./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/underapprox_1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/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_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/underapprox_1-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 11d6d848444c2f9afc2eba3aace7d6b72c4d182e1953661ba8811794c092f478 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:35:52,757 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:35:52,824 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:35:52,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:35:52,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:35:52,863 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:35:52,864 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:35:52,864 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:35:52,865 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:35:52,865 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:35:52,865 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:35:52,865 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:35:52,867 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:35:52,867 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:35:52,868 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:35:52,868 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:35:52,868 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:35:52,868 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:35:52,868 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:35:52,868 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:35:52,868 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:35:52,869 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:35:52,869 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:35:52,869 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:35:52,869 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:35:52,869 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:35:52,869 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:35:52,869 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:35:52,870 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:35:52,870 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:35:52,870 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:35:52,870 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:35:52,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:35:52,870 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:35:52,872 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:35:52,872 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:35:52,872 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:35:52,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:35:52,873 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:35:52,873 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:35:52,873 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:35:52,873 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:35:52,873 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:35:52,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:35:52,873 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:35:52,873 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:35:52,874 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:35:52,874 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:35:52,874 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_fdee325a-0dc8-4442-a333-0d5f1252f0be/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(G ! call(reach_error())) ) 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 -> 11d6d848444c2f9afc2eba3aace7d6b72c4d182e1953661ba8811794c092f478 [2024-11-28 04:35:53,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:35:53,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:35:53,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:35:53,252 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:35:53,253 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:35:53,254 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/loop-acceleration/underapprox_1-1.c [2024-11-28 04:35:56,355 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/data/df9dd1059/d84103547b0544d0b776046e78ee8349/FLAGb2f90d2f3 [2024-11-28 04:35:56,621 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:35:56,622 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/sv-benchmarks/c/loop-acceleration/underapprox_1-1.c [2024-11-28 04:35:56,630 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/data/df9dd1059/d84103547b0544d0b776046e78ee8349/FLAGb2f90d2f3 [2024-11-28 04:35:56,652 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/data/df9dd1059/d84103547b0544d0b776046e78ee8349 [2024-11-28 04:35:56,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:35:56,658 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:35:56,662 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:35:56,662 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:35:56,667 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:35:56,668 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:35:56" (1/1) ... [2024-11-28 04:35:56,669 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@775a15a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:56, skipping insertion in model container [2024-11-28 04:35:56,669 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:35:56" (1/1) ... [2024-11-28 04:35:56,687 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:35:56,883 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/sv-benchmarks/c/loop-acceleration/underapprox_1-1.c[327,340] [2024-11-28 04:35:56,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:35:56,920 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:35:56,936 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/sv-benchmarks/c/loop-acceleration/underapprox_1-1.c[327,340] [2024-11-28 04:35:56,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:35:56,962 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:35:56,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:56 WrapperNode [2024-11-28 04:35:56,965 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:35:56,966 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:35:56,966 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:35:56,966 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:35:56,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:56" (1/1) ... [2024-11-28 04:35:56,986 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:56" (1/1) ... [2024-11-28 04:35:57,006 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 25 [2024-11-28 04:35:57,007 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:35:57,008 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:35:57,009 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:35:57,010 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:35:57,020 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:56" (1/1) ... [2024-11-28 04:35:57,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:56" (1/1) ... [2024-11-28 04:35:57,021 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:56" (1/1) ... [2024-11-28 04:35:57,035 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 04:35:57,036 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:56" (1/1) ... [2024-11-28 04:35:57,038 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:56" (1/1) ... [2024-11-28 04:35:57,040 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:56" (1/1) ... [2024-11-28 04:35:57,041 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:56" (1/1) ... [2024-11-28 04:35:57,045 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:56" (1/1) ... [2024-11-28 04:35:57,045 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:56" (1/1) ... [2024-11-28 04:35:57,046 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:56" (1/1) ... [2024-11-28 04:35:57,048 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:35:57,049 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:35:57,049 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:35:57,049 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:35:57,050 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:56" (1/1) ... [2024-11-28 04:35:57,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:35:57,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:35:57,090 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:35:57,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:35:57,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:35:57,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:35:57,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:35:57,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:35:57,175 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:35:57,177 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:35:57,307 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-28 04:35:57,307 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:35:57,316 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:35:57,318 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:35:57,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:35:57 BoogieIcfgContainer [2024-11-28 04:35:57,318 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:35:57,322 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:35:57,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:35:57,331 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:35:57,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:35:56" (1/3) ... [2024-11-28 04:35:57,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ace338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:35:57, skipping insertion in model container [2024-11-28 04:35:57,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:56" (2/3) ... [2024-11-28 04:35:57,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ace338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:35:57, skipping insertion in model container [2024-11-28 04:35:57,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:35:57" (3/3) ... [2024-11-28 04:35:57,335 INFO L128 eAbstractionObserver]: Analyzing ICFG underapprox_1-1.c [2024-11-28 04:35:57,353 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:35:57,357 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG underapprox_1-1.c that has 1 procedures, 12 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:35:57,431 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:35:57,451 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@27acdb8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:35:57,451 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:35:57,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 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 04:35:57,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 04:35:57,464 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:35:57,464 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:35:57,465 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:35:57,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:35:57,472 INFO L85 PathProgramCache]: Analyzing trace with hash 889664619, now seen corresponding path program 1 times [2024-11-28 04:35:57,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:35:57,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425497854] [2024-11-28 04:35:57,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:57,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:35:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:35:57,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:35:57,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:35:57,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425497854] [2024-11-28 04:35:57,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425497854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:35:57,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:35:57,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:35:57,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952167662] [2024-11-28 04:35:57,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:35:57,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:35:57,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:35:57,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:35:57,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:35:57,739 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 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) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 04:35:57,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:35:57,764 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2024-11-28 04:35:57,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:35:57,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2024-11-28 04:35:57,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:35:57,773 INFO L225 Difference]: With dead ends: 22 [2024-11-28 04:35:57,773 INFO L226 Difference]: Without dead ends: 10 [2024-11-28 04:35:57,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:35:57,779 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:35:57,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 17 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:35:57,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-28 04:35:57,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-11-28 04:35:57,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 04:35:57,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-28 04:35:57,812 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2024-11-28 04:35:57,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:35:57,812 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-28 04:35:57,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 04:35:57,813 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-28 04:35:57,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 04:35:57,813 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:35:57,813 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:35:57,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:35:57,813 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:35:57,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:35:57,814 INFO L85 PathProgramCache]: Analyzing trace with hash 207982255, now seen corresponding path program 1 times [2024-11-28 04:35:57,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:35:57,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996927753] [2024-11-28 04:35:57,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:57,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:35:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:35:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:35:57,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:35:57,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996927753] [2024-11-28 04:35:57,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996927753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:35:57,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234684442] [2024-11-28 04:35:57,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:57,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:35:57,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:35:57,996 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:35:57,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:35:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:35:58,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:35:58,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:35:58,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:35:58,151 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:35:58,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:35:58,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234684442] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:35:58,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:35:58,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 9 [2024-11-28 04:35:58,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80221636] [2024-11-28 04:35:58,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:35:58,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:35:58,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:35:58,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:35:58,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:35:58,248 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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 04:35:58,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:35:58,349 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2024-11-28 04:35:58,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:35:58,350 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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) Word has length 8 [2024-11-28 04:35:58,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:35:58,350 INFO L225 Difference]: With dead ends: 23 [2024-11-28 04:35:58,350 INFO L226 Difference]: Without dead ends: 16 [2024-11-28 04:35:58,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:35:58,352 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:35:58,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 33 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:35:58,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-28 04:35:58,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2024-11-28 04:35:58,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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 04:35:58,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-11-28 04:35:58,357 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2024-11-28 04:35:58,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:35:58,357 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-11-28 04:35:58,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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 04:35:58,358 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-11-28 04:35:58,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 04:35:58,358 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:35:58,358 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2024-11-28 04:35:58,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:35:58,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:35:58,563 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:35:58,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:35:58,564 INFO L85 PathProgramCache]: Analyzing trace with hash -858744965, now seen corresponding path program 2 times [2024-11-28 04:35:58,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:35:58,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180018283] [2024-11-28 04:35:58,564 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:35:58,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:35:58,591 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:35:58,591 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:35:58,901 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:35:58,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:35:58,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180018283] [2024-11-28 04:35:58,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180018283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:35:58,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655039897] [2024-11-28 04:35:58,905 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:35:58,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:35:58,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:35:58,909 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:35:58,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:35:58,958 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:35:58,958 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:35:58,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:35:58,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:35:59,075 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:35:59,076 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:35:59,293 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:35:59,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655039897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:35:59,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:35:59,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2024-11-28 04:35:59,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425453709] [2024-11-28 04:35:59,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:35:59,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:35:59,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:35:59,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:35:59,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:35:59,296 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:35:59,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:35:59,722 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-11-28 04:35:59,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:35:59,723 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-28 04:35:59,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:35:59,725 INFO L225 Difference]: With dead ends: 38 [2024-11-28 04:35:59,725 INFO L226 Difference]: Without dead ends: 29 [2024-11-28 04:35:59,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=154, Invalid=548, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:35:59,727 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:35:59,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 63 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:35:59,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-28 04:35:59,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-28 04:35:59,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 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 04:35:59,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-11-28 04:35:59,740 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 14 [2024-11-28 04:35:59,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:35:59,740 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-11-28 04:35:59,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:35:59,740 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-11-28 04:35:59,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 04:35:59,740 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:35:59,741 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1] [2024-11-28 04:35:59,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:35:59,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:35:59,945 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:35:59,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:35:59,946 INFO L85 PathProgramCache]: Analyzing trace with hash -2066234621, now seen corresponding path program 3 times [2024-11-28 04:35:59,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:35:59,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255314485] [2024-11-28 04:35:59,946 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:35:59,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:35:59,994 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 04:35:59,994 INFO L230 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-28 04:35:59,995 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:36:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:36:00,036 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:36:00,036 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:36:00,037 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 04:36:00,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:36:00,044 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-28 04:36:00,063 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:36:00,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:36:00 BoogieIcfgContainer [2024-11-28 04:36:00,066 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:36:00,066 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:36:00,066 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:36:00,066 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:36:00,067 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:35:57" (3/4) ... [2024-11-28 04:36:00,068 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-28 04:36:00,106 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 10. [2024-11-28 04:36:00,168 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 04:36:00,168 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 04:36:00,169 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:36:00,170 INFO L158 Benchmark]: Toolchain (without parser) took 3511.68ms. Allocated memory is still 142.6MB. Free memory was 117.9MB in the beginning and 73.4MB in the end (delta: 44.5MB). Peak memory consumption was 45.9MB. Max. memory is 16.1GB. [2024-11-28 04:36:00,170 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory was 74.6MB in the beginning and 74.5MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:36:00,170 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.70ms. Allocated memory is still 142.6MB. Free memory was 117.7MB in the beginning and 107.0MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:36:00,171 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.42ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 106.1MB in the end (delta: 943.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:36:00,172 INFO L158 Benchmark]: Boogie Preprocessor took 39.80ms. Allocated memory is still 142.6MB. Free memory was 106.1MB in the beginning and 104.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:36:00,172 INFO L158 Benchmark]: RCFGBuilder took 269.81ms. Allocated memory is still 142.6MB. Free memory was 104.9MB in the beginning and 96.1MB in the end (delta: 8.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 04:36:00,173 INFO L158 Benchmark]: TraceAbstraction took 2743.48ms. Allocated memory is still 142.6MB. Free memory was 95.7MB in the beginning and 78.1MB in the end (delta: 17.6MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2024-11-28 04:36:00,173 INFO L158 Benchmark]: Witness Printer took 102.48ms. Allocated memory is still 142.6MB. Free memory was 77.4MB in the beginning and 73.4MB in the end (delta: 4.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:36:00,175 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory was 74.6MB in the beginning and 74.5MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.70ms. Allocated memory is still 142.6MB. Free memory was 117.7MB in the beginning and 107.0MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.42ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 106.1MB in the end (delta: 943.8kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.80ms. Allocated memory is still 142.6MB. Free memory was 106.1MB in the beginning and 104.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 269.81ms. Allocated memory is still 142.6MB. Free memory was 104.9MB in the beginning and 96.1MB in the end (delta: 8.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2743.48ms. Allocated memory is still 142.6MB. Free memory was 95.7MB in the beginning and 78.1MB in the end (delta: 17.6MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * Witness Printer took 102.48ms. Allocated memory is still 142.6MB. Free memory was 77.4MB in the beginning and 73.4MB in the end (delta: 4.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L13] unsigned int x = 0; [L14] unsigned int y = 1; VAL [x=0, y=1] [L16] COND TRUE x < 6 VAL [x=0, y=1] [L17] x++ [L18] y *= 2 VAL [x=1, y=2] [L16] COND TRUE x < 6 VAL [x=1, y=2] [L17] x++ [L18] y *= 2 VAL [x=2, y=4] [L16] COND TRUE x < 6 VAL [x=2, y=4] [L17] x++ [L18] y *= 2 VAL [x=3, y=8] [L16] COND TRUE x < 6 VAL [x=3, y=8] [L17] x++ [L18] y *= 2 VAL [x=4, y=16] [L16] COND TRUE x < 6 VAL [x=4, y=16] [L17] x++ [L18] y *= 2 VAL [x=5, y=32] [L16] COND TRUE x < 6 VAL [x=5, y=32] [L17] x++ [L18] y *= 2 VAL [x=6, y=64] [L16] COND FALSE !(x < 6) VAL [y=64] [L21] CALL __VERIFIER_assert(y != 64) [L6] COND TRUE !(cond) [L7] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 113 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 91 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 185 IncrementalHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 22 mSDtfsCounter, 185 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=3, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 209 SizeOfPredicates, 0 NumberOfNonLiveVariables, 91 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/51 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-28 04:36:00,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdee325a-0dc8-4442-a333-0d5f1252f0be/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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