./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1 --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 8639f60502701b783590428cddba5bf44f8c35f715b0b6bf93574efbde24283f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:23:22,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:23:22,800 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 12:23:22,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:23:22,804 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:23:22,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:23:22,828 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:23:22,828 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:23:22,828 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:23:22,829 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:23:22,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:23:22,829 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:23:22,829 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:23:22,829 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:23:22,829 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:23:22,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:23:22,830 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:23:22,830 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:23:22,830 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:23:22,830 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:23:22,830 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:23:22,830 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:23:22,830 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:23:22,830 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:23:22,831 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:23:22,831 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:23:22,831 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:23:22,831 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:23:22,831 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:23:22,831 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:23:22,831 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:23:22,832 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:23:22,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:23:22,832 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:23:22,832 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:23:22,832 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:23:22,832 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:23:22,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:23:22,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:23:22,833 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:23:22,833 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:23:22,833 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:23:22,833 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:23:22,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:23:22,833 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:23:22,833 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:23:22,833 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:23:22,833 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:23:22,834 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_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1 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 -> 8639f60502701b783590428cddba5bf44f8c35f715b0b6bf93574efbde24283f [2024-12-02 12:23:23,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:23:23,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:23:23,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:23:23,074 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:23:23,074 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:23:23,076 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c [2024-12-02 12:23:25,974 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/data/b57bcb338/fc84ed541c9e4f2193f5e474d6d81eb3/FLAG6a5d56761 [2024-12-02 12:23:26,165 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:23:26,165 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c [2024-12-02 12:23:26,173 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/data/b57bcb338/fc84ed541c9e4f2193f5e474d6d81eb3/FLAG6a5d56761 [2024-12-02 12:23:26,188 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/data/b57bcb338/fc84ed541c9e4f2193f5e474d6d81eb3 [2024-12-02 12:23:26,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:23:26,192 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:23:26,193 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:23:26,193 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:23:26,197 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:23:26,198 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:23:26" (1/1) ... [2024-12-02 12:23:26,199 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41dc193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:26, skipping insertion in model container [2024-12-02 12:23:26,199 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:23:26" (1/1) ... [2024-12-02 12:23:26,216 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:23:26,347 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_6c8dcfc4-351c-453e-a8ab-6721da6967ca/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c[2334,2347] [2024-12-02 12:23:26,354 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_6c8dcfc4-351c-453e-a8ab-6721da6967ca/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c[3766,3779] [2024-12-02 12:23:26,358 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_6c8dcfc4-351c-453e-a8ab-6721da6967ca/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c[5193,5206] [2024-12-02 12:23:26,364 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_6c8dcfc4-351c-453e-a8ab-6721da6967ca/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c[7003,7016] [2024-12-02 12:23:26,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:23:26,375 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:23:26,392 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_6c8dcfc4-351c-453e-a8ab-6721da6967ca/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c[2334,2347] [2024-12-02 12:23:26,397 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_6c8dcfc4-351c-453e-a8ab-6721da6967ca/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c[3766,3779] [2024-12-02 12:23:26,400 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_6c8dcfc4-351c-453e-a8ab-6721da6967ca/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c[5193,5206] [2024-12-02 12:23:26,404 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_6c8dcfc4-351c-453e-a8ab-6721da6967ca/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i.v+lhb-reducer.c[7003,7016] [2024-12-02 12:23:26,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:23:26,420 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:23:26,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:26 WrapperNode [2024-12-02 12:23:26,421 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:23:26,422 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:23:26,422 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:23:26,422 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:23:26,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:26" (1/1) ... [2024-12-02 12:23:26,434 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:26" (1/1) ... [2024-12-02 12:23:26,457 INFO L138 Inliner]: procedures = 16, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 163 [2024-12-02 12:23:26,457 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:23:26,458 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:23:26,458 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:23:26,458 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:23:26,466 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:26" (1/1) ... [2024-12-02 12:23:26,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:26" (1/1) ... [2024-12-02 12:23:26,468 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:26" (1/1) ... [2024-12-02 12:23:26,482 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [5, 2, 7]. 50 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [1, 2, 0]. The 2 writes are split as follows [1, 0, 1]. [2024-12-02 12:23:26,482 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:26" (1/1) ... [2024-12-02 12:23:26,483 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:26" (1/1) ... [2024-12-02 12:23:26,487 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:26" (1/1) ... [2024-12-02 12:23:26,488 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:26" (1/1) ... [2024-12-02 12:23:26,491 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:26" (1/1) ... [2024-12-02 12:23:26,493 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:26" (1/1) ... [2024-12-02 12:23:26,494 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:26" (1/1) ... [2024-12-02 12:23:26,496 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:23:26,497 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:23:26,497 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:23:26,497 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:23:26,498 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:26" (1/1) ... [2024-12-02 12:23:26,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:23:26,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:23:26,528 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:23:26,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:23:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:23:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:23:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 12:23:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 12:23:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 12:23:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 12:23:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 12:23:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 12:23:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_20_to_22_0 [2024-12-02 12:23:26,555 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_20_to_22_0 [2024-12-02 12:23:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:23:26,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:23:26,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 12:23:26,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 12:23:26,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 12:23:26,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 12:23:26,632 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:23:26,633 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:23:26,886 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-12-02 12:23:26,886 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:23:26,897 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:23:26,897 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 12:23:26,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:23:26 BoogieIcfgContainer [2024-12-02 12:23:26,898 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:23:26,901 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:23:26,901 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:23:26,906 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:23:26,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:23:26" (1/3) ... [2024-12-02 12:23:26,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1256e854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:23:26, skipping insertion in model container [2024-12-02 12:23:26,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:26" (2/3) ... [2024-12-02 12:23:26,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1256e854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:23:26, skipping insertion in model container [2024-12-02 12:23:26,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:23:26" (3/3) ... [2024-12-02 12:23:26,909 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_simple_array_index_value_4.i.v+lhb-reducer.c [2024-12-02 12:23:26,929 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:23:26,931 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_simple_array_index_value_4.i.v+lhb-reducer.c that has 2 procedures, 44 locations, 1 initial locations, 0 loop locations, and 4 error locations. [2024-12-02 12:23:26,989 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:23:27,003 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;@b6d0344, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:23:27,003 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-12-02 12:23:27,008 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 41 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 12:23:27,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-12-02 12:23:27,015 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:23:27,015 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:23:27,016 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-12-02 12:23:27,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:23:27,021 INFO L85 PathProgramCache]: Analyzing trace with hash 245392210, now seen corresponding path program 1 times [2024-12-02 12:23:27,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:23:27,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313420840] [2024-12-02 12:23:27,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:23:27,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:23:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:23:27,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:23:27,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:23:27,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313420840] [2024-12-02 12:23:27,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313420840] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:23:27,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:23:27,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:23:27,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544921136] [2024-12-02 12:23:27,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:23:27,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:23:27,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:23:27,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:23:27,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:23:27,580 INFO L87 Difference]: Start difference. First operand has 44 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 41 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 12:23:27,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:23:27,672 INFO L93 Difference]: Finished difference Result 82 states and 117 transitions. [2024-12-02 12:23:27,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:23:27,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-12-02 12:23:27,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:23:27,679 INFO L225 Difference]: With dead ends: 82 [2024-12-02 12:23:27,679 INFO L226 Difference]: Without dead ends: 42 [2024-12-02 12:23:27,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:23:27,685 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 3 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:23:27,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 258 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:23:27,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-12-02 12:23:27,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-12-02 12:23:27,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 38 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 12:23:27,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2024-12-02 12:23:27,721 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 15 [2024-12-02 12:23:27,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:23:27,722 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2024-12-02 12:23:27,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 12:23:27,722 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2024-12-02 12:23:27,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-02 12:23:27,724 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:23:27,724 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:23:27,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 12:23:27,724 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-12-02 12:23:27,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:23:27,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1384751958, now seen corresponding path program 1 times [2024-12-02 12:23:27,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:23:27,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578551131] [2024-12-02 12:23:27,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:23:27,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:23:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:23:27,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 12:23:27,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:23:27,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578551131] [2024-12-02 12:23:27,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578551131] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:23:27,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:23:27,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:23:27,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909648361] [2024-12-02 12:23:27,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:23:27,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:23:27,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:23:27,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:23:27,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:23:27,850 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 12:23:27,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:23:27,859 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2024-12-02 12:23:27,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:23:27,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-12-02 12:23:27,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:23:27,860 INFO L225 Difference]: With dead ends: 49 [2024-12-02 12:23:27,860 INFO L226 Difference]: Without dead ends: 39 [2024-12-02 12:23:27,861 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 [2024-12-02 12:23:27,862 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 11 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:23:27,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 68 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:23:27,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-12-02 12:23:27,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2024-12-02 12:23:27,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.3) internal successors, (39), 33 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 12:23:27,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2024-12-02 12:23:27,868 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 20 [2024-12-02 12:23:27,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:23:27,868 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2024-12-02 12:23:27,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 12:23:27,868 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2024-12-02 12:23:27,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-02 12:23:27,869 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:23:27,869 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:23:27,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 12:23:27,869 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-12-02 12:23:27,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:23:27,870 INFO L85 PathProgramCache]: Analyzing trace with hash 2079261993, now seen corresponding path program 1 times [2024-12-02 12:23:27,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:23:27,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881215305] [2024-12-02 12:23:27,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:23:27,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:23:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:23:27,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 12:23:27,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:23:27,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881215305] [2024-12-02 12:23:27,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881215305] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:23:27,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:23:27,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:23:27,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894834106] [2024-12-02 12:23:27,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:23:27,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:23:27,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:23:27,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:23:27,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:23:27,920 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 12:23:27,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:23:27,966 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2024-12-02 12:23:27,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:23:27,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-12-02 12:23:27,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:23:27,968 INFO L225 Difference]: With dead ends: 65 [2024-12-02 12:23:27,968 INFO L226 Difference]: Without dead ends: 44 [2024-12-02 12:23:27,968 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 [2024-12-02 12:23:27,969 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 16 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:23:27,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 56 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:23:27,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-12-02 12:23:27,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2024-12-02 12:23:27,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 33 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 12:23:27,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-12-02 12:23:27,975 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 21 [2024-12-02 12:23:27,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:23:27,976 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-12-02 12:23:27,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 12:23:27,976 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-12-02 12:23:27,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-02 12:23:27,977 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:23:27,977 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:23:27,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:23:27,977 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-12-02 12:23:27,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:23:27,978 INFO L85 PathProgramCache]: Analyzing trace with hash 2009819172, now seen corresponding path program 1 times [2024-12-02 12:23:27,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:23:27,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004111466] [2024-12-02 12:23:27,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:23:27,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:23:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:23:28,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 12:23:28,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:23:28,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004111466] [2024-12-02 12:23:28,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004111466] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:23:28,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:23:28,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:23:28,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395942764] [2024-12-02 12:23:28,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:23:28,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:23:28,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:23:28,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:23:28,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:23:28,074 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 12:23:28,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:23:28,105 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2024-12-02 12:23:28,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:23:28,105 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-12-02 12:23:28,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:23:28,106 INFO L225 Difference]: With dead ends: 41 [2024-12-02 12:23:28,106 INFO L226 Difference]: Without dead ends: 39 [2024-12-02 12:23:28,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:23:28,108 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 1 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:23:28,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 111 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:23:28,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-12-02 12:23:28,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-12-02 12:23:28,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.25) internal successors, (40), 35 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 12:23:28,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2024-12-02 12:23:28,114 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 21 [2024-12-02 12:23:28,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:23:28,114 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2024-12-02 12:23:28,114 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 12:23:28,115 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2024-12-02 12:23:28,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-02 12:23:28,115 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:23:28,115 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:23:28,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 12:23:28,116 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-12-02 12:23:28,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:23:28,116 INFO L85 PathProgramCache]: Analyzing trace with hash -2057199396, now seen corresponding path program 1 times [2024-12-02 12:23:28,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:23:28,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41207688] [2024-12-02 12:23:28,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:23:28,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:23:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:23:28,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 12:23:28,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:23:28,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41207688] [2024-12-02 12:23:28,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41207688] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:23:28,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:23:28,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:23:28,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651601780] [2024-12-02 12:23:28,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:23:28,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:23:28,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:23:28,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:23:28,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:23:28,157 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 12:23:28,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:23:28,195 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2024-12-02 12:23:28,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:23:28,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-12-02 12:23:28,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:23:28,197 INFO L225 Difference]: With dead ends: 61 [2024-12-02 12:23:28,197 INFO L226 Difference]: Without dead ends: 40 [2024-12-02 12:23:28,197 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 [2024-12-02 12:23:28,198 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:23:28,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 54 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:23:28,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-12-02 12:23:28,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2024-12-02 12:23:28,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 30 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 12:23:28,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-12-02 12:23:28,204 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 22 [2024-12-02 12:23:28,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:23:28,205 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-12-02 12:23:28,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 12:23:28,205 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-12-02 12:23:28,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-12-02 12:23:28,206 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:23:28,206 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:23:28,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 12:23:28,207 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-12-02 12:23:28,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:23:28,207 INFO L85 PathProgramCache]: Analyzing trace with hash 529320676, now seen corresponding path program 1 times [2024-12-02 12:23:28,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:23:28,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96617580] [2024-12-02 12:23:28,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:23:28,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:23:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:23:28,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:23:28,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:23:28,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96617580] [2024-12-02 12:23:28,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96617580] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:23:28,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281038826] [2024-12-02 12:23:28,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:23:28,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:23:28,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:23:28,785 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:23:28,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:23:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:23:28,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 12:23:28,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:23:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:23:29,192 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:23:29,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:23:29,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281038826] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:23:29,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:23:29,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 22 [2024-12-02 12:23:29,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110561938] [2024-12-02 12:23:29,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:23:29,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 12:23:29,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:23:29,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 12:23:29,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2024-12-02 12:23:29,770 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 22 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 19 states have internal predecessors, (36), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-12-02 12:23:30,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:23:30,016 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2024-12-02 12:23:30,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 12:23:30,017 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 19 states have internal predecessors, (36), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 27 [2024-12-02 12:23:30,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:23:30,017 INFO L225 Difference]: With dead ends: 62 [2024-12-02 12:23:30,018 INFO L226 Difference]: Without dead ends: 38 [2024-12-02 12:23:30,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2024-12-02 12:23:30,019 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:23:30,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 429 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:23:30,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-12-02 12:23:30,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-12-02 12:23:30,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.2) internal successors, (36), 32 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 12:23:30,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-12-02 12:23:30,026 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 27 [2024-12-02 12:23:30,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:23:30,026 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-12-02 12:23:30,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 19 states have internal predecessors, (36), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-12-02 12:23:30,026 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-12-02 12:23:30,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-12-02 12:23:30,027 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:23:30,027 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:23:30,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:23:30,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:23:30,228 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-12-02 12:23:30,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:23:30,229 INFO L85 PathProgramCache]: Analyzing trace with hash 761789624, now seen corresponding path program 2 times [2024-12-02 12:23:30,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:23:30,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892351993] [2024-12-02 12:23:30,229 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:23:30,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:23:30,298 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 12:23:30,299 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:23:31,849 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 12:23:31,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:23:31,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892351993] [2024-12-02 12:23:31,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892351993] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:23:31,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:23:31,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 12:23:31,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299873467] [2024-12-02 12:23:31,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:23:31,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 12:23:31,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:23:31,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 12:23:31,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:23:31,851 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 12:23:32,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:23:32,000 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2024-12-02 12:23:32,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 12:23:32,000 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2024-12-02 12:23:32,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:23:32,001 INFO L225 Difference]: With dead ends: 56 [2024-12-02 12:23:32,001 INFO L226 Difference]: Without dead ends: 40 [2024-12-02 12:23:32,001 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:23:32,002 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 41 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:23:32,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 69 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:23:32,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-12-02 12:23:32,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2024-12-02 12:23:32,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 12:23:32,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2024-12-02 12:23:32,007 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 37 [2024-12-02 12:23:32,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:23:32,008 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2024-12-02 12:23:32,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 12:23:32,008 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2024-12-02 12:23:32,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 12:23:32,009 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:23:32,009 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:23:32,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 12:23:32,009 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-12-02 12:23:32,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:23:32,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1460190743, now seen corresponding path program 1 times [2024-12-02 12:23:32,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:23:32,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689294611] [2024-12-02 12:23:32,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:23:32,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:23:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:23:32,093 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 12:23:32,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:23:32,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689294611] [2024-12-02 12:23:32,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689294611] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:23:32,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:23:32,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:23:32,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306073932] [2024-12-02 12:23:32,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:23:32,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:23:32,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:23:32,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:23:32,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:23:32,095 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 12:23:32,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:23:32,122 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2024-12-02 12:23:32,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:23:32,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2024-12-02 12:23:32,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:23:32,123 INFO L225 Difference]: With dead ends: 39 [2024-12-02 12:23:32,123 INFO L226 Difference]: Without dead ends: 37 [2024-12-02 12:23:32,123 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:23:32,124 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:23:32,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 132 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:23:32,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-12-02 12:23:32,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-12-02 12:23:32,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.1) internal successors, (33), 31 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 12:23:32,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2024-12-02 12:23:32,128 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 38 [2024-12-02 12:23:32,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:23:32,129 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2024-12-02 12:23:32,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 12:23:32,129 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2024-12-02 12:23:32,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 12:23:32,130 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:23:32,130 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:23:32,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 12:23:32,130 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-12-02 12:23:32,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:23:32,130 INFO L85 PathProgramCache]: Analyzing trace with hash -128585869, now seen corresponding path program 1 times [2024-12-02 12:23:32,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:23:32,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103234357] [2024-12-02 12:23:32,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:23:32,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:23:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:23:32,775 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 12:23:32,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:23:32,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103234357] [2024-12-02 12:23:32,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103234357] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:23:32,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210035532] [2024-12-02 12:23:32,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:23:32,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:23:32,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:23:32,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:23:32,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:23:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:23:32,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 12:23:32,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:23:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 12:23:32,965 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:23:33,104 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 12:23:33,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210035532] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:23:33,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:23:33,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 17 [2024-12-02 12:23:33,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409560787] [2024-12-02 12:23:33,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:23:33,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 12:23:33,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:23:33,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 12:23:33,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2024-12-02 12:23:33,107 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 17 states, 14 states have (on average 4.5) internal successors, (63), 16 states have internal predecessors, (63), 4 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-12-02 12:23:33,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:23:33,414 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2024-12-02 12:23:33,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 12:23:33,415 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 4.5) internal successors, (63), 16 states have internal predecessors, (63), 4 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 40 [2024-12-02 12:23:33,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:23:33,415 INFO L225 Difference]: With dead ends: 61 [2024-12-02 12:23:33,415 INFO L226 Difference]: Without dead ends: 0 [2024-12-02 12:23:33,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2024-12-02 12:23:33,416 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 17 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:23:33,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 156 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 12:23:33,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-12-02 12:23:33,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-12-02 12:23:33,417 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) [2024-12-02 12:23:33,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-12-02 12:23:33,417 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2024-12-02 12:23:33,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:23:33,418 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 12:23:33,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 4.5) internal successors, (63), 16 states have internal predecessors, (63), 4 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-12-02 12:23:33,418 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-12-02 12:23:33,418 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-02 12:23:33,420 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-12-02 12:23:33,420 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-12-02 12:23:33,420 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-12-02 12:23:33,421 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-12-02 12:23:33,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 12:23:33,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-12-02 12:23:33,623 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:23:33,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-12-02 12:23:33,650 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 12:23:33,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:23:33 BoogieIcfgContainer [2024-12-02 12:23:33,654 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 12:23:33,655 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 12:23:33,655 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 12:23:33,655 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 12:23:33,655 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:23:26" (3/4) ... [2024-12-02 12:23:33,657 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 12:23:33,660 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_20_to_22_0 [2024-12-02 12:23:33,664 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2024-12-02 12:23:33,664 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-12-02 12:23:33,665 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-12-02 12:23:33,665 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-02 12:23:33,743 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 12:23:33,744 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 12:23:33,744 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 12:23:33,745 INFO L158 Benchmark]: Toolchain (without parser) took 7552.81ms. Allocated memory was 117.4MB in the beginning and 184.5MB in the end (delta: 67.1MB). Free memory was 92.6MB in the beginning and 88.8MB in the end (delta: 3.8MB). Peak memory consumption was 73.2MB. Max. memory is 16.1GB. [2024-12-02 12:23:33,745 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 117.4MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:23:33,745 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.14ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 80.1MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 12:23:33,745 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.28ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 78.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:23:33,746 INFO L158 Benchmark]: Boogie Preprocessor took 38.50ms. Allocated memory is still 117.4MB. Free memory was 78.4MB in the beginning and 76.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:23:33,746 INFO L158 Benchmark]: RCFGBuilder took 400.99ms. Allocated memory is still 117.4MB. Free memory was 76.6MB in the beginning and 60.9MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 12:23:33,746 INFO L158 Benchmark]: TraceAbstraction took 6753.76ms. Allocated memory was 117.4MB in the beginning and 184.5MB in the end (delta: 67.1MB). Free memory was 60.4MB in the beginning and 93.1MB in the end (delta: -32.7MB). Peak memory consumption was 39.6MB. Max. memory is 16.1GB. [2024-12-02 12:23:33,746 INFO L158 Benchmark]: Witness Printer took 88.98ms. Allocated memory is still 184.5MB. Free memory was 93.1MB in the beginning and 88.8MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 12:23:33,748 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 117.4MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 228.14ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 80.1MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.28ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 78.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.50ms. Allocated memory is still 117.4MB. Free memory was 78.4MB in the beginning and 76.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 400.99ms. Allocated memory is still 117.4MB. Free memory was 76.6MB in the beginning and 60.9MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6753.76ms. Allocated memory was 117.4MB in the beginning and 184.5MB in the end (delta: 67.1MB). Free memory was 60.4MB in the beginning and 93.1MB in the end (delta: -32.7MB). Peak memory consumption was 39.6MB. Max. memory is 16.1GB. * Witness Printer took 88.98ms. Allocated memory is still 184.5MB. Free memory was 93.1MB in the beginning and 88.8MB in the end (delta: 4.3MB). 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 - PositiveResult [Line: 88]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 125]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 167]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 233]: 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 2 procedures, 44 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 6.7s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 105 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 105 mSDsluCounter, 1333 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1024 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 455 IncrementalHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 309 mSDtfsCounter, 455 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 210 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 308 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 362 ConstructedInterpolants, 0 QuantifiedInterpolants, 2521 SizeOfPredicates, 7 NumberOfNonLiveVariables, 392 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 142/169 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-12-02 12:23:33,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8dcfc4-351c-453e-a8ab-6721da6967ca/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE