./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/condgf.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb779ace-e42c-46d1-a811-af3c6433d864/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb779ace-e42c-46d1-a811-af3c6433d864/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb779ace-e42c-46d1-a811-af3c6433d864/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb779ace-e42c-46d1-a811-af3c6433d864/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/condgf.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb779ace-e42c-46d1-a811-af3c6433d864/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb779ace-e42c-46d1-a811-af3c6433d864/bin/uautomizer-verify-LYvppIcaGC --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 f6e9c50b7debf63002c3de8c5fbbc063838f4d20677e88c6b86a62b1ad965f5f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:45:05,872 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:45:05,994 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb779ace-e42c-46d1-a811-af3c6433d864/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:45:06,000 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:45:06,001 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:45:06,031 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:45:06,032 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:45:06,032 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:45:06,033 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:45:06,033 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:45:06,033 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:45:06,033 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:45:06,034 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:45:06,034 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:45:06,034 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:45:06,034 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:45:06,034 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:45:06,034 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:45:06,034 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:45:06,035 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:45:06,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:45:06,035 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:45:06,035 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:45:06,035 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:45:06,035 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:45:06,035 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:45:06,036 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:45:06,036 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:45:06,036 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:45:06,036 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:45:06,036 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:45:06,036 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:45:06,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:45:06,037 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:45:06,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:45:06,037 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:45:06,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:45:06,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:45:06,037 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:45:06,037 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:45:06,037 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:45:06,038 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:45:06,038 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:45:06,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:45:06,038 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:45:06,038 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:45:06,038 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:45:06,038 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:45:06,038 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_eb779ace-e42c-46d1-a811-af3c6433d864/bin/uautomizer-verify-LYvppIcaGC 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 -> f6e9c50b7debf63002c3de8c5fbbc063838f4d20677e88c6b86a62b1ad965f5f [2024-11-23 23:45:06,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:45:06,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:45:06,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:45:06,440 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:45:06,441 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:45:06,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb779ace-e42c-46d1-a811-af3c6433d864/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/array-fpi/condgf.c [2024-11-23 23:45:09,579 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb779ace-e42c-46d1-a811-af3c6433d864/bin/uautomizer-verify-LYvppIcaGC/data/b7ee3f8cd/9d683eabad2f4f629531ee45e9745cc1/FLAGaf6068011 [2024-11-23 23:45:09,887 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:45:09,888 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb779ace-e42c-46d1-a811-af3c6433d864/sv-benchmarks/c/array-fpi/condgf.c [2024-11-23 23:45:09,896 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb779ace-e42c-46d1-a811-af3c6433d864/bin/uautomizer-verify-LYvppIcaGC/data/b7ee3f8cd/9d683eabad2f4f629531ee45e9745cc1/FLAGaf6068011 [2024-11-23 23:45:10,164 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb779ace-e42c-46d1-a811-af3c6433d864/bin/uautomizer-verify-LYvppIcaGC/data/b7ee3f8cd/9d683eabad2f4f629531ee45e9745cc1 [2024-11-23 23:45:10,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:45:10,169 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:45:10,170 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:45:10,171 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:45:10,178 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:45:10,182 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:45:10" (1/1) ... [2024-11-23 23:45:10,183 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62e80b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:10, skipping insertion in model container [2024-11-23 23:45:10,183 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:45:10" (1/1) ... [2024-11-23 23:45:10,203 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:45:10,408 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_eb779ace-e42c-46d1-a811-af3c6433d864/sv-benchmarks/c/array-fpi/condgf.c[589,602] [2024-11-23 23:45:10,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:45:10,454 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:45:10,468 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_eb779ace-e42c-46d1-a811-af3c6433d864/sv-benchmarks/c/array-fpi/condgf.c[589,602] [2024-11-23 23:45:10,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:45:10,506 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:45:10,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:10 WrapperNode [2024-11-23 23:45:10,508 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:45:10,509 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:45:10,509 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:45:10,509 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:45:10,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:10" (1/1) ... [2024-11-23 23:45:10,542 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:10" (1/1) ... [2024-11-23 23:45:10,570 INFO L138 Inliner]: procedures = 17, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 85 [2024-11-23 23:45:10,573 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:45:10,573 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:45:10,574 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:45:10,575 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:45:10,583 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:10" (1/1) ... [2024-11-23 23:45:10,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:10" (1/1) ... [2024-11-23 23:45:10,587 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:10" (1/1) ... [2024-11-23 23:45:10,606 INFO L175 MemorySlicer]: Split 13 memory accesses to 3 slices as follows [2, 4, 7]. 54 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 5 writes are split as follows [0, 2, 3]. [2024-11-23 23:45:10,609 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:10" (1/1) ... [2024-11-23 23:45:10,609 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:10" (1/1) ... [2024-11-23 23:45:10,621 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:10" (1/1) ... [2024-11-23 23:45:10,622 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:10" (1/1) ... [2024-11-23 23:45:10,628 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:10" (1/1) ... [2024-11-23 23:45:10,633 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:10" (1/1) ... [2024-11-23 23:45:10,634 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:10" (1/1) ... [2024-11-23 23:45:10,636 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:45:10,640 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:45:10,640 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:45:10,640 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:45:10,642 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:10" (1/1) ... [2024-11-23 23:45:10,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:45:10,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb779ace-e42c-46d1-a811-af3c6433d864/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:45:10,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb779ace-e42c-46d1-a811-af3c6433d864/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:45:10,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb779ace-e42c-46d1-a811-af3c6433d864/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:45:10,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:45:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:45:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:45:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 23:45:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 23:45:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 23:45:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 23:45:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 23:45:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 23:45:10,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:45:10,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:45:10,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 23:45:10,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 23:45:10,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 23:45:10,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 23:45:10,808 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:45:10,810 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:45:11,024 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-23 23:45:11,025 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:45:11,036 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:45:11,036 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-23 23:45:11,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:45:11 BoogieIcfgContainer [2024-11-23 23:45:11,037 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:45:11,039 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:45:11,039 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:45:11,048 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:45:11,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:45:10" (1/3) ... [2024-11-23 23:45:11,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b184344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:45:11, skipping insertion in model container [2024-11-23 23:45:11,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:10" (2/3) ... [2024-11-23 23:45:11,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b184344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:45:11, skipping insertion in model container [2024-11-23 23:45:11,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:45:11" (3/3) ... [2024-11-23 23:45:11,052 INFO L128 eAbstractionObserver]: Analyzing ICFG condgf.c [2024-11-23 23:45:11,072 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:45:11,076 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG condgf.c that has 1 procedures, 26 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-23 23:45:11,156 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:45:11,175 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;@5e65b0cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:45:11,175 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:45:11,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 25 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) [2024-11-23 23:45:11,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-23 23:45:11,187 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:11,188 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:11,189 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:11,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:11,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1954238631, now seen corresponding path program 1 times [2024-11-23 23:45:11,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:11,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269324523] [2024-11-23 23:45:11,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:11,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:11,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:45:11,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:11,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269324523] [2024-11-23 23:45:11,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269324523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:11,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:11,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:45:11,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145939516] [2024-11-23 23:45:11,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:11,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:45:11,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:11,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:45:11,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:45:11,469 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 25 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) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 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) [2024-11-23 23:45:11,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:11,489 INFO L93 Difference]: Finished difference Result 48 states and 68 transitions. [2024-11-23 23:45:11,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:45:11,491 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 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) Word has length 15 [2024-11-23 23:45:11,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:11,498 INFO L225 Difference]: With dead ends: 48 [2024-11-23 23:45:11,498 INFO L226 Difference]: Without dead ends: 22 [2024-11-23 23:45:11,502 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 [2024-11-23 23:45:11,506 INFO L435 NwaCegarLoop]: 31 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, 31 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 [2024-11-23 23:45:11,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:45:11,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-23 23:45:11,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-23 23:45:11,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:11,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-23 23:45:11,546 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2024-11-23 23:45:11,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:11,548 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-23 23:45:11,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 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) [2024-11-23 23:45:11,549 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-23 23:45:11,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-23 23:45:11,551 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:11,552 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:11,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:45:11,552 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:11,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:11,553 INFO L85 PathProgramCache]: Analyzing trace with hash -2082563227, now seen corresponding path program 1 times [2024-11-23 23:45:11,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:11,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300253814] [2024-11-23 23:45:11,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:11,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:11,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:45:11,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:11,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300253814] [2024-11-23 23:45:11,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300253814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:11,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:11,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:45:11,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286452458] [2024-11-23 23:45:11,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:11,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:45:11,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:11,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:45:11,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:45:11,787 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2024-11-23 23:45:11,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:11,910 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2024-11-23 23:45:11,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:45:11,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) Word has length 15 [2024-11-23 23:45:11,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:11,912 INFO L225 Difference]: With dead ends: 51 [2024-11-23 23:45:11,912 INFO L226 Difference]: Without dead ends: 36 [2024-11-23 23:45:11,912 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:45:11,913 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 47 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:11,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 16 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:45:11,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-23 23:45:11,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 25. [2024-11-23 23:45:11,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 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) [2024-11-23 23:45:11,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-23 23:45:11,921 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 15 [2024-11-23 23:45:11,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:11,922 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-23 23:45:11,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2024-11-23 23:45:11,922 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-23 23:45:11,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-23 23:45:11,923 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:11,923 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:11,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:45:11,923 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:11,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:11,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1315781781, now seen corresponding path program 1 times [2024-11-23 23:45:11,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:11,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017909049] [2024-11-23 23:45:11,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:11,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:13,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:45:13,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:13,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017909049] [2024-11-23 23:45:13,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017909049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:45:13,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390722805] [2024-11-23 23:45:13,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:13,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:45:13,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb779ace-e42c-46d1-a811-af3c6433d864/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:45:13,048 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb779ace-e42c-46d1-a811-af3c6433d864/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:45:13,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb779ace-e42c-46d1-a811-af3c6433d864/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:45:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:13,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 23:45:13,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:45:13,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-23 23:45:13,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-23 23:45:13,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-23 23:45:13,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:45:13,587 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:45:13,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-23 23:45:13,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2024-11-23 23:45:13,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:45:13,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390722805] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:45:13,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:45:13,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-23 23:45:13,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294574643] [2024-11-23 23:45:13,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:45:13,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 23:45:13,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:13,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 23:45:13,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:45:13,855 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 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) [2024-11-23 23:45:14,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:14,689 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2024-11-23 23:45:14,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:45:14,690 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 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 23 [2024-11-23 23:45:14,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:14,691 INFO L225 Difference]: With dead ends: 67 [2024-11-23 23:45:14,691 INFO L226 Difference]: Without dead ends: 56 [2024-11-23 23:45:14,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=142, Invalid=560, Unknown=0, NotChecked=0, Total=702 [2024-11-23 23:45:14,693 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 102 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:14,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 106 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:45:14,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-23 23:45:14,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2024-11-23 23:45:14,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 36 states have internal predecessors, (44), 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) [2024-11-23 23:45:14,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2024-11-23 23:45:14,713 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 23 [2024-11-23 23:45:14,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:14,713 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2024-11-23 23:45:14,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 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) [2024-11-23 23:45:14,714 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2024-11-23 23:45:14,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-23 23:45:14,714 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:14,715 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:14,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb779ace-e42c-46d1-a811-af3c6433d864/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:45:14,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb779ace-e42c-46d1-a811-af3c6433d864/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:45:14,915 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:14,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:14,916 INFO L85 PathProgramCache]: Analyzing trace with hash 506435155, now seen corresponding path program 1 times [2024-11-23 23:45:14,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:14,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187476992] [2024-11-23 23:45:14,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:14,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 23:45:14,958 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 23:45:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 23:45:15,019 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 23:45:15,019 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-23 23:45:15,021 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-23 23:45:15,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:45:15,028 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-23 23:45:15,072 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-23 23:45:15,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 11:45:15 BoogieIcfgContainer [2024-11-23 23:45:15,076 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-23 23:45:15,079 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 23:45:15,079 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 23:45:15,079 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 23:45:15,080 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:45:11" (3/4) ... [2024-11-23 23:45:15,083 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-23 23:45:15,159 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 15. [2024-11-23 23:45:15,238 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb779ace-e42c-46d1-a811-af3c6433d864/bin/uautomizer-verify-LYvppIcaGC/witness.graphml [2024-11-23 23:45:15,239 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb779ace-e42c-46d1-a811-af3c6433d864/bin/uautomizer-verify-LYvppIcaGC/witness.yml [2024-11-23 23:45:15,239 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 23:45:15,241 INFO L158 Benchmark]: Toolchain (without parser) took 5071.52ms. Allocated memory is still 142.6MB. Free memory was 119.3MB in the beginning and 96.7MB in the end (delta: 22.6MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2024-11-23 23:45:15,242 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 142.6MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 23:45:15,242 INFO L158 Benchmark]: CACSL2BoogieTranslator took 337.69ms. Allocated memory is still 142.6MB. Free memory was 119.1MB in the beginning and 107.3MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-23 23:45:15,243 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.15ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 105.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 23:45:15,243 INFO L158 Benchmark]: Boogie Preprocessor took 66.06ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 104.3MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-23 23:45:15,244 INFO L158 Benchmark]: RCFGBuilder took 397.06ms. Allocated memory is still 142.6MB. Free memory was 104.3MB in the beginning and 92.3MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-23 23:45:15,245 INFO L158 Benchmark]: TraceAbstraction took 4037.94ms. Allocated memory is still 142.6MB. Free memory was 91.5MB in the beginning and 101.6MB in the end (delta: -10.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 23:45:15,245 INFO L158 Benchmark]: Witness Printer took 160.61ms. Allocated memory is still 142.6MB. Free memory was 101.6MB in the beginning and 96.7MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-23 23:45:15,247 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 142.6MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 337.69ms. Allocated memory is still 142.6MB. Free memory was 119.1MB in the beginning and 107.3MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.15ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 105.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 66.06ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 104.3MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 397.06ms. Allocated memory is still 142.6MB. Free memory was 104.3MB in the beginning and 92.3MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4037.94ms. Allocated memory is still 142.6MB. Free memory was 91.5MB in the beginning and 101.6MB in the end (delta: -10.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 160.61ms. Allocated memory is still 142.6MB. Free memory was 101.6MB in the beginning and 96.7MB in the end (delta: 4.9MB). 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: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) VAL [N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 VAL [N=1, a={-1:0}, i=0, sum={5:0}] [L32] COND TRUE i