./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i --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_a580a2c0-0b50-43c4-b146-b70f8517d96e/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580a2c0-0b50-43c4-b146-b70f8517d96e/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_a580a2c0-0b50-43c4-b146-b70f8517d96e/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580a2c0-0b50-43c4-b146-b70f8517d96e/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580a2c0-0b50-43c4-b146-b70f8517d96e/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_a580a2c0-0b50-43c4-b146-b70f8517d96e/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 fe3c8b13f268d0f08d959b203c6650243d0aa01256dfd7d03d9b6e6990dd887b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:10:23,245 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:10:23,300 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580a2c0-0b50-43c4-b146-b70f8517d96e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:10:23,304 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:10:23,305 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:10:23,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:10:23,329 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:10:23,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:10:23,330 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:10:23,330 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:10:23,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:10:23,330 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:10:23,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:10:23,331 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:10:23,331 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:10:23,331 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:10:23,331 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:10:23,331 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:10:23,331 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:10:23,331 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:10:23,331 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:10:23,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:10:23,332 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:10:23,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:10:23,332 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:10:23,332 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:10:23,332 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:10:23,332 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:10:23,332 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:10:23,332 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:10:23,332 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:10:23,332 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:10:23,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:10:23,333 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:10:23,333 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:10:23,333 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:10:23,333 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:10:23,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:10:23,335 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:10:23,335 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:10:23,336 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:10:23,336 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:10:23,336 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:10:23,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:10:23,336 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:10:23,336 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:10:23,336 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:10:23,336 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:10:23,336 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_a580a2c0-0b50-43c4-b146-b70f8517d96e/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 -> fe3c8b13f268d0f08d959b203c6650243d0aa01256dfd7d03d9b6e6990dd887b [2024-11-27 20:10:23,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:10:23,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:10:23,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:10:23,653 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:10:23,653 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:10:23,654 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580a2c0-0b50-43c4-b146-b70f8517d96e/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i [2024-11-27 20:10:26,645 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580a2c0-0b50-43c4-b146-b70f8517d96e/bin/uautomizer-verify-aQ6SnzHsRB/data/97b815322/e98d14ccd59246858d1083f2cabfae32/FLAG40cec1d7d [2024-11-27 20:10:26,886 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:10:26,887 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580a2c0-0b50-43c4-b146-b70f8517d96e/sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i [2024-11-27 20:10:26,898 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580a2c0-0b50-43c4-b146-b70f8517d96e/bin/uautomizer-verify-aQ6SnzHsRB/data/97b815322/e98d14ccd59246858d1083f2cabfae32/FLAG40cec1d7d [2024-11-27 20:10:26,916 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580a2c0-0b50-43c4-b146-b70f8517d96e/bin/uautomizer-verify-aQ6SnzHsRB/data/97b815322/e98d14ccd59246858d1083f2cabfae32 [2024-11-27 20:10:26,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:10:26,921 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:10:26,922 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:10:26,923 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:10:26,927 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:10:26,928 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:10:26" (1/1) ... [2024-11-27 20:10:26,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74ae97c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:26, skipping insertion in model container [2024-11-27 20:10:26,931 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:10:26" (1/1) ... [2024-11-27 20:10:26,947 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:10:27,132 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_a580a2c0-0b50-43c4-b146-b70f8517d96e/sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i[873,886] [2024-11-27 20:10:27,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:10:27,159 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:10:27,171 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_a580a2c0-0b50-43c4-b146-b70f8517d96e/sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i[873,886] [2024-11-27 20:10:27,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:10:27,191 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:10:27,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:27 WrapperNode [2024-11-27 20:10:27,191 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:10:27,192 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:10:27,192 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:10:27,192 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:10:27,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:27" (1/1) ... [2024-11-27 20:10:27,210 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:27" (1/1) ... [2024-11-27 20:10:27,230 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2024-11-27 20:10:27,231 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:10:27,231 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:10:27,231 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:10:27,232 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:10:27,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:27" (1/1) ... [2024-11-27 20:10:27,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:27" (1/1) ... [2024-11-27 20:10:27,242 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:27" (1/1) ... [2024-11-27 20:10:27,256 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]. [2024-11-27 20:10:27,257 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:27" (1/1) ... [2024-11-27 20:10:27,259 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:27" (1/1) ... [2024-11-27 20:10:27,261 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:27" (1/1) ... [2024-11-27 20:10:27,263 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:27" (1/1) ... [2024-11-27 20:10:27,268 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:27" (1/1) ... [2024-11-27 20:10:27,273 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:27" (1/1) ... [2024-11-27 20:10:27,273 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:27" (1/1) ... [2024-11-27 20:10:27,274 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:10:27,275 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:10:27,275 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:10:27,276 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:10:27,276 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:27" (1/1) ... [2024-11-27 20:10:27,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:10:27,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580a2c0-0b50-43c4-b146-b70f8517d96e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:10:27,307 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580a2c0-0b50-43c4-b146-b70f8517d96e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:10:27,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580a2c0-0b50-43c4-b146-b70f8517d96e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:10:27,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:10:27,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:10:27,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:10:27,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:10:27,383 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:10:27,385 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:10:27,483 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-27 20:10:27,484 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:10:27,492 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:10:27,493 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-27 20:10:27,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:10:27 BoogieIcfgContainer [2024-11-27 20:10:27,493 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:10:27,496 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:10:27,496 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:10:27,502 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:10:27,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:10:26" (1/3) ... [2024-11-27 20:10:27,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d0cd87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:10:27, skipping insertion in model container [2024-11-27 20:10:27,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:27" (2/3) ... [2024-11-27 20:10:27,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d0cd87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:10:27, skipping insertion in model container [2024-11-27 20:10:27,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:10:27" (3/3) ... [2024-11-27 20:10:27,506 INFO L128 eAbstractionObserver]: Analyzing ICFG benchmark18_conjunctive.i [2024-11-27 20:10:27,519 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:10:27,521 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG benchmark18_conjunctive.i that has 1 procedures, 13 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:10:27,572 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:10:27,584 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;@313e0cef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:10:27,584 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:10:27,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:27,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-27 20:10:27,593 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:27,593 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:27,594 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:27,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:27,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1807120263, now seen corresponding path program 1 times [2024-11-27 20:10:27,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:27,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187701960] [2024-11-27 20:10:27,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:27,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:27,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:27,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:27,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187701960] [2024-11-27 20:10:27,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187701960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:27,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:27,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:10:27,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340166463] [2024-11-27 20:10:27,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:27,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:10:27,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:27,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:10:27,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:10:27,778 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:27,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:27,788 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2024-11-27 20:10:27,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:10:27,790 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-27 20:10:27,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:27,796 INFO L225 Difference]: With dead ends: 21 [2024-11-27 20:10:27,797 INFO L226 Difference]: Without dead ends: 9 [2024-11-27 20:10:27,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:10:27,804 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:27,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:10:27,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-11-27 20:10:27,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-11-27 20:10:27,831 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) [2024-11-27 20:10:27,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-27 20:10:27,839 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2024-11-27 20:10:27,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:27,842 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-27 20:10:27,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:27,843 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-27 20:10:27,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-27 20:10:27,843 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:27,843 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:27,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:10:27,844 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:27,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:27,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1807001099, now seen corresponding path program 1 times [2024-11-27 20:10:27,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:27,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043384930] [2024-11-27 20:10:27,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:27,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:27,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:27,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:27,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043384930] [2024-11-27 20:10:27,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043384930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:27,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:27,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:10:27,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338091708] [2024-11-27 20:10:27,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:27,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:10:27,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:27,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:27,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:27,949 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:27,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:27,970 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2024-11-27 20:10:27,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:27,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-27 20:10:27,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:27,971 INFO L225 Difference]: With dead ends: 14 [2024-11-27 20:10:27,971 INFO L226 Difference]: Without dead ends: 10 [2024-11-27 20:10:27,971 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 [2024-11-27 20:10:27,972 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:27,972 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 10 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:10:27,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-27 20:10:27,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-11-27 20:10:27,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2024-11-27 20:10:27,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2024-11-27 20:10:27,976 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2024-11-27 20:10:27,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:27,976 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2024-11-27 20:10:27,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:27,976 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2024-11-27 20:10:27,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-27 20:10:27,977 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:27,977 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:27,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:10:27,977 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:27,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:27,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1300044975, now seen corresponding path program 1 times [2024-11-27 20:10:27,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:27,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959636582] [2024-11-27 20:10:27,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:27,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:28,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:28,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:28,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959636582] [2024-11-27 20:10:28,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959636582] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:10:28,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963747110] [2024-11-27 20:10:28,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:28,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:10:28,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580a2c0-0b50-43c4-b146-b70f8517d96e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:10:28,286 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580a2c0-0b50-43c4-b146-b70f8517d96e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:10:28,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580a2c0-0b50-43c4-b146-b70f8517d96e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:10:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:28,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 20:10:28,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:10:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:28,540 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:10:28,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:28,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963747110] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:10:28,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:10:28,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-27 20:10:28,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431790043] [2024-11-27 20:10:28,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:10:28,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:10:28,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:28,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:10:28,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:10:28,683 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 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) [2024-11-27 20:10:28,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:28,766 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2024-11-27 20:10:28,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:10:28,766 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 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 9 [2024-11-27 20:10:28,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:28,767 INFO L225 Difference]: With dead ends: 14 [2024-11-27 20:10:28,767 INFO L226 Difference]: Without dead ends: 0 [2024-11-27 20:10:28,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:10:28,768 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:28,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:10:28,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-27 20:10:28,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-27 20:10:28,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-11-27 20:10:28,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-27 20:10:28,770 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2024-11-27 20:10:28,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:28,770 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-27 20:10:28,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 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) [2024-11-27 20:10:28,770 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-27 20:10:28,770 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-27 20:10:28,772 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-27 20:10:28,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580a2c0-0b50-43c4-b146-b70f8517d96e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:10:28,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580a2c0-0b50-43c4-b146-b70f8517d96e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:10:28,976 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-27 20:10:28,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-27 20:10:29,013 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 20:10:29,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 08:10:29 BoogieIcfgContainer [2024-11-27 20:10:29,028 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 20:10:29,029 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 20:10:29,029 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 20:10:29,029 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 20:10:29,030 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:10:27" (3/4) ... [2024-11-27 20:10:29,032 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-27 20:10:29,040 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-27 20:10:29,041 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-27 20:10:29,041 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-27 20:10:29,041 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-27 20:10:29,121 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580a2c0-0b50-43c4-b146-b70f8517d96e/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 20:10:29,121 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580a2c0-0b50-43c4-b146-b70f8517d96e/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 20:10:29,122 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 20:10:29,123 INFO L158 Benchmark]: Toolchain (without parser) took 2201.64ms. Allocated memory is still 117.4MB. Free memory was 92.5MB in the beginning and 59.5MB in the end (delta: 33.0MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. [2024-11-27 20:10:29,123 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory was 74.5MB in the beginning and 74.3MB in the end (delta: 196.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:10:29,124 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.31ms. Allocated memory is still 117.4MB. Free memory was 92.5MB in the beginning and 81.7MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:10:29,124 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.54ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 80.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:10:29,125 INFO L158 Benchmark]: Boogie Preprocessor took 43.33ms. Allocated memory is still 117.4MB. Free memory was 80.4MB in the beginning and 79.3MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:10:29,125 INFO L158 Benchmark]: RCFGBuilder took 218.15ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 70.0MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:10:29,125 INFO L158 Benchmark]: TraceAbstraction took 1532.42ms. Allocated memory is still 117.4MB. Free memory was 69.4MB in the beginning and 64.0MB in the end (delta: 5.4MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. [2024-11-27 20:10:29,125 INFO L158 Benchmark]: Witness Printer took 92.64ms. Allocated memory is still 117.4MB. Free memory was 64.0MB in the beginning and 59.5MB in the end (delta: 4.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:10:29,129 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory was 74.5MB in the beginning and 74.3MB in the end (delta: 196.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.31ms. Allocated memory is still 117.4MB. Free memory was 92.5MB in the beginning and 81.7MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.54ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 80.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 43.33ms. Allocated memory is still 117.4MB. Free memory was 80.4MB in the beginning and 79.3MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 218.15ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 70.0MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1532.42ms. Allocated memory is still 117.4MB. Free memory was 69.4MB in the beginning and 64.0MB in the end (delta: 5.4MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. * Witness Printer took 92.64ms. Allocated memory is still 117.4MB. Free memory was 64.0MB in the beginning and 59.5MB in the end (delta: 4.5MB). There was no memory consumed. 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 - PositiveResult [Line: 16]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52 IncrementalHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 24 mSDtfsCounter, 52 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 15, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 155 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((i == k) && (k <= n)) RESULT: Ultimate proved your program to be correct! [2024-11-27 20:10:29,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580a2c0-0b50-43c4-b146-b70f8517d96e/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 Result: TRUE