 INFO L425 stractBuchiCegarLoop]: Abstraction has 78 states and 118 transitions. [2024-11-28 03:16:25,306 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-28 03:16:25,306 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 78 states and 118 transitions. [2024-11-28 03:16:25,307 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 76 [2024-11-28 03:16:25,308 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 03:16:25,308 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 03:16:25,308 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 03:16:25,308 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:25,311 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_~cond~0#1;" [2024-11-28 03:16:25,311 INFO L749 eck$LassoCheckResult]: Loop: "havoc main_#t~nondet10#1;main_~cond~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;" "assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1;" "assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1;" "assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" [2024-11-28 03:16:25,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:25,312 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2024-11-28 03:16:25,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:16:25,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564210530] [2024-11-28 03:16:25,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:25,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:16:25,331 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:16:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:16:25,344 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:16:25,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:25,345 INFO L85 PathProgramCache]: Analyzing trace with hash 947729335, now seen corresponding path program 1 times [2024-11-28 03:16:25,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:16:25,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669646133] [2024-11-28 03:16:25,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:25,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:25,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-28 03:16:25,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669646133] [2024-11-28 03:16:25,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669646133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:16:25,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216395187] [2024-11-28 03:16:25,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:25,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:25,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:16:25,403 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:16:25,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:16:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:25,459 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:16:25,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:16:25,483 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:16:25,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216395187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:16:25,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:16:25,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-28 03:16:25,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292272965] [2024-11-28 03:16:25,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:16:25,507 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-28 03:16:25,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-28 03:16:25,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:16:25,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:16:25,508 INFO L87 Difference]: Start difference. First operand 78 states and 118 transitions. cyclomatic complexity: 44 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:25,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:25,533 INFO L93 Difference]: Finished difference Result 150 states and 222 transitions. [2024-11-28 03:16:25,533 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 150 states and 222 transitions. [2024-11-28 03:16:25,540 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 148 [2024-11-28 03:16:25,545 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 150 states to 150 states and 222 transitions. [2024-11-28 03:16:25,546 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 150 [2024-11-28 03:16:25,546 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 150 [2024-11-28 03:16:25,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 150 states and 222 transitions. [2024-11-28 03:16:25,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-28 03:16:25,550 INFO L218 hiAutomatonCegarLoop]: Abstraction has 150 states and 222 transitions. [2024-11-28 03:16:25,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states and 222 transitions. [2024-11-28 03:16:25,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-11-28 03:16:25,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 150 states have (on average 1.48) internal successors, (222), 149 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:25,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 222 transitions. [2024-11-28 03:16:25,571 INFO L240 hiAutomatonCegarLoop]: Abstraction has 150 states and 222 transitions. [2024-11-28 03:16:25,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:16:25,572 INFO L425 stractBuchiCegarLoop]: Abstraction has 150 states and 222 transitions. [2024-11-28 03:16:25,573 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-28 03:16:25,573 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 150 states and 222 transitions. [2024-11-28 03:16:25,575 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 148 [2024-11-28 03:16:25,575 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 03:16:25,575 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 03:16:25,576 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 03:16:25,576 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:25,576 INFO L747 eck$LassoCheckResult]: Stem: "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(15, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_~cond~0#1;" [2024-11-28 03:16:25,577 INFO L749 eck$LassoCheckResult]: Loop: "havoc main_#t~nondet10#1;main_~cond~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;" "assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1;" "assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" [2024-11-28 03:16:25,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:25,577 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2024-11-28 03:16:25,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:16:25,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553710068] [2024-11-28 03:16:25,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:25,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:16:25,586 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:16:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:16:25,593 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:16:25,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:25,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1627787705, now seen corresponding path program 1 times [2024-11-28 03:16:25,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:16:25,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787684953] [2024-11-28 03:16:25,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:25,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:25,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-28 03:16:25,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787684953] [2024-11-28 03:16:25,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787684953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:16:25,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037307357] [2024-11-28 03:16:25,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:25,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:25,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:16:25,639 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:16:25,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:16:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:25,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:16:25,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:16:25,748 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:16:25,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037307357] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:16:25,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:16:25,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-28 03:16:25,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545846838] [2024-11-28 03:16:25,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:16:25,789 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-28 03:16:25,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-28 03:16:25,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:16:25,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:16:25,790 INFO L87 Difference]: Start difference. First operand 150 states and 222 transitions. cyclomatic complexity: 80 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:25,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:25,834 INFO L93 Difference]: Finished difference Result 290 states and 418 transitions. [2024-11-28 03:16:25,834 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 290 states and 418 transitions. [2024-11-28 03:16:25,841 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 288 [2024-11-28 03:16:25,847 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 290 states to 290 states and 418 transitions. [2024-11-28 03:16:25,850 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 290 [2024-11-28 03:16:25,851 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 290 [2024-11-28 03:16:25,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 290 states and 418 transitions. [2024-11-28 03:16:25,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-28 03:16:25,853 INFO L218 hiAutomatonCegarLoop]: Abstraction has 290 states and 418 transitions. [2024-11-28 03:16:25,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states and 418 transitions. [2024-11-28 03:16:25,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2024-11-28 03:16:25,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 290 states have (on average 1.4413793103448276) internal successors, (418), 289 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:25,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 418 transitions. [2024-11-28 03:16:25,894 INFO L240 hiAutomatonCegarLoop]: Abstraction has 290 states and 418 transitions. [2024-11-28 03:16:25,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:16:25,896 INFO L425 stractBuchiCegarLoop]: Abstraction has 290 states and 418 transitions. [2024-11-28 03:16:25,897 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-28 03:16:25,898 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 290 states and 418 transitions. [2024-11-28 03:16:25,901 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 288 [2024-11-28 03:16:25,902 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 03:16:25,902 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 03:16:25,902 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 03:16:25,902 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:25,903 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_~cond~0#1;" [2024-11-28 03:16:25,903 INFO L749 eck$LassoCheckResult]: Loop: "havoc main_#t~nondet10#1;main_~cond~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;" "assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" [2024-11-28 03:16:25,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:25,904 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2024-11-28 03:16:25,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:16:25,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794234309] [2024-11-28 03:16:25,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:25,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:16:25,911 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:16:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:16:25,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:16:25,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:25,918 INFO L85 PathProgramCache]: Analyzing trace with hash 818441079, now seen corresponding path program 1 times [2024-11-28 03:16:25,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:16:25,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023309061] [2024-11-28 03:16:25,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:25,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:25,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-28 03:16:25,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023309061] [2024-11-28 03:16:25,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023309061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:16:25,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228107614] [2024-11-28 03:16:25,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:25,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:25,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:16:25,973 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:16:25,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:16:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:26,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:16:26,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:16:26,085 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:16:26,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228107614] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:16:26,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:16:26,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-28 03:16:26,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105225216] [2024-11-28 03:16:26,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:16:26,115 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-28 03:16:26,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-28 03:16:26,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:16:26,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:16:26,116 INFO L87 Difference]: Start difference. First operand 290 states and 418 transitions. cyclomatic complexity: 144 Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:26,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:26,146 INFO L93 Difference]: Finished difference Result 562 states and 786 transitions. [2024-11-28 03:16:26,146 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 562 states and 786 transitions. [2024-11-28 03:16:26,157 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 560 [2024-11-28 03:16:26,164 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 562 states to 562 states and 786 transitions. [2024-11-28 03:16:26,165 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 562 [2024-11-28 03:16:26,166 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 562 [2024-11-28 03:16:26,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 562 states and 786 transitions. [2024-11-28 03:16:26,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-28 03:16:26,174 INFO L218 hiAutomatonCegarLoop]: Abstraction has 562 states and 786 transitions. [2024-11-28 03:16:26,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states and 786 transitions. [2024-11-28 03:16:26,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2024-11-28 03:16:26,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 562 states have (on average 1.398576512455516) internal successors, (786), 561 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:26,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 786 transitions. [2024-11-28 03:16:26,221 INFO L240 hiAutomatonCegarLoop]: Abstraction has 562 states and 786 transitions. [2024-11-28 03:16:26,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:16:26,224 INFO L425 stractBuchiCegarLoop]: Abstraction has 562 states and 786 transitions. [2024-11-28 03:16:26,225 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-11-28 03:16:26,226 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 562 states and 786 transitions. [2024-11-28 03:16:26,233 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 560 [2024-11-28 03:16:26,234 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 03:16:26,234 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 03:16:26,234 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 03:16:26,234 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:26,234 INFO L747 eck$LassoCheckResult]: Stem: "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(15, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_~cond~0#1;" [2024-11-28 03:16:26,234 INFO L749 eck$LassoCheckResult]: Loop: "havoc main_#t~nondet10#1;main_~cond~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;" "assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" [2024-11-28 03:16:26,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:26,235 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2024-11-28 03:16:26,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:16:26,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897702052] [2024-11-28 03:16:26,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:26,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:16:26,243 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:16:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:16:26,248 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:16:26,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:26,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1701518855, now seen corresponding path program 1 times [2024-11-28 03:16:26,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:16:26,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012183151] [2024-11-28 03:16:26,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:26,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:16:26,256 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:16:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:16:26,263 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:16:26,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:26,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1159342651, now seen corresponding path program 1 times [2024-11-28 03:16:26,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:16:26,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594858888] [2024-11-28 03:16:26,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:26,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:16:26,274 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:16:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:16:26,283 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:16:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:16:26,690 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:16:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:16:26,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:16:26 BoogieIcfgContainer [2024-11-28 03:16:26,745 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-28 03:16:26,746 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:16:26,746 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:16:26,746 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:16:26,747 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:24" (3/4) ... [2024-11-28 03:16:26,750 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-28 03:16:26,799 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 03:16:26,800 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:16:26,801 INFO L158 Benchmark]: Toolchain (without parser) took 3354.45ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 65.2MB in the end (delta: 52.2MB). Peak memory consumption was 55.3MB. Max. memory is 16.1GB. [2024-11-28 03:16:26,801 INFO L158 Benchmark]: CDTParser took 2.11ms. Allocated memory is still 117.4MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:16:26,801 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.88ms. Allocated memory is still 142.6MB. Free memory was 117.2MB in the beginning and 106.4MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:16:26,802 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.31ms. Allocated memory is still 142.6MB. Free memory was 106.4MB in the beginning and 105.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:16:26,802 INFO L158 Benchmark]: Boogie Preprocessor took 40.01ms. Allocated memory is still 142.6MB. Free memory was 105.1MB in the beginning and 103.8MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:16:26,803 INFO L158 Benchmark]: RCFGBuilder took 441.74ms. Allocated memory is still 142.6MB. Free memory was 103.8MB in the beginning and 92.6MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:16:26,803 INFO L158 Benchmark]: BuchiAutomizer took 2498.33ms. Allocated memory is still 142.6MB. Free memory was 92.6MB in the beginning and 66.9MB in the end (delta: 25.7MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2024-11-28 03:16:26,804 INFO L158 Benchmark]: Witness Printer took 54.05ms. Allocated memory is still 142.6MB. Free memory was 66.9MB in the beginning and 65.2MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:16:26,806 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.11ms. Allocated memory is still 117.4MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.88ms. Allocated memory is still 142.6MB. Free memory was 117.2MB in the beginning and 106.4MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.31ms. Allocated memory is still 142.6MB. Free memory was 106.4MB in the beginning and 105.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.01ms. Allocated memory is still 142.6MB. Free memory was 105.1MB in the beginning and 103.8MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 441.74ms. Allocated memory is still 142.6MB. Free memory was 103.8MB in the beginning and 92.6MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2498.33ms. Allocated memory is still 142.6MB. Free memory was 92.6MB in the beginning and 66.9MB in the end (delta: 25.7MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Witness Printer took 54.05ms. Allocated memory is still 142.6MB. Free memory was 66.9MB in the beginning and 65.2MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (5 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.5 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 562 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.3s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 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 [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 128 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 128 mSDsluCounter, 403 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 148 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27 IncrementalHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 255 mSDtfsCounter, 27 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI5 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: 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: 29]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L27] int cond; Loop: [L30] cond = __VERIFIER_nondet_int() [L31] COND FALSE !(cond == 0) [L34] lk1 = 0 [L36] lk2 = 0 [L38] lk3 = 0 [L40] lk4 = 0 [L42] lk5 = 0 [L44] lk6 = 0 [L48] COND FALSE !(p1 != 0) [L52] COND FALSE !(p2 != 0) [L56] COND FALSE !(p3 != 0) [L60] COND FALSE !(p4 != 0) [L64] COND FALSE !(p5 != 0) [L68] COND FALSE !(p6 != 0) [L74] COND FALSE !(p1 != 0) [L79] COND FALSE !(p2 != 0) [L84] COND FALSE !(p3 != 0) [L89] COND FALSE !(p4 != 0) [L94] COND FALSE !(p5 != 0) [L99] COND FALSE !(p6 != 0) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 29]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L27] int cond; Loop: [L30] cond = __VERIFIER_nondet_int() [L31] COND FALSE !(cond == 0) [L34] lk1 = 0 [L36] lk2 = 0 [L38] lk3 = 0 [L40] lk4 = 0 [L42] lk5 = 0 [L44] lk6 = 0 [L48] COND FALSE !(p1 != 0) [L52] COND FALSE !(p2 != 0) [L56] COND FALSE !(p3 != 0) [L60] COND FALSE !(p4 != 0) [L64] COND FALSE !(p5 != 0) [L68] COND FALSE !(p6 != 0) [L74] COND FALSE !(p1 != 0) [L79] COND FALSE !(p2 != 0) [L84] COND FALSE !(p3 != 0) [L89] COND FALSE !(p4 != 0) [L94] COND FALSE !(p5 != 0) [L99] COND FALSE !(p6 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-11-28 03:16:26,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 03:16:27,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:16:27,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:16:27,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:16:27,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:16:27,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea937e11-e9b2-4479-8c83-24b7e478fd44/bin/uautomizer-verify-aQ6SnzHsRB/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)