./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/head-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/head-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0e88082971628d59ef5682895c2d853cfcbbf7f0162214aa0affb543a2978ac5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 02:05:23,684 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 02:05:23,789 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-24 02:05:23,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 02:05:23,797 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 02:05:23,837 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 02:05:23,841 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 02:05:23,842 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 02:05:23,842 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 02:05:23,843 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 02:05:23,844 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 02:05:23,845 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 02:05:23,845 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 02:05:23,845 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 02:05:23,845 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 02:05:23,846 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 02:05:23,846 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 02:05:23,847 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 02:05:23,847 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-24 02:05:23,847 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-24 02:05:23,847 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-24 02:05:23,847 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 02:05:23,847 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 02:05:23,847 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 02:05:23,848 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 02:05:23,848 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 02:05:23,848 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 02:05:23,848 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:05:23,848 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:05:23,848 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:05:23,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:05:23,849 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 02:05:23,849 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:05:23,850 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:05:23,850 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:05:23,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:05:23,850 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 02:05:23,850 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 02:05:23,851 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 02:05:23,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 02:05:23,851 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 02:05:23,851 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 02:05:23,851 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 02:05:23,851 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 02:05:23,851 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_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e88082971628d59ef5682895c2d853cfcbbf7f0162214aa0affb543a2978ac5 [2024-11-24 02:05:24,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 02:05:24,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 02:05:24,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 02:05:24,227 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 02:05:24,228 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 02:05:24,229 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/busybox-1.22.0/head-1.i [2024-11-24 02:05:27,847 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/data/e84ec1e25/6961e140b8e742d28183c5551f3b48f0/FLAG86d1c2294 [2024-11-24 02:05:28,484 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 02:05:28,485 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/sv-benchmarks/c/busybox-1.22.0/head-1.i [2024-11-24 02:05:28,528 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/data/e84ec1e25/6961e140b8e742d28183c5551f3b48f0/FLAG86d1c2294 [2024-11-24 02:05:28,551 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/data/e84ec1e25/6961e140b8e742d28183c5551f3b48f0 [2024-11-24 02:05:28,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 02:05:28,555 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 02:05:28,559 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 02:05:28,559 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 02:05:28,564 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 02:05:28,565 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:05:28" (1/1) ... [2024-11-24 02:05:28,566 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aa0dc7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:28, skipping insertion in model container [2024-11-24 02:05:28,566 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:05:28" (1/1) ... [2024-11-24 02:05:28,688 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 02:05:30,144 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,151 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,154 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,159 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,160 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,162 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,166 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,167 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,168 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,169 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,174 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,176 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,179 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,182 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,184 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,185 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,186 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,187 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,188 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,190 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,193 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,196 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,204 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,209 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,210 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,216 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,227 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,235 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,243 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,247 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,254 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,258 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,259 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,265 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,269 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,271 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,272 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,301 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,318 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,340 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 02:05:30,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:05:30,415 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 02:05:30,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:05:30,872 WARN L1212 FunctionHandler]: The following functions are not defined or handled internally: vasprintf [2024-11-24 02:05:30,882 INFO L204 MainTranslator]: Completed translation [2024-11-24 02:05:30,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:30 WrapperNode [2024-11-24 02:05:30,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 02:05:30,884 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 02:05:30,884 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 02:05:30,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 02:05:30,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:30" (1/1) ... [2024-11-24 02:05:30,967 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:30" (1/1) ... [2024-11-24 02:05:31,105 INFO L138 Inliner]: procedures = 581, calls = 697, calls flagged for inlining = 30, calls inlined = 28, statements flattened = 1407 [2024-11-24 02:05:31,106 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 02:05:31,107 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 02:05:31,107 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 02:05:31,107 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 02:05:31,119 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:30" (1/1) ... [2024-11-24 02:05:31,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:30" (1/1) ... [2024-11-24 02:05:31,145 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:30" (1/1) ... [2024-11-24 02:05:31,222 INFO L175 MemorySlicer]: Split 566 memory accesses to 19 slices as follows [2, 3, 3, 2, 32, 15, 9, 18, 7, 4, 24, 10, 355, 1, 20, 47, 3, 2, 9]. 63 percent of accesses are in the largest equivalence class. The 379 initializations are split as follows [2, 0, 3, 2, 2, 0, 1, 0, 0, 1, 0, 7, 355, 0, 4, 2, 0, 0, 0]. The 120 writes are split as follows [0, 0, 0, 0, 21, 1, 4, 4, 7, 1, 21, 0, 0, 1, 15, 35, 3, 1, 6]. [2024-11-24 02:05:31,223 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:30" (1/1) ... [2024-11-24 02:05:31,223 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:30" (1/1) ... [2024-11-24 02:05:31,337 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:30" (1/1) ... [2024-11-24 02:05:31,343 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:30" (1/1) ... [2024-11-24 02:05:31,354 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:30" (1/1) ... [2024-11-24 02:05:31,410 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:30" (1/1) ... [2024-11-24 02:05:31,422 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:30" (1/1) ... [2024-11-24 02:05:31,453 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 02:05:31,453 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 02:05:31,454 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 02:05:31,454 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 02:05:31,459 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:30" (1/1) ... [2024-11-24 02:05:31,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:05:31,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:31,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 02:05:31,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 02:05:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc#0 [2024-11-24 02:05:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc#1 [2024-11-24 02:05:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc#2 [2024-11-24 02:05:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc#3 [2024-11-24 02:05:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc#4 [2024-11-24 02:05:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc#5 [2024-11-24 02:05:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc#6 [2024-11-24 02:05:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc#7 [2024-11-24 02:05:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc#8 [2024-11-24 02:05:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc#9 [2024-11-24 02:05:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc#10 [2024-11-24 02:05:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc#11 [2024-11-24 02:05:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc#12 [2024-11-24 02:05:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc#13 [2024-11-24 02:05:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc#14 [2024-11-24 02:05:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc#15 [2024-11-24 02:05:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc#16 [2024-11-24 02:05:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc#17 [2024-11-24 02:05:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc#18 [2024-11-24 02:05:31,544 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc#0 [2024-11-24 02:05:31,544 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc#1 [2024-11-24 02:05:31,544 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc#2 [2024-11-24 02:05:31,544 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc#3 [2024-11-24 02:05:31,544 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc#4 [2024-11-24 02:05:31,544 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc#5 [2024-11-24 02:05:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc#6 [2024-11-24 02:05:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc#7 [2024-11-24 02:05:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc#8 [2024-11-24 02:05:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc#9 [2024-11-24 02:05:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc#10 [2024-11-24 02:05:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc#11 [2024-11-24 02:05:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc#12 [2024-11-24 02:05:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc#13 [2024-11-24 02:05:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc#14 [2024-11-24 02:05:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc#15 [2024-11-24 02:05:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc#16 [2024-11-24 02:05:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc#17 [2024-11-24 02:05:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc#18 [2024-11-24 02:05:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2024-11-24 02:05:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure _IO_getc [2024-11-24 02:05:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2024-11-24 02:05:31,546 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2024-11-24 02:05:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 02:05:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2024-11-24 02:05:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2024-11-24 02:05:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2024-11-24 02:05:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2024-11-24 02:05:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2024-11-24 02:05:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2024-11-24 02:05:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2024-11-24 02:05:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#7 [2024-11-24 02:05:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#8 [2024-11-24 02:05:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#9 [2024-11-24 02:05:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#10 [2024-11-24 02:05:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#11 [2024-11-24 02:05:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#12 [2024-11-24 02:05:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#13 [2024-11-24 02:05:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#14 [2024-11-24 02:05:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#15 [2024-11-24 02:05:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#16 [2024-11-24 02:05:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#17 [2024-11-24 02:05:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#18 [2024-11-24 02:05:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2024-11-24 02:05:31,549 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2024-11-24 02:05:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-24 02:05:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-24 02:05:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-24 02:05:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-24 02:05:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-24 02:05:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-24 02:05:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-24 02:05:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-24 02:05:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-24 02:05:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-11-24 02:05:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2024-11-24 02:05:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2024-11-24 02:05:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#12 [2024-11-24 02:05:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#13 [2024-11-24 02:05:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#14 [2024-11-24 02:05:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#15 [2024-11-24 02:05:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#16 [2024-11-24 02:05:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#17 [2024-11-24 02:05:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#18 [2024-11-24 02:05:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 02:05:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 02:05:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 02:05:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-24 02:05:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-24 02:05:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-24 02:05:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-24 02:05:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-24 02:05:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-24 02:05:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-24 02:05:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-24 02:05:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-24 02:05:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-24 02:05:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-24 02:05:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-24 02:05:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-24 02:05:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2024-11-24 02:05:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2024-11-24 02:05:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#18 [2024-11-24 02:05:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 02:05:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 02:05:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-24 02:05:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-24 02:05:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-24 02:05:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-24 02:05:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-24 02:05:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-24 02:05:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-24 02:05:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-24 02:05:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-24 02:05:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-24 02:05:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-24 02:05:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-24 02:05:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-24 02:05:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-24 02:05:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-11-24 02:05:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2024-11-24 02:05:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#16 [2024-11-24 02:05:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#17 [2024-11-24 02:05:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#18 [2024-11-24 02:05:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 02:05:31,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 02:05:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy#0 [2024-11-24 02:05:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy#1 [2024-11-24 02:05:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy#2 [2024-11-24 02:05:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy#3 [2024-11-24 02:05:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy#4 [2024-11-24 02:05:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy#5 [2024-11-24 02:05:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy#6 [2024-11-24 02:05:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy#7 [2024-11-24 02:05:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy#8 [2024-11-24 02:05:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy#9 [2024-11-24 02:05:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy#10 [2024-11-24 02:05:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy#11 [2024-11-24 02:05:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy#12 [2024-11-24 02:05:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy#13 [2024-11-24 02:05:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy#14 [2024-11-24 02:05:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy#15 [2024-11-24 02:05:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy#16 [2024-11-24 02:05:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy#17 [2024-11-24 02:05:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy#18 [2024-11-24 02:05:31,558 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy#0 [2024-11-24 02:05:31,558 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy#1 [2024-11-24 02:05:31,558 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy#2 [2024-11-24 02:05:31,558 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy#3 [2024-11-24 02:05:31,558 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy#4 [2024-11-24 02:05:31,558 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy#5 [2024-11-24 02:05:31,558 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy#6 [2024-11-24 02:05:31,558 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy#7 [2024-11-24 02:05:31,558 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy#8 [2024-11-24 02:05:31,558 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy#9 [2024-11-24 02:05:31,558 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy#10 [2024-11-24 02:05:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy#11 [2024-11-24 02:05:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy#12 [2024-11-24 02:05:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy#13 [2024-11-24 02:05:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy#14 [2024-11-24 02:05:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy#15 [2024-11-24 02:05:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy#16 [2024-11-24 02:05:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy#17 [2024-11-24 02:05:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy#18 [2024-11-24 02:05:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2024-11-24 02:05:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2024-11-24 02:05:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure getopt [2024-11-24 02:05:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure getopt [2024-11-24 02:05:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2024-11-24 02:05:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2024-11-24 02:05:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2024-11-24 02:05:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2024-11-24 02:05:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2024-11-24 02:05:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2024-11-24 02:05:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2024-11-24 02:05:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#7 [2024-11-24 02:05:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#8 [2024-11-24 02:05:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#9 [2024-11-24 02:05:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#10 [2024-11-24 02:05:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#11 [2024-11-24 02:05:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#12 [2024-11-24 02:05:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#13 [2024-11-24 02:05:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#14 [2024-11-24 02:05:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#15 [2024-11-24 02:05:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#16 [2024-11-24 02:05:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#17 [2024-11-24 02:05:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#18 [2024-11-24 02:05:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-24 02:05:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-24 02:05:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-24 02:05:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-24 02:05:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-24 02:05:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-24 02:05:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-24 02:05:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-24 02:05:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-24 02:05:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2024-11-24 02:05:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#10 [2024-11-24 02:05:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#11 [2024-11-24 02:05:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#12 [2024-11-24 02:05:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#13 [2024-11-24 02:05:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#14 [2024-11-24 02:05:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#15 [2024-11-24 02:05:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#16 [2024-11-24 02:05:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#17 [2024-11-24 02:05:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#18 [2024-11-24 02:05:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2024-11-24 02:05:31,565 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2024-11-24 02:05:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 02:05:31,566 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 02:05:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 02:05:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-24 02:05:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-24 02:05:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-24 02:05:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-24 02:05:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-24 02:05:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-24 02:05:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-24 02:05:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-24 02:05:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-24 02:05:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-24 02:05:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-24 02:05:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-24 02:05:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-24 02:05:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-24 02:05:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-11-24 02:05:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2024-11-24 02:05:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#16 [2024-11-24 02:05:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#17 [2024-11-24 02:05:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#18 [2024-11-24 02:05:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 02:05:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 02:05:31,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 02:05:31,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-24 02:05:31,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-24 02:05:31,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-24 02:05:31,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-24 02:05:31,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-24 02:05:31,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-24 02:05:31,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-24 02:05:31,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-24 02:05:31,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-24 02:05:31,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-24 02:05:31,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-24 02:05:31,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-24 02:05:31,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-24 02:05:31,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2024-11-24 02:05:31,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2024-11-24 02:05:31,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#18 [2024-11-24 02:05:31,570 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc_fgets [2024-11-24 02:05:31,570 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc_fgets [2024-11-24 02:05:31,570 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2024-11-24 02:05:31,570 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2024-11-24 02:05:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 02:05:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 02:05:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 02:05:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 02:05:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 02:05:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-24 02:05:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-24 02:05:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-24 02:05:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-24 02:05:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-24 02:05:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-24 02:05:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-24 02:05:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-24 02:05:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-24 02:05:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-24 02:05:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-24 02:05:31,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-24 02:05:31,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-24 02:05:31,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-24 02:05:32,424 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 02:05:32,427 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 02:05:41,712 INFO L? ?]: Removed 964 outVars from TransFormulas that were not future-live. [2024-11-24 02:05:41,712 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 02:05:41,747 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 02:05:41,748 INFO L312 CfgBuilder]: Removed 45 assume(true) statements. [2024-11-24 02:05:41,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:05:41 BoogieIcfgContainer [2024-11-24 02:05:41,748 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 02:05:41,751 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 02:05:41,752 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 02:05:41,758 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 02:05:41,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 02:05:28" (1/3) ... [2024-11-24 02:05:41,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb9b47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:05:41, skipping insertion in model container [2024-11-24 02:05:41,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:30" (2/3) ... [2024-11-24 02:05:41,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb9b47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:05:41, skipping insertion in model container [2024-11-24 02:05:41,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:05:41" (3/3) ... [2024-11-24 02:05:41,764 INFO L128 eAbstractionObserver]: Analyzing ICFG head-1.i [2024-11-24 02:05:41,784 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 02:05:41,788 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG head-1.i that has 48 procedures, 1063 locations, 1 initial locations, 41 loop locations, and 359 error locations. [2024-11-24 02:05:41,880 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 02:05:41,901 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=None, 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;@6054cfce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 02:05:41,901 INFO L334 AbstractCegarLoop]: Starting to check reachability of 359 error locations. [2024-11-24 02:05:41,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 724 states, 432 states have (on average 1.8796296296296295) internal successors, (812), 686 states have internal predecessors, (812), 29 states have call successors, (29), 12 states have call predecessors, (29), 12 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-24 02:05:41,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-24 02:05:41,916 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:41,916 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-24 02:05:41,917 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [getoptErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 356 more)] === [2024-11-24 02:05:41,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:41,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1098325, now seen corresponding path program 1 times [2024-11-24 02:05:41,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:41,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165197411] [2024-11-24 02:05:41,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:41,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:44,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:44,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:44,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165197411] [2024-11-24 02:05:44,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165197411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:44,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:05:44,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 02:05:44,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692675393] [2024-11-24 02:05:44,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:44,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:05:44,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:44,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:05:44,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:05:44,723 INFO L87 Difference]: Start difference. First operand has 724 states, 432 states have (on average 1.8796296296296295) internal successors, (812), 686 states have internal predecessors, (812), 29 states have call successors, (29), 12 states have call predecessors, (29), 12 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:48,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:05:50,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:50,493 INFO L93 Difference]: Finished difference Result 706 states and 840 transitions. [2024-11-24 02:05:50,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:05:50,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-24 02:05:50,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:50,544 INFO L225 Difference]: With dead ends: 706 [2024-11-24 02:05:50,544 INFO L226 Difference]: Without dead ends: 706 [2024-11-24 02:05:50,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:05:50,554 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 299 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:50,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 826 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 271 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2024-11-24 02:05:50,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2024-11-24 02:05:50,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 499. [2024-11-24 02:05:50,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 309 states have (on average 1.7605177993527508) internal successors, (544), 471 states have internal predecessors, (544), 23 states have call successors, (23), 10 states have call predecessors, (23), 9 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-24 02:05:50,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 585 transitions. [2024-11-24 02:05:50,691 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 585 transitions. Word has length 3 [2024-11-24 02:05:50,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:50,691 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 585 transitions. [2024-11-24 02:05:50,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:50,692 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 585 transitions. [2024-11-24 02:05:50,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-24 02:05:50,692 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:50,692 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-24 02:05:50,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 02:05:50,693 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [getoptErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 356 more)] === [2024-11-24 02:05:50,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:50,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1098326, now seen corresponding path program 1 times [2024-11-24 02:05:50,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:50,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846548398] [2024-11-24 02:05:50,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:50,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:52,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:52,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846548398] [2024-11-24 02:05:52,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846548398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:52,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:05:52,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 02:05:52,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722672170] [2024-11-24 02:05:52,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:52,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:05:52,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:52,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:05:52,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:05:52,517 INFO L87 Difference]: Start difference. First operand 499 states and 585 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:56,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:05:57,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:57,416 INFO L93 Difference]: Finished difference Result 498 states and 584 transitions. [2024-11-24 02:05:57,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:05:57,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-24 02:05:57,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:57,423 INFO L225 Difference]: With dead ends: 498 [2024-11-24 02:05:57,423 INFO L226 Difference]: Without dead ends: 498 [2024-11-24 02:05:57,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:05:57,424 INFO L435 NwaCegarLoop]: 577 mSDtfsCounter, 12 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:57,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 991 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2024-11-24 02:05:57,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2024-11-24 02:05:57,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 498. [2024-11-24 02:05:57,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 309 states have (on average 1.7572815533980584) internal successors, (543), 470 states have internal predecessors, (543), 23 states have call successors, (23), 10 states have call predecessors, (23), 9 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-24 02:05:57,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 584 transitions. [2024-11-24 02:05:57,470 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 584 transitions. Word has length 3 [2024-11-24 02:05:57,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:57,472 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 584 transitions. [2024-11-24 02:05:57,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:57,472 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 584 transitions. [2024-11-24 02:05:57,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-24 02:05:57,472 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:57,472 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:57,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 02:05:57,473 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [getoptErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 356 more)] === [2024-11-24 02:05:57,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:57,473 INFO L85 PathProgramCache]: Analyzing trace with hash 746311325, now seen corresponding path program 1 times [2024-11-24 02:05:57,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:57,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592645124] [2024-11-24 02:05:57,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:57,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:59,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:59,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:59,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592645124] [2024-11-24 02:05:59,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592645124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:59,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:05:59,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:05:59,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937015863] [2024-11-24 02:05:59,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:59,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:05:59,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:59,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:05:59,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:05:59,579 INFO L87 Difference]: Start difference. First operand 498 states and 584 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:03,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:06:07,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:06:09,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:09,060 INFO L93 Difference]: Finished difference Result 502 states and 588 transitions. [2024-11-24 02:06:09,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:06:09,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-24 02:06:09,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:09,063 INFO L225 Difference]: With dead ends: 502 [2024-11-24 02:06:09,063 INFO L226 Difference]: Without dead ends: 502 [2024-11-24 02:06:09,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:06:09,064 INFO L435 NwaCegarLoop]: 575 mSDtfsCounter, 12 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:09,065 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1406 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 329 Invalid, 2 Unknown, 0 Unchecked, 9.4s Time] [2024-11-24 02:06:09,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2024-11-24 02:06:09,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 501. [2024-11-24 02:06:09,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 312 states have (on average 1.75) internal successors, (546), 473 states have internal predecessors, (546), 23 states have call successors, (23), 10 states have call predecessors, (23), 9 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-24 02:06:09,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 587 transitions. [2024-11-24 02:06:09,090 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 587 transitions. Word has length 7 [2024-11-24 02:06:09,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:09,090 INFO L471 AbstractCegarLoop]: Abstraction has 501 states and 587 transitions. [2024-11-24 02:06:09,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:09,090 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 587 transitions. [2024-11-24 02:06:09,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-24 02:06:09,090 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:09,091 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:09,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 02:06:09,091 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [getoptErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 356 more)] === [2024-11-24 02:06:09,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:09,091 INFO L85 PathProgramCache]: Analyzing trace with hash -663765866, now seen corresponding path program 1 times [2024-11-24 02:06:09,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:09,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114250563] [2024-11-24 02:06:09,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:09,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:11,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:11,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:11,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114250563] [2024-11-24 02:06:11,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114250563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:06:11,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429216784] [2024-11-24 02:06:11,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:11,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:11,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:06:11,132 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:06:11,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 02:06:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:12,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 1659 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 02:06:12,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:06:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:13,276 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:06:13,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-24 02:06:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:13,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429216784] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:06:13,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:06:13,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-24 02:06:13,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548381662] [2024-11-24 02:06:13,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:06:13,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 02:06:13,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:13,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 02:06:13,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2024-11-24 02:06:13,803 INFO L87 Difference]: Start difference. First operand 501 states and 587 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:17,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:06:21,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:06:25,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:06:30,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:30,626 INFO L93 Difference]: Finished difference Result 506 states and 592 transitions. [2024-11-24 02:06:30,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 02:06:30,627 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-24 02:06:30,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:30,629 INFO L225 Difference]: With dead ends: 506 [2024-11-24 02:06:30,630 INFO L226 Difference]: Without dead ends: 506 [2024-11-24 02:06:30,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2024-11-24 02:06:30,631 INFO L435 NwaCegarLoop]: 575 mSDtfsCounter, 412 mSDsluCounter, 2648 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:30,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 3223 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1087 Invalid, 3 Unknown, 0 Unchecked, 16.6s Time] [2024-11-24 02:06:30,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2024-11-24 02:06:30,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2024-11-24 02:06:30,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 318 states have (on average 1.7327044025157232) internal successors, (551), 478 states have internal predecessors, (551), 23 states have call successors, (23), 10 states have call predecessors, (23), 9 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-24 02:06:30,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 592 transitions. [2024-11-24 02:06:30,654 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 592 transitions. Word has length 11 [2024-11-24 02:06:30,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:30,654 INFO L471 AbstractCegarLoop]: Abstraction has 506 states and 592 transitions. [2024-11-24 02:06:30,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:30,654 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 592 transitions. [2024-11-24 02:06:30,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-24 02:06:30,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:30,655 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:30,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 02:06:30,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:30,856 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [getoptErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 356 more)] === [2024-11-24 02:06:30,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:30,856 INFO L85 PathProgramCache]: Analyzing trace with hash 111211401, now seen corresponding path program 1 times [2024-11-24 02:06:30,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:30,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22243721] [2024-11-24 02:06:30,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:30,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:32,432 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:32,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:32,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22243721] [2024-11-24 02:06:32,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22243721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:06:32,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118938534] [2024-11-24 02:06:32,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:32,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:32,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:06:32,435 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:06:32,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 02:06:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:34,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 1705 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 02:06:34,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:06:34,489 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:34,490 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:06:34,755 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:34,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118938534] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:06:34,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:06:34,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-24 02:06:34,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195449728] [2024-11-24 02:06:34,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:06:34,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:06:34,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:34,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:06:34,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:06:34,757 INFO L87 Difference]: Start difference. First operand 506 states and 592 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:34,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:34,980 INFO L93 Difference]: Finished difference Result 526 states and 612 transitions. [2024-11-24 02:06:34,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 02:06:34,980 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-24 02:06:34,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:34,984 INFO L225 Difference]: With dead ends: 526 [2024-11-24 02:06:34,984 INFO L226 Difference]: Without dead ends: 526 [2024-11-24 02:06:34,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:06:34,986 INFO L435 NwaCegarLoop]: 580 mSDtfsCounter, 6 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:34,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2313 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 02:06:34,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-11-24 02:06:35,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2024-11-24 02:06:35,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 338 states have (on average 1.6893491124260356) internal successors, (571), 498 states have internal predecessors, (571), 23 states have call successors, (23), 10 states have call predecessors, (23), 9 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-24 02:06:35,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 612 transitions. [2024-11-24 02:06:35,007 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 612 transitions. Word has length 19 [2024-11-24 02:06:35,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:35,007 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 612 transitions. [2024-11-24 02:06:35,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:35,007 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 612 transitions. [2024-11-24 02:06:35,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-24 02:06:35,008 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:35,009 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:35,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 02:06:35,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:35,209 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [getoptErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 356 more)] === [2024-11-24 02:06:35,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:35,210 INFO L85 PathProgramCache]: Analyzing trace with hash 447432934, now seen corresponding path program 2 times [2024-11-24 02:06:35,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:35,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265211015] [2024-11-24 02:06:35,210 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:06:35,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:35,878 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 02:06:35,878 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-24 02:06:36,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:36,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265211015] [2024-11-24 02:06:36,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265211015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:36,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:36,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:06:36,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640462347] [2024-11-24 02:06:36,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:36,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 02:06:36,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:36,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 02:06:36,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-24 02:06:36,883 INFO L87 Difference]: Start difference. First operand 526 states and 612 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:39,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:39,125 INFO L93 Difference]: Finished difference Result 893 states and 1063 transitions. [2024-11-24 02:06:39,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:06:39,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-24 02:06:39,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:39,131 INFO L225 Difference]: With dead ends: 893 [2024-11-24 02:06:39,131 INFO L226 Difference]: Without dead ends: 893 [2024-11-24 02:06:39,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-24 02:06:39,134 INFO L435 NwaCegarLoop]: 451 mSDtfsCounter, 1395 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:39,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1395 Valid, 1179 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-24 02:06:39,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2024-11-24 02:06:39,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 569. [2024-11-24 02:06:39,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 378 states have (on average 1.687830687830688) internal successors, (638), 537 states have internal predecessors, (638), 25 states have call successors, (25), 12 states have call predecessors, (25), 11 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-24 02:06:39,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 683 transitions. [2024-11-24 02:06:39,168 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 683 transitions. Word has length 39 [2024-11-24 02:06:39,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:39,168 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 683 transitions. [2024-11-24 02:06:39,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:39,169 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 683 transitions. [2024-11-24 02:06:39,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-24 02:06:39,171 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:39,171 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:39,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 02:06:39,171 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [getoptErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 356 more)] === [2024-11-24 02:06:39,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:39,175 INFO L85 PathProgramCache]: Analyzing trace with hash 447432935, now seen corresponding path program 1 times [2024-11-24 02:06:39,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:39,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445475510] [2024-11-24 02:06:39,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:39,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:41,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:41,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445475510] [2024-11-24 02:06:41,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445475510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:06:41,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186624482] [2024-11-24 02:06:41,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:41,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:41,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:06:41,079 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:06:41,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 02:06:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:42,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 1810 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-24 02:06:42,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:06:42,947 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:42,948 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:06:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:43,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186624482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:06:43,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:06:43,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-11-24 02:06:43,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688089065] [2024-11-24 02:06:43,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:06:43,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 02:06:43,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:43,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 02:06:43,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-24 02:06:43,592 INFO L87 Difference]: Start difference. First operand 569 states and 683 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:43,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:43,876 INFO L93 Difference]: Finished difference Result 577 states and 691 transitions. [2024-11-24 02:06:43,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 02:06:43,877 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-24 02:06:43,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:43,879 INFO L225 Difference]: With dead ends: 577 [2024-11-24 02:06:43,879 INFO L226 Difference]: Without dead ends: 577 [2024-11-24 02:06:43,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 68 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-24 02:06:43,880 INFO L435 NwaCegarLoop]: 579 mSDtfsCounter, 3 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2885 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:43,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2885 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 02:06:43,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2024-11-24 02:06:43,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2024-11-24 02:06:43,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 386 states have (on average 1.6735751295336787) internal successors, (646), 545 states have internal predecessors, (646), 25 states have call successors, (25), 12 states have call predecessors, (25), 11 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-24 02:06:43,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 691 transitions. [2024-11-24 02:06:43,895 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 691 transitions. Word has length 39 [2024-11-24 02:06:43,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:43,895 INFO L471 AbstractCegarLoop]: Abstraction has 577 states and 691 transitions. [2024-11-24 02:06:43,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:43,896 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 691 transitions. [2024-11-24 02:06:43,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-24 02:06:43,896 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:43,897 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:43,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 02:06:44,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-24 02:06:44,097 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [getoptErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 356 more)] === [2024-11-24 02:06:44,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:44,098 INFO L85 PathProgramCache]: Analyzing trace with hash -973129639, now seen corresponding path program 2 times [2024-11-24 02:06:44,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:44,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852682526] [2024-11-24 02:06:44,098 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:06:44,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:44,935 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 02:06:44,936 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:06:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-24 02:06:46,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:46,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852682526] [2024-11-24 02:06:46,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852682526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:46,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:46,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:06:46,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908056534] [2024-11-24 02:06:46,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:46,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 02:06:46,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:46,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 02:06:46,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:06:46,112 INFO L87 Difference]: Start difference. First operand 577 states and 691 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:50,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:06:53,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:53,791 INFO L93 Difference]: Finished difference Result 1153 states and 1379 transitions. [2024-11-24 02:06:53,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 02:06:53,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-24 02:06:53,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:53,797 INFO L225 Difference]: With dead ends: 1153 [2024-11-24 02:06:53,798 INFO L226 Difference]: Without dead ends: 1153 [2024-11-24 02:06:53,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-24 02:06:53,799 INFO L435 NwaCegarLoop]: 401 mSDtfsCounter, 1286 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 59 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1288 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:53,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1288 Valid, 1210 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 709 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2024-11-24 02:06:53,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2024-11-24 02:06:53,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 943. [2024-11-24 02:06:53,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 718 states have (on average 1.713091922005571) internal successors, (1230), 882 states have internal predecessors, (1230), 50 states have call successors, (50), 24 states have call predecessors, (50), 21 states have return successors, (45), 38 states have call predecessors, (45), 40 states have call successors, (45) [2024-11-24 02:06:53,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1325 transitions. [2024-11-24 02:06:53,835 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1325 transitions. Word has length 47 [2024-11-24 02:06:53,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:53,836 INFO L471 AbstractCegarLoop]: Abstraction has 943 states and 1325 transitions. [2024-11-24 02:06:53,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:53,836 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1325 transitions. [2024-11-24 02:06:53,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-24 02:06:53,837 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:53,837 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:53,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 02:06:53,838 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [getoptErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 356 more)] === [2024-11-24 02:06:53,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:53,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1712320084, now seen corresponding path program 1 times [2024-11-24 02:06:53,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:53,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979732256] [2024-11-24 02:06:53,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:53,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:54,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:55,076 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-24 02:06:55,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:55,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979732256] [2024-11-24 02:06:55,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979732256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:55,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:55,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 02:06:55,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654259713] [2024-11-24 02:06:55,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:55,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:06:55,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:55,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:06:55,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:06:55,080 INFO L87 Difference]: Start difference. First operand 943 states and 1325 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2024-11-24 02:06:59,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:07:00,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:07:00,384 INFO L93 Difference]: Finished difference Result 1012 states and 1321 transitions. [2024-11-24 02:07:00,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:07:00,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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 55 [2024-11-24 02:07:00,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:07:00,394 INFO L225 Difference]: With dead ends: 1012 [2024-11-24 02:07:00,394 INFO L226 Difference]: Without dead ends: 1012 [2024-11-24 02:07:00,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:07:00,395 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 277 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-24 02:07:00,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 836 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 269 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2024-11-24 02:07:00,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2024-11-24 02:07:00,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 938. [2024-11-24 02:07:00,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 718 states have (on average 1.7061281337047354) internal successors, (1225), 877 states have internal predecessors, (1225), 50 states have call successors, (50), 24 states have call predecessors, (50), 21 states have return successors, (45), 38 states have call predecessors, (45), 40 states have call successors, (45) [2024-11-24 02:07:00,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1320 transitions. [2024-11-24 02:07:00,437 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1320 transitions. Word has length 55 [2024-11-24 02:07:00,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:07:00,438 INFO L471 AbstractCegarLoop]: Abstraction has 938 states and 1320 transitions. [2024-11-24 02:07:00,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2024-11-24 02:07:00,438 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1320 transitions. [2024-11-24 02:07:00,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-24 02:07:00,439 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:07:00,439 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:07:00,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 02:07:00,439 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [getoptErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 356 more)] === [2024-11-24 02:07:00,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:00,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1712320083, now seen corresponding path program 1 times [2024-11-24 02:07:00,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:00,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698580171] [2024-11-24 02:07:00,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:07:00,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:07:02,960 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-24 02:07:02,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:02,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698580171] [2024-11-24 02:07:02,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698580171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:07:02,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:07:02,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 02:07:02,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529918571] [2024-11-24 02:07:02,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:02,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 02:07:02,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:02,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 02:07:02,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 02:07:02,963 INFO L87 Difference]: Start difference. First operand 938 states and 1320 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2024-11-24 02:07:03,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:07:03,915 INFO L93 Difference]: Finished difference Result 940 states and 1323 transitions. [2024-11-24 02:07:03,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 02:07:03,916 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 55 [2024-11-24 02:07:03,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:07:03,921 INFO L225 Difference]: With dead ends: 940 [2024-11-24 02:07:03,921 INFO L226 Difference]: Without dead ends: 940 [2024-11-24 02:07:03,921 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 02:07:03,922 INFO L435 NwaCegarLoop]: 566 mSDtfsCounter, 386 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 2131 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 02:07:03,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 2131 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 02:07:03,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2024-11-24 02:07:03,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 937. [2024-11-24 02:07:03,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 718 states have (on average 1.7047353760445683) internal successors, (1224), 876 states have internal predecessors, (1224), 50 states have call successors, (50), 24 states have call predecessors, (50), 21 states have return successors, (45), 38 states have call predecessors, (45), 40 states have call successors, (45) [2024-11-24 02:07:03,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1319 transitions. [2024-11-24 02:07:03,956 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1319 transitions. Word has length 55 [2024-11-24 02:07:03,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:07:03,957 INFO L471 AbstractCegarLoop]: Abstraction has 937 states and 1319 transitions. [2024-11-24 02:07:03,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2024-11-24 02:07:03,959 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1319 transitions. [2024-11-24 02:07:03,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-24 02:07:03,960 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:07:03,960 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:07:03,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 02:07:03,960 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [getoptErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 356 more)] === [2024-11-24 02:07:03,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:03,961 INFO L85 PathProgramCache]: Analyzing trace with hash 485671284, now seen corresponding path program 1 times [2024-11-24 02:07:03,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:03,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893606158] [2024-11-24 02:07:03,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:07:03,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:07:05,948 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-24 02:07:05,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:05,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893606158] [2024-11-24 02:07:05,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893606158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:07:05,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:07:05,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 02:07:05,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781379829] [2024-11-24 02:07:05,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:05,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 02:07:05,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:05,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 02:07:05,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:07:05,952 INFO L87 Difference]: Start difference. First operand 937 states and 1319 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 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) [2024-11-24 02:07:09,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:07:14,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:07:18,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:07:21,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:07:21,484 INFO L93 Difference]: Finished difference Result 1032 states and 1344 transitions. [2024-11-24 02:07:21,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 02:07:21,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 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 59 [2024-11-24 02:07:21,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:07:21,489 INFO L225 Difference]: With dead ends: 1032 [2024-11-24 02:07:21,489 INFO L226 Difference]: Without dead ends: 1032 [2024-11-24 02:07:21,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:07:21,490 INFO L435 NwaCegarLoop]: 422 mSDtfsCounter, 684 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 17 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2024-11-24 02:07:21,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1388 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 766 Invalid, 3 Unknown, 0 Unchecked, 15.4s Time] [2024-11-24 02:07:21,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2024-11-24 02:07:21,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 952. [2024-11-24 02:07:21,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 733 states have (on average 1.7012278308321964) internal successors, (1247), 891 states have internal predecessors, (1247), 50 states have call successors, (50), 24 states have call predecessors, (50), 21 states have return successors, (45), 38 states have call predecessors, (45), 40 states have call successors, (45) [2024-11-24 02:07:21,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1342 transitions. [2024-11-24 02:07:21,519 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1342 transitions. Word has length 59 [2024-11-24 02:07:21,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:07:21,520 INFO L471 AbstractCegarLoop]: Abstraction has 952 states and 1342 transitions. [2024-11-24 02:07:21,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 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) [2024-11-24 02:07:21,520 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1342 transitions. [2024-11-24 02:07:21,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-24 02:07:21,521 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:07:21,521 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:07:21,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 02:07:21,521 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [getoptErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 356 more)] === [2024-11-24 02:07:21,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:21,522 INFO L85 PathProgramCache]: Analyzing trace with hash 485674581, now seen corresponding path program 1 times [2024-11-24 02:07:21,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:21,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610164548] [2024-11-24 02:07:21,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:07:21,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:07:22,999 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-24 02:07:22,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:23,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610164548] [2024-11-24 02:07:23,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610164548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:07:23,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:07:23,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:07:23,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806676266] [2024-11-24 02:07:23,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:23,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:07:23,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:23,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:07:23,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:07:23,002 INFO L87 Difference]: Start difference. First operand 952 states and 1342 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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) [2024-11-24 02:07:27,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:07:31,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:07:33,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:07:33,107 INFO L93 Difference]: Finished difference Result 1105 states and 1467 transitions. [2024-11-24 02:07:33,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:07:33,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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 59 [2024-11-24 02:07:33,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:07:33,110 INFO L225 Difference]: With dead ends: 1105 [2024-11-24 02:07:33,111 INFO L226 Difference]: Without dead ends: 1105 [2024-11-24 02:07:33,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:07:33,112 INFO L435 NwaCegarLoop]: 464 mSDtfsCounter, 587 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 45 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:07:33,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 1163 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 450 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2024-11-24 02:07:33,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2024-11-24 02:07:33,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1027. [2024-11-24 02:07:33,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 810 states have (on average 1.6753086419753087) internal successors, (1357), 962 states have internal predecessors, (1357), 52 states have call successors, (52), 24 states have call predecessors, (52), 21 states have return successors, (47), 40 states have call predecessors, (47), 42 states have call successors, (47) [2024-11-24 02:07:33,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1456 transitions. [2024-11-24 02:07:33,152 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1456 transitions. Word has length 59 [2024-11-24 02:07:33,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:07:33,154 INFO L471 AbstractCegarLoop]: Abstraction has 1027 states and 1456 transitions. [2024-11-24 02:07:33,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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) [2024-11-24 02:07:33,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1456 transitions. [2024-11-24 02:07:33,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-24 02:07:33,156 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:07:33,156 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:07:33,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 02:07:33,156 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [getoptErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 356 more)] === [2024-11-24 02:07:33,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:33,157 INFO L85 PathProgramCache]: Analyzing trace with hash 485674582, now seen corresponding path program 1 times [2024-11-24 02:07:33,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:33,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984868716] [2024-11-24 02:07:33,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:07:33,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:07:34,612 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-24 02:07:34,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:34,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984868716] [2024-11-24 02:07:34,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984868716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:07:34,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:07:34,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 02:07:34,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787244498] [2024-11-24 02:07:34,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:34,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 02:07:34,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:34,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 02:07:34,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 02:07:34,614 INFO L87 Difference]: Start difference. First operand 1027 states and 1456 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2024-11-24 02:07:35,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:07:35,114 INFO L93 Difference]: Finished difference Result 1033 states and 1456 transitions. [2024-11-24 02:07:35,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 02:07:35,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 59 [2024-11-24 02:07:35,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:07:35,117 INFO L225 Difference]: With dead ends: 1033 [2024-11-24 02:07:35,117 INFO L226 Difference]: Without dead ends: 1033 [2024-11-24 02:07:35,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 02:07:35,118 INFO L435 NwaCegarLoop]: 556 mSDtfsCounter, 395 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 02:07:35,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 2381 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 02:07:35,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2024-11-24 02:07:35,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1027. [2024-11-24 02:07:35,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 810 states have (on average 1.674074074074074) internal successors, (1356), 962 states have internal predecessors, (1356), 52 states have call successors, (52), 24 states have call predecessors, (52), 21 states have return successors, (47), 40 states have call predecessors, (47), 42 states have call successors, (47) [2024-11-24 02:07:35,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1455 transitions. [2024-11-24 02:07:35,152 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1455 transitions. Word has length 59 [2024-11-24 02:07:35,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:07:35,153 INFO L471 AbstractCegarLoop]: Abstraction has 1027 states and 1455 transitions. [2024-11-24 02:07:35,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2024-11-24 02:07:35,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1455 transitions. [2024-11-24 02:07:35,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-24 02:07:35,154 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:07:35,154 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:07:35,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 02:07:35,154 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [getoptErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 356 more)] === [2024-11-24 02:07:35,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:35,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1110541994, now seen corresponding path program 1 times [2024-11-24 02:07:35,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:35,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258792970] [2024-11-24 02:07:35,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:07:35,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:07:36,696 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-24 02:07:36,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:36,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258792970] [2024-11-24 02:07:36,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258792970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:07:36,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:07:36,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 02:07:36,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294615655] [2024-11-24 02:07:36,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:36,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:07:36,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:36,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:07:36,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:07:36,699 INFO L87 Difference]: Start difference. First operand 1027 states and 1455 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-11-24 02:07:40,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:07:41,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:07:41,984 INFO L93 Difference]: Finished difference Result 1093 states and 1454 transitions. [2024-11-24 02:07:41,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:07:41,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 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 62 [2024-11-24 02:07:41,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:07:41,990 INFO L225 Difference]: With dead ends: 1093 [2024-11-24 02:07:41,990 INFO L226 Difference]: Without dead ends: 1093 [2024-11-24 02:07:41,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:07:41,991 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 263 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-24 02:07:41,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 845 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 249 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2024-11-24 02:07:41,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2024-11-24 02:07:42,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1026. [2024-11-24 02:07:42,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 810 states have (on average 1.671604938271605) internal successors, (1354), 961 states have internal predecessors, (1354), 52 states have call successors, (52), 24 states have call predecessors, (52), 21 states have return successors, (47), 40 states have call predecessors, (47), 42 states have call successors, (47) [2024-11-24 02:07:42,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1453 transitions. [2024-11-24 02:07:42,027 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1453 transitions. Word has length 62 [2024-11-24 02:07:42,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:07:42,028 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1453 transitions. [2024-11-24 02:07:42,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-11-24 02:07:42,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1453 transitions. [2024-11-24 02:07:42,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-24 02:07:42,029 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:07:42,029 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:07:42,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 02:07:42,030 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [getoptErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 356 more)] === [2024-11-24 02:07:42,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:42,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1110541993, now seen corresponding path program 1 times [2024-11-24 02:07:42,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:42,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957434631] [2024-11-24 02:07:42,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:07:42,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:07:44,706 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-24 02:07:44,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:44,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957434631] [2024-11-24 02:07:44,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957434631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:07:44,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:07:44,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 02:07:44,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386176437] [2024-11-24 02:07:44,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:44,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 02:07:44,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:44,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 02:07:44,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:07:44,708 INFO L87 Difference]: Start difference. First operand 1026 states and 1453 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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) [2024-11-24 02:07:48,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:07:52,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:07:56,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:08:00,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:08:04,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:08:08,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:08:12,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:08:12,243 INFO L93 Difference]: Finished difference Result 1031 states and 1453 transitions. [2024-11-24 02:08:12,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 02:08:12,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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 62 [2024-11-24 02:08:12,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:08:12,246 INFO L225 Difference]: With dead ends: 1031 [2024-11-24 02:08:12,247 INFO L226 Difference]: Without dead ends: 1031 [2024-11-24 02:08:12,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-24 02:08:12,247 INFO L435 NwaCegarLoop]: 557 mSDtfsCounter, 18 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.4s IncrementalHoareTripleChecker+Time [2024-11-24 02:08:12,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2049 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 812 Invalid, 6 Unknown, 0 Unchecked, 27.4s Time] [2024-11-24 02:08:12,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2024-11-24 02:08:12,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1026. [2024-11-24 02:08:12,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 810 states have (on average 1.6703703703703703) internal successors, (1353), 961 states have internal predecessors, (1353), 52 states have call successors, (52), 24 states have call predecessors, (52), 21 states have return successors, (47), 40 states have call predecessors, (47), 42 states have call successors, (47) [2024-11-24 02:08:12,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1452 transitions. [2024-11-24 02:08:12,274 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1452 transitions. Word has length 62 [2024-11-24 02:08:12,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:08:12,274 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1452 transitions. [2024-11-24 02:08:12,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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) [2024-11-24 02:08:12,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1452 transitions. [2024-11-24 02:08:12,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-24 02:08:12,275 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:08:12,275 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:08:12,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 02:08:12,276 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [getoptErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 356 more)] === [2024-11-24 02:08:12,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:08:12,276 INFO L85 PathProgramCache]: Analyzing trace with hash -22368838, now seen corresponding path program 1 times [2024-11-24 02:08:12,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:08:12,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762872374] [2024-11-24 02:08:12,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:08:12,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:08:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:08:13,684 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-24 02:08:13,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:08:13,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762872374] [2024-11-24 02:08:13,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762872374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:08:13,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:08:13,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:08:13,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506427315] [2024-11-24 02:08:13,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:08:13,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 02:08:13,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:08:13,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 02:08:13,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:08:13,686 INFO L87 Difference]: Start difference. First operand 1026 states and 1452 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-11-24 02:08:17,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:08:21,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:08:25,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:08:27,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:08:27,764 INFO L93 Difference]: Finished difference Result 1025 states and 1450 transitions. [2024-11-24 02:08:27,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:08:27,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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 65 [2024-11-24 02:08:27,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:08:27,769 INFO L225 Difference]: With dead ends: 1025 [2024-11-24 02:08:27,770 INFO L226 Difference]: Without dead ends: 1025 [2024-11-24 02:08:27,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 02:08:27,771 INFO L435 NwaCegarLoop]: 555 mSDtfsCounter, 13 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:08:27,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1743 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 510 Invalid, 3 Unknown, 0 Unchecked, 14.0s Time] [2024-11-24 02:08:27,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2024-11-24 02:08:27,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1025. [2024-11-24 02:08:27,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 810 states have (on average 1.6679012345679012) internal successors, (1351), 960 states have internal predecessors, (1351), 52 states have call successors, (52), 24 states have call predecessors, (52), 21 states have return successors, (47), 40 states have call predecessors, (47), 42 states have call successors, (47) [2024-11-24 02:08:27,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1450 transitions. [2024-11-24 02:08:27,797 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1450 transitions. Word has length 65 [2024-11-24 02:08:27,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:08:27,797 INFO L471 AbstractCegarLoop]: Abstraction has 1025 states and 1450 transitions. [2024-11-24 02:08:27,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-11-24 02:08:27,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1450 transitions. [2024-11-24 02:08:27,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-24 02:08:27,798 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:08:27,798 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:08:27,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 02:08:27,799 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [getoptErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 356 more)] === [2024-11-24 02:08:27,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:08:27,799 INFO L85 PathProgramCache]: Analyzing trace with hash -22368837, now seen corresponding path program 1 times [2024-11-24 02:08:27,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:08:27,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533339371] [2024-11-24 02:08:27,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:08:27,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:08:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:08:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-24 02:08:29,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:08:29,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533339371] [2024-11-24 02:08:29,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533339371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:08:29,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:08:29,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:08:29,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136240243] [2024-11-24 02:08:29,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:08:29,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 02:08:29,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:08:29,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 02:08:29,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:08:29,753 INFO L87 Difference]: Start difference. First operand 1025 states and 1450 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-11-24 02:08:33,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:08:37,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:08:41,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:08:43,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:08:43,753 INFO L93 Difference]: Finished difference Result 1024 states and 1448 transitions. [2024-11-24 02:08:43,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:08:43,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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 65 [2024-11-24 02:08:43,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:08:43,758 INFO L225 Difference]: With dead ends: 1024 [2024-11-24 02:08:43,758 INFO L226 Difference]: Without dead ends: 1024 [2024-11-24 02:08:43,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 02:08:43,759 INFO L435 NwaCegarLoop]: 554 mSDtfsCounter, 12 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2024-11-24 02:08:43,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1774 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 476 Invalid, 3 Unknown, 0 Unchecked, 13.9s Time] [2024-11-24 02:08:43,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2024-11-24 02:08:43,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2024-11-24 02:08:43,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 810 states have (on average 1.665432098765432) internal successors, (1349), 959 states have internal predecessors, (1349), 52 states have call successors, (52), 24 states have call predecessors, (52), 21 states have return successors, (47), 40 states have call predecessors, (47), 42 states have call successors, (47) [2024-11-24 02:08:43,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1448 transitions. [2024-11-24 02:08:43,783 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1448 transitions. Word has length 65 [2024-11-24 02:08:43,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:08:43,783 INFO L471 AbstractCegarLoop]: Abstraction has 1024 states and 1448 transitions. [2024-11-24 02:08:43,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-11-24 02:08:43,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1448 transitions. [2024-11-24 02:08:43,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-24 02:08:43,784 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:08:43,785 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:08:43,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 02:08:43,785 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [getoptErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 356 more)] === [2024-11-24 02:08:43,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:08:43,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1315432255, now seen corresponding path program 1 times [2024-11-24 02:08:43,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:08:43,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119716749] [2024-11-24 02:08:43,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:08:43,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:08:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:08:44,862 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-24 02:08:44,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:08:44,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119716749] [2024-11-24 02:08:44,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119716749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:08:44,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:08:44,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:08:44,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069478847] [2024-11-24 02:08:44,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:08:44,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 02:08:44,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:08:44,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 02:08:44,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:08:44,864 INFO L87 Difference]: Start difference. First operand 1024 states and 1448 transitions. Second operand has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 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) [2024-11-24 02:08:48,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:08:52,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:08:54,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:08:54,461 INFO L93 Difference]: Finished difference Result 1023 states and 1446 transitions. [2024-11-24 02:08:54,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:08:54,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 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 70 [2024-11-24 02:08:54,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:08:54,466 INFO L225 Difference]: With dead ends: 1023 [2024-11-24 02:08:54,466 INFO L226 Difference]: Without dead ends: 1023 [2024-11-24 02:08:54,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 02:08:54,468 INFO L435 NwaCegarLoop]: 561 mSDtfsCounter, 6 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2024-11-24 02:08:54,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1887 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 367 Invalid, 2 Unknown, 0 Unchecked, 9.5s Time] [2024-11-24 02:08:54,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2024-11-24 02:08:54,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1023. [2024-11-24 02:08:54,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 810 states have (on average 1.662962962962963) internal successors, (1347), 958 states have internal predecessors, (1347), 52 states have call successors, (52), 24 states have call predecessors, (52), 21 states have return successors, (47), 40 states have call predecessors, (47), 42 states have call successors, (47) [2024-11-24 02:08:54,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1446 transitions. [2024-11-24 02:08:54,493 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1446 transitions. Word has length 70 [2024-11-24 02:08:54,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:08:54,494 INFO L471 AbstractCegarLoop]: Abstraction has 1023 states and 1446 transitions. [2024-11-24 02:08:54,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 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) [2024-11-24 02:08:54,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1446 transitions. [2024-11-24 02:08:54,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-24 02:08:54,495 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:08:54,495 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:08:54,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 02:08:54,495 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [getoptErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 356 more)] === [2024-11-24 02:08:54,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:08:54,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1315432256, now seen corresponding path program 1 times [2024-11-24 02:08:54,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:08:54,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218839922] [2024-11-24 02:08:54,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:08:54,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:08:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:08:57,071 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-24 02:08:57,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:08:57,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218839922] [2024-11-24 02:08:57,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218839922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:08:57,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:08:57,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 02:08:57,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320473093] [2024-11-24 02:08:57,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:08:57,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 02:08:57,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:08:57,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 02:08:57,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:08:57,075 INFO L87 Difference]: Start difference. First operand 1023 states and 1446 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 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) [2024-11-24 02:09:01,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:09:05,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:09:09,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:09:13,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:09:17,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:09:19,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:09:19,984 INFO L93 Difference]: Finished difference Result 1033 states and 1457 transitions. [2024-11-24 02:09:19,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 02:09:19,984 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 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 70 [2024-11-24 02:09:19,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:09:19,988 INFO L225 Difference]: With dead ends: 1033 [2024-11-24 02:09:19,988 INFO L226 Difference]: Without dead ends: 1033 [2024-11-24 02:09:19,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:09:19,988 INFO L435 NwaCegarLoop]: 551 mSDtfsCounter, 12 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2024-11-24 02:09:19,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2171 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 656 Invalid, 5 Unknown, 0 Unchecked, 22.8s Time] [2024-11-24 02:09:19,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2024-11-24 02:09:20,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1031. [2024-11-24 02:09:20,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 818 states have (on average 1.6577017114914425) internal successors, (1356), 966 states have internal predecessors, (1356), 52 states have call successors, (52), 24 states have call predecessors, (52), 21 states have return successors, (47), 40 states have call predecessors, (47), 42 states have call successors, (47) [2024-11-24 02:09:20,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1455 transitions. [2024-11-24 02:09:20,009 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1455 transitions. Word has length 70 [2024-11-24 02:09:20,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:09:20,010 INFO L471 AbstractCegarLoop]: Abstraction has 1031 states and 1455 transitions. [2024-11-24 02:09:20,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 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) [2024-11-24 02:09:20,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1455 transitions. [2024-11-24 02:09:20,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-24 02:09:20,011 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:09:20,011 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 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, 1, 1, 1, 1, 1, 1] [2024-11-24 02:09:20,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 02:09:20,011 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [getoptErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 356 more)] === [2024-11-24 02:09:20,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:09:20,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1961519212, now seen corresponding path program 1 times [2024-11-24 02:09:20,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:09:20,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725086424] [2024-11-24 02:09:20,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:09:20,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:09:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:09:22,763 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-24 02:09:22,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:09:22,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725086424] [2024-11-24 02:09:22,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725086424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:09:22,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055659814] [2024-11-24 02:09:22,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:09:22,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:09:22,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:09:22,767 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:09:22,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 02:09:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:09:25,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 2042 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-24 02:09:25,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:09:25,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-24 02:09:25,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-24 02:09:25,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-24 02:09:26,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 12 [2024-11-24 02:09:26,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2024-11-24 02:09:26,250 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-24 02:09:26,250 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:09:27,314 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-24 02:09:27,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055659814] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:09:27,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:09:27,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2024-11-24 02:09:27,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504754664] [2024-11-24 02:09:27,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:09:27,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-24 02:09:27,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:09:27,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-24 02:09:27,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2024-11-24 02:09:27,317 INFO L87 Difference]: Start difference. First operand 1031 states and 1455 transitions. Second operand has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 24 states have internal predecessors, (73), 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) [2024-11-24 02:09:31,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:09:35,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:09:39,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:09:43,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:09:47,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:09:51,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:09:55,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:09:59,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:10:03,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:10:07,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:10:11,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:10:15,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:10:19,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:10:23,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:10:27,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:10:31,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:10:35,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:10:39,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:10:43,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:10:47,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:10:52,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:10:56,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 02:11:03,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:11:03,845 INFO L93 Difference]: Finished difference Result 1044 states and 1468 transitions. [2024-11-24 02:11:03,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 02:11:03,846 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 24 states have internal predecessors, (73), 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 75 [2024-11-24 02:11:03,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:11:03,848 INFO L225 Difference]: With dead ends: 1044 [2024-11-24 02:11:03,848 INFO L226 Difference]: Without dead ends: 1044 [2024-11-24 02:11:03,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870 [2024-11-24 02:11:03,849 INFO L435 NwaCegarLoop]: 551 mSDtfsCounter, 44 mSDsluCounter, 4447 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 8 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 4998 SdHoareTripleChecker+Invalid, 1854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95.9s IncrementalHoareTripleChecker+Time [2024-11-24 02:11:03,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 4998 Invalid, 1854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1824 Invalid, 22 Unknown, 0 Unchecked, 95.9s Time] [2024-11-24 02:11:03,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2024-11-24 02:11:03,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1044. [2024-11-24 02:11:03,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 832 states have (on average 1.6454326923076923) internal successors, (1369), 979 states have internal predecessors, (1369), 52 states have call successors, (52), 24 states have call predecessors, (52), 21 states have return successors, (47), 40 states have call predecessors, (47), 42 states have call successors, (47) [2024-11-24 02:11:03,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1468 transitions. [2024-11-24 02:11:03,871 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1468 transitions. Word has length 75 [2024-11-24 02:11:03,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:11:03,872 INFO L471 AbstractCegarLoop]: Abstraction has 1044 states and 1468 transitions. [2024-11-24 02:11:03,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 24 states have internal predecessors, (73), 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) [2024-11-24 02:11:03,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1468 transitions. [2024-11-24 02:11:03,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-24 02:11:03,873 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:11:03,873 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2024-11-24 02:11:03,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 02:11:04,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:11:04,074 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [getoptErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 356 more)] === [2024-11-24 02:11:04,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:11:04,074 INFO L85 PathProgramCache]: Analyzing trace with hash -334590835, now seen corresponding path program 1 times [2024-11-24 02:11:04,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:11:04,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860622935] [2024-11-24 02:11:04,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:11:04,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:11:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:11:05,246 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-24 02:11:05,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:11:05,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860622935] [2024-11-24 02:11:05,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860622935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:11:05,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705358761] [2024-11-24 02:11:05,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:11:05,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:11:05,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:11:05,249 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:11:05,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 02:11:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:11:07,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 2105 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 02:11:07,387 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:11:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-24 02:11:07,549 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:11:07,868 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-24 02:11:07,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705358761] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:11:07,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:11:07,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-24 02:11:07,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650155393] [2024-11-24 02:11:07,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:11:07,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:11:07,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:11:07,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:11:07,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:11:07,870 INFO L87 Difference]: Start difference. First operand 1044 states and 1468 transitions. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 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) [2024-11-24 02:11:08,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:11:08,068 INFO L93 Difference]: Finished difference Result 1101 states and 1523 transitions. [2024-11-24 02:11:08,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 02:11:08,068 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 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 86 [2024-11-24 02:11:08,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:11:08,071 INFO L225 Difference]: With dead ends: 1101 [2024-11-24 02:11:08,071 INFO L226 Difference]: Without dead ends: 1101 [2024-11-24 02:11:08,071 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:11:08,072 INFO L435 NwaCegarLoop]: 563 mSDtfsCounter, 21 mSDsluCounter, 2248 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2811 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 02:11:08,072 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2811 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 02:11:08,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2024-11-24 02:11:08,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1094. [2024-11-24 02:11:08,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 882 states have (on average 1.6145124716553287) internal successors, (1424), 1029 states have internal predecessors, (1424), 52 states have call successors, (52), 24 states have call predecessors, (52), 21 states have return successors, (47), 40 states have call predecessors, (47), 42 states have call successors, (47) [2024-11-24 02:11:08,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1523 transitions. [2024-11-24 02:11:08,092 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1523 transitions. Word has length 86 [2024-11-24 02:11:08,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:11:08,092 INFO L471 AbstractCegarLoop]: Abstraction has 1094 states and 1523 transitions. [2024-11-24 02:11:08,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 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) [2024-11-24 02:11:08,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1523 transitions. [2024-11-24 02:11:08,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-24 02:11:08,094 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:11:08,094 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1] [2024-11-24 02:11:08,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 02:11:08,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-24 02:11:08,295 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [getoptErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, getoptErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 356 more)] === [2024-11-24 02:11:08,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:11:08,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1032962375, now seen corresponding path program 2 times [2024-11-24 02:11:08,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:11:08,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141936564] [2024-11-24 02:11:08,296 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:11:08,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:11:09,041 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 02:11:09,041 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:11:09,886 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 3 proven. 148 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-24 02:11:09,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:11:09,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141936564] [2024-11-24 02:11:09,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141936564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:11:09,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987761723] [2024-11-24 02:11:09,887 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:11:09,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:11:09,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:11:09,889 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:11:09,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd9cc52-81ca-40c7-92f1-50712125eda6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process