./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd --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 32bit --witnessprinter.graph.data.programhash ce6a3162e09155ad765d255c42023f1cbec9d995c66c63f43c14fadd8640484e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:07:13,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:07:13,501 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 14:07:13,509 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:07:13,510 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:07:13,545 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:07:13,546 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:07:13,546 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:07:13,547 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:07:13,547 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:07:13,547 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:07:13,547 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:07:13,548 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:07:13,548 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:07:13,548 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:07:13,550 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:07:13,550 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:07:13,550 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:07:13,550 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:07:13,550 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:07:13,551 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 14:07:13,551 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 14:07:13,551 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 14:07:13,551 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:07:13,551 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:07:13,551 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:07:13,551 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:07:13,551 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:07:13,551 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:07:13,552 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:07:13,552 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:07:13,552 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:07:13,552 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:07:13,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:07:13,552 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:07:13,552 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:07:13,552 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:07:13,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:07:13,553 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:07:13,553 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:07:13,553 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:07:13,553 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:07:13,553 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_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce6a3162e09155ad765d255c42023f1cbec9d995c66c63f43c14fadd8640484e [2024-11-13 14:07:13,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:07:13,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:07:13,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:07:13,865 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:07:13,865 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:07:13,867 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i Unable to find full path for "g++" [2024-11-13 14:07:15,678 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:07:16,232 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:07:16,233 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i [2024-11-13 14:07:16,263 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/data/de1c6a28b/e2f2fe5621c3446e84193dabfb1389f4/FLAG1e770d4a3 [2024-11-13 14:07:16,286 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/data/de1c6a28b/e2f2fe5621c3446e84193dabfb1389f4 [2024-11-13 14:07:16,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:07:16,290 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:07:16,293 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:07:16,293 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:07:16,302 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:07:16,303 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:07:16" (1/1) ... [2024-11-13 14:07:16,304 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544f929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:16, skipping insertion in model container [2024-11-13 14:07:16,304 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:07:16" (1/1) ... [2024-11-13 14:07:16,374 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:07:16,904 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:16,945 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:16,949 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:16,953 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:16,961 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:17,003 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:17,006 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:17,008 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:17,014 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:17,042 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:17,042 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:17,045 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:17,045 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:17,077 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:17,077 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:17,086 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:17,086 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:17,125 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:17,130 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:17,132 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:17,133 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:17,163 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:17,168 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:17,171 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:17,171 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:07:17,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:07:17,195 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:07:17,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:07:17,465 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:07:17,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:17 WrapperNode [2024-11-13 14:07:17,468 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:07:17,469 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:07:17,469 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:07:17,469 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:07:17,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:17" (1/1) ... [2024-11-13 14:07:17,512 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:17" (1/1) ... [2024-11-13 14:07:17,660 INFO L138 Inliner]: procedures = 177, calls = 507, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3362 [2024-11-13 14:07:17,660 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:07:17,661 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:07:17,662 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:07:17,662 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:07:17,671 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:17" (1/1) ... [2024-11-13 14:07:17,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:17" (1/1) ... [2024-11-13 14:07:17,693 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:17" (1/1) ... [2024-11-13 14:07:17,865 INFO L175 MemorySlicer]: Split 480 memory accesses to 3 slices as follows [2, 372, 106]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 86 writes are split as follows [0, 82, 4]. [2024-11-13 14:07:17,865 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:17" (1/1) ... [2024-11-13 14:07:17,870 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:17" (1/1) ... [2024-11-13 14:07:17,953 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:17" (1/1) ... [2024-11-13 14:07:18,027 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:17" (1/1) ... [2024-11-13 14:07:18,043 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:17" (1/1) ... [2024-11-13 14:07:18,057 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:17" (1/1) ... [2024-11-13 14:07:18,085 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:07:18,086 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:07:18,086 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:07:18,086 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:07:18,087 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:17" (1/1) ... [2024-11-13 14:07:18,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:07:18,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:07:18,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:07:18,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:07:18,158 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-11-13 14:07:18,158 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-11-13 14:07:18,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:07:18,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:07:18,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 14:07:18,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 14:07:18,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 14:07:18,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:07:18,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:07:18,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 14:07:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-13 14:07:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-13 14:07:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-13 14:07:18,161 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-13 14:07:18,161 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-13 14:07:18,161 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-13 14:07:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 14:07:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:07:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 14:07:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 14:07:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 14:07:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 14:07:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 14:07:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 14:07:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 14:07:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:07:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:07:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:07:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 14:07:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:07:18,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:07:18,538 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:07:18,540 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:07:18,620 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 14:07:18,653 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 14:07:18,680 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 14:07:24,020 INFO L? ?]: Removed 2487 outVars from TransFormulas that were not future-live. [2024-11-13 14:07:24,020 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:07:24,092 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:07:24,092 INFO L316 CfgBuilder]: Removed 151 assume(true) statements. [2024-11-13 14:07:24,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:07:24 BoogieIcfgContainer [2024-11-13 14:07:24,093 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:07:24,096 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:07:24,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:07:24,101 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:07:24,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:07:16" (1/3) ... [2024-11-13 14:07:24,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cef582a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:07:24, skipping insertion in model container [2024-11-13 14:07:24,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:17" (2/3) ... [2024-11-13 14:07:24,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cef582a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:07:24, skipping insertion in model container [2024-11-13 14:07:24,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:07:24" (3/3) ... [2024-11-13 14:07:24,104 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test10-1.i [2024-11-13 14:07:24,125 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:07:24,127 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_test10-1.i that has 6 procedures, 2660 locations, 1 initial locations, 84 loop locations, and 986 error locations. [2024-11-13 14:07:24,233 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:07:24,252 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;@122c0120, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:07:24,252 INFO L334 AbstractCegarLoop]: Starting to check reachability of 986 error locations. [2024-11-13 14:07:24,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 2650 states, 1652 states have (on average 1.9776029055690072) internal successors, (3267), 2636 states have internal predecessors, (3267), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-13 14:07:24,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 14:07:24,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:24,275 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 14:07:24,275 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:07:24,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:24,283 INFO L85 PathProgramCache]: Analyzing trace with hash 84472, now seen corresponding path program 1 times [2024-11-13 14:07:24,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:24,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838624674] [2024-11-13 14:07:24,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:24,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:24,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:24,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838624674] [2024-11-13 14:07:24,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838624674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:24,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:24,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:07:24,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297571231] [2024-11-13 14:07:24,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:24,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:07:24,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:24,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:07:24,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:07:24,615 INFO L87 Difference]: Start difference. First operand has 2650 states, 1652 states have (on average 1.9776029055690072) internal successors, (3267), 2636 states have internal predecessors, (3267), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) 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) [2024-11-13 14:07:26,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:26,903 INFO L93 Difference]: Finished difference Result 3236 states and 3807 transitions. [2024-11-13 14:07:26,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:07:26,905 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 [2024-11-13 14:07:26,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:26,948 INFO L225 Difference]: With dead ends: 3236 [2024-11-13 14:07:26,949 INFO L226 Difference]: Without dead ends: 3234 [2024-11-13 14:07:26,951 INFO L431 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 [2024-11-13 14:07:26,954 INFO L432 NwaCegarLoop]: 2197 mSDtfsCounter, 2869 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2879 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:26,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2879 Valid, 2734 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-13 14:07:26,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3234 states. [2024-11-13 14:07:27,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3234 to 2887. [2024-11-13 14:07:27,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 1917 states have (on average 1.8669796557120502) internal successors, (3579), 2871 states have internal predecessors, (3579), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-13 14:07:27,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 3611 transitions. [2024-11-13 14:07:27,149 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 3611 transitions. Word has length 3 [2024-11-13 14:07:27,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:27,149 INFO L471 AbstractCegarLoop]: Abstraction has 2887 states and 3611 transitions. [2024-11-13 14:07:27,149 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) [2024-11-13 14:07:27,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 3611 transitions. [2024-11-13 14:07:27,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 14:07:27,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:27,150 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 14:07:27,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:07:27,151 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:07:27,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:27,151 INFO L85 PathProgramCache]: Analyzing trace with hash 84473, now seen corresponding path program 1 times [2024-11-13 14:07:27,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:27,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195332669] [2024-11-13 14:07:27,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:27,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:27,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:27,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:27,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195332669] [2024-11-13 14:07:27,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195332669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:27,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:27,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:07:27,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140365716] [2024-11-13 14:07:27,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:27,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:07:27,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:27,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:07:27,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:07:27,316 INFO L87 Difference]: Start difference. First operand 2887 states and 3611 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) [2024-11-13 14:07:30,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:30,249 INFO L93 Difference]: Finished difference Result 4956 states and 6133 transitions. [2024-11-13 14:07:30,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:07:30,250 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 [2024-11-13 14:07:30,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:30,272 INFO L225 Difference]: With dead ends: 4956 [2024-11-13 14:07:30,272 INFO L226 Difference]: Without dead ends: 4956 [2024-11-13 14:07:30,272 INFO L431 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 [2024-11-13 14:07:30,273 INFO L432 NwaCegarLoop]: 2399 mSDtfsCounter, 2502 mSDsluCounter, 2108 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2509 SdHoareTripleChecker+Valid, 4507 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:30,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2509 Valid, 4507 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1683 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-13 14:07:30,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4956 states. [2024-11-13 14:07:30,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4956 to 4280. [2024-11-13 14:07:30,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 3308 states have (on average 1.835247883917775) internal successors, (6071), 4257 states have internal predecessors, (6071), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-13 14:07:30,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 6117 transitions. [2024-11-13 14:07:30,436 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 6117 transitions. Word has length 3 [2024-11-13 14:07:30,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:30,436 INFO L471 AbstractCegarLoop]: Abstraction has 4280 states and 6117 transitions. [2024-11-13 14:07:30,437 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) [2024-11-13 14:07:30,437 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 6117 transitions. [2024-11-13 14:07:30,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 14:07:30,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:30,437 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:30,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:07:30,437 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:07:30,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:30,438 INFO L85 PathProgramCache]: Analyzing trace with hash 327722514, now seen corresponding path program 1 times [2024-11-13 14:07:30,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:30,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307563844] [2024-11-13 14:07:30,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:30,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:30,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:30,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307563844] [2024-11-13 14:07:30,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307563844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:30,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:30,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:07:30,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715494556] [2024-11-13 14:07:30,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:30,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:07:30,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:30,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:07:30,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:07:30,612 INFO L87 Difference]: Start difference. First operand 4280 states and 6117 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-13 14:07:32,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:32,634 INFO L93 Difference]: Finished difference Result 5364 states and 7438 transitions. [2024-11-13 14:07:32,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:07:32,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-13 14:07:32,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:32,655 INFO L225 Difference]: With dead ends: 5364 [2024-11-13 14:07:32,655 INFO L226 Difference]: Without dead ends: 5364 [2024-11-13 14:07:32,656 INFO L431 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 [2024-11-13 14:07:32,659 INFO L432 NwaCegarLoop]: 3528 mSDtfsCounter, 2840 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2850 SdHoareTripleChecker+Valid, 4697 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:32,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2850 Valid, 4697 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 14:07:32,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5364 states. [2024-11-13 14:07:32,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5364 to 4188. [2024-11-13 14:07:32,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4188 states, 3308 states have (on average 1.7868802902055623) internal successors, (5911), 4165 states have internal predecessors, (5911), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-13 14:07:32,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 5957 transitions. [2024-11-13 14:07:32,761 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 5957 transitions. Word has length 8 [2024-11-13 14:07:32,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:32,761 INFO L471 AbstractCegarLoop]: Abstraction has 4188 states and 5957 transitions. [2024-11-13 14:07:32,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-13 14:07:32,762 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 5957 transitions. [2024-11-13 14:07:32,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 14:07:32,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:32,762 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:32,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:07:32,763 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:07:32,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:32,763 INFO L85 PathProgramCache]: Analyzing trace with hash 327722515, now seen corresponding path program 1 times [2024-11-13 14:07:32,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:32,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908959915] [2024-11-13 14:07:32,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:32,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:32,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:32,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:32,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908959915] [2024-11-13 14:07:32,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908959915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:32,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:32,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:07:32,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116108385] [2024-11-13 14:07:32,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:32,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:07:32,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:32,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:07:32,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:07:32,938 INFO L87 Difference]: Start difference. First operand 4188 states and 5957 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-13 14:07:34,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:34,843 INFO L93 Difference]: Finished difference Result 6923 states and 9906 transitions. [2024-11-13 14:07:34,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:07:34,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-13 14:07:34,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:34,865 INFO L225 Difference]: With dead ends: 6923 [2024-11-13 14:07:34,865 INFO L226 Difference]: Without dead ends: 6923 [2024-11-13 14:07:34,865 INFO L431 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 [2024-11-13 14:07:34,866 INFO L432 NwaCegarLoop]: 3887 mSDtfsCounter, 2319 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2323 SdHoareTripleChecker+Valid, 5665 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:34,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2323 Valid, 5665 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 14:07:34,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6923 states. [2024-11-13 14:07:34,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6923 to 4720. [2024-11-13 14:07:34,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4720 states, 3850 states have (on average 1.7805194805194806) internal successors, (6855), 4697 states have internal predecessors, (6855), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-13 14:07:34,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 6901 transitions. [2024-11-13 14:07:34,977 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 6901 transitions. Word has length 8 [2024-11-13 14:07:34,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:34,977 INFO L471 AbstractCegarLoop]: Abstraction has 4720 states and 6901 transitions. [2024-11-13 14:07:34,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-13 14:07:34,978 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 6901 transitions. [2024-11-13 14:07:34,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 14:07:34,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:34,978 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:34,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:07:34,978 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr638REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:07:34,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:34,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1052829337, now seen corresponding path program 1 times [2024-11-13 14:07:34,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:34,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177429716] [2024-11-13 14:07:34,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:34,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:35,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:35,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177429716] [2024-11-13 14:07:35,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177429716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:35,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:35,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:07:35,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608511630] [2024-11-13 14:07:35,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:35,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:07:35,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:35,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:07:35,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:07:35,147 INFO L87 Difference]: Start difference. First operand 4720 states and 6901 transitions. Second operand has 4 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) [2024-11-13 14:07:35,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:35,487 INFO L93 Difference]: Finished difference Result 6557 states and 9343 transitions. [2024-11-13 14:07:35,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:07:35,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 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 11 [2024-11-13 14:07:35,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:35,522 INFO L225 Difference]: With dead ends: 6557 [2024-11-13 14:07:35,522 INFO L226 Difference]: Without dead ends: 6557 [2024-11-13 14:07:35,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:07:35,524 INFO L432 NwaCegarLoop]: 3442 mSDtfsCounter, 1449 mSDsluCounter, 6290 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 9732 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:35,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 9732 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:07:35,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6557 states. [2024-11-13 14:07:35,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6557 to 4722. [2024-11-13 14:07:35,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4722 states, 3852 states have (on average 1.7801142263759087) internal successors, (6857), 4699 states have internal predecessors, (6857), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-13 14:07:35,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4722 states to 4722 states and 6903 transitions. [2024-11-13 14:07:35,626 INFO L78 Accepts]: Start accepts. Automaton has 4722 states and 6903 transitions. Word has length 11 [2024-11-13 14:07:35,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:35,626 INFO L471 AbstractCegarLoop]: Abstraction has 4722 states and 6903 transitions. [2024-11-13 14:07:35,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2024-11-13 14:07:35,626 INFO L276 IsEmpty]: Start isEmpty. Operand 4722 states and 6903 transitions. [2024-11-13 14:07:35,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 14:07:35,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:35,627 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:35,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:07:35,627 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:07:35,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:35,628 INFO L85 PathProgramCache]: Analyzing trace with hash -286362881, now seen corresponding path program 1 times [2024-11-13 14:07:35,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:35,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641847220] [2024-11-13 14:07:35,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:35,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:35,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:35,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:35,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641847220] [2024-11-13 14:07:35,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641847220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:35,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:35,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:07:35,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873024735] [2024-11-13 14:07:35,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:35,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:07:35,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:35,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:07:35,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:07:35,772 INFO L87 Difference]: Start difference. First operand 4722 states and 6903 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:37,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:37,696 INFO L93 Difference]: Finished difference Result 4797 states and 7009 transitions. [2024-11-13 14:07:37,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:07:37,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 14:07:37,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:37,724 INFO L225 Difference]: With dead ends: 4797 [2024-11-13 14:07:37,724 INFO L226 Difference]: Without dead ends: 4797 [2024-11-13 14:07:37,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:07:37,726 INFO L432 NwaCegarLoop]: 2025 mSDtfsCounter, 3103 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3113 SdHoareTripleChecker+Valid, 3925 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:37,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3113 Valid, 3925 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2009 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 14:07:37,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4797 states. [2024-11-13 14:07:37,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4797 to 4699. [2024-11-13 14:07:37,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4699 states, 3852 states have (on average 1.7681723779854621) internal successors, (6811), 4676 states have internal predecessors, (6811), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-13 14:07:37,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4699 states to 4699 states and 6857 transitions. [2024-11-13 14:07:37,836 INFO L78 Accepts]: Start accepts. Automaton has 4699 states and 6857 transitions. Word has length 20 [2024-11-13 14:07:37,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:37,836 INFO L471 AbstractCegarLoop]: Abstraction has 4699 states and 6857 transitions. [2024-11-13 14:07:37,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:37,837 INFO L276 IsEmpty]: Start isEmpty. Operand 4699 states and 6857 transitions. [2024-11-13 14:07:37,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 14:07:37,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:37,838 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:37,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:07:37,838 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:07:37,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:37,839 INFO L85 PathProgramCache]: Analyzing trace with hash -286362880, now seen corresponding path program 1 times [2024-11-13 14:07:37,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:37,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808702889] [2024-11-13 14:07:37,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:37,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:37,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:37,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:37,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808702889] [2024-11-13 14:07:37,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808702889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:37,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:37,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:07:37,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699985153] [2024-11-13 14:07:37,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:37,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:07:37,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:37,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:07:37,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:07:37,988 INFO L87 Difference]: Start difference. First operand 4699 states and 6857 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:38,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:38,046 INFO L93 Difference]: Finished difference Result 4561 states and 6651 transitions. [2024-11-13 14:07:38,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:07:38,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 14:07:38,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:38,059 INFO L225 Difference]: With dead ends: 4561 [2024-11-13 14:07:38,059 INFO L226 Difference]: Without dead ends: 4561 [2024-11-13 14:07:38,059 INFO L431 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 [2024-11-13 14:07:38,060 INFO L432 NwaCegarLoop]: 2856 mSDtfsCounter, 61 mSDsluCounter, 2803 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 5659 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:38,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 5659 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:07:38,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4561 states. [2024-11-13 14:07:38,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4561 to 4561. [2024-11-13 14:07:38,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4561 states, 3726 states have (on average 1.7726784755770264) internal successors, (6605), 4538 states have internal predecessors, (6605), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-13 14:07:38,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4561 states to 4561 states and 6651 transitions. [2024-11-13 14:07:38,133 INFO L78 Accepts]: Start accepts. Automaton has 4561 states and 6651 transitions. Word has length 20 [2024-11-13 14:07:38,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:38,134 INFO L471 AbstractCegarLoop]: Abstraction has 4561 states and 6651 transitions. [2024-11-13 14:07:38,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:38,135 INFO L276 IsEmpty]: Start isEmpty. Operand 4561 states and 6651 transitions. [2024-11-13 14:07:38,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 14:07:38,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:38,135 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:38,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:07:38,136 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr324REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:07:38,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:38,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1356964703, now seen corresponding path program 1 times [2024-11-13 14:07:38,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:38,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186306977] [2024-11-13 14:07:38,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:38,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:38,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:38,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:38,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186306977] [2024-11-13 14:07:38,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186306977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:38,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:38,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:07:38,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347799660] [2024-11-13 14:07:38,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:38,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:07:38,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:38,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:07:38,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:07:38,303 INFO L87 Difference]: Start difference. First operand 4561 states and 6651 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:38,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:38,590 INFO L93 Difference]: Finished difference Result 6298 states and 8964 transitions. [2024-11-13 14:07:38,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:07:38,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 14:07:38,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:38,609 INFO L225 Difference]: With dead ends: 6298 [2024-11-13 14:07:38,609 INFO L226 Difference]: Without dead ends: 6298 [2024-11-13 14:07:38,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:07:38,610 INFO L432 NwaCegarLoop]: 3138 mSDtfsCounter, 1312 mSDsluCounter, 5861 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 8999 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:38,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1318 Valid, 8999 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:07:38,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6298 states. [2024-11-13 14:07:38,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6298 to 4571. [2024-11-13 14:07:38,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4571 states, 3736 states have (on average 1.770610278372591) internal successors, (6615), 4548 states have internal predecessors, (6615), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-13 14:07:38,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4571 states to 4571 states and 6661 transitions. [2024-11-13 14:07:38,753 INFO L78 Accepts]: Start accepts. Automaton has 4571 states and 6661 transitions. Word has length 20 [2024-11-13 14:07:38,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:38,754 INFO L471 AbstractCegarLoop]: Abstraction has 4571 states and 6661 transitions. [2024-11-13 14:07:38,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:38,755 INFO L276 IsEmpty]: Start isEmpty. Operand 4571 states and 6661 transitions. [2024-11-13 14:07:38,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 14:07:38,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:38,755 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:38,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:07:38,756 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:07:38,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:38,757 INFO L85 PathProgramCache]: Analyzing trace with hash -316663813, now seen corresponding path program 1 times [2024-11-13 14:07:38,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:38,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571689181] [2024-11-13 14:07:38,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:38,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:38,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:38,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571689181] [2024-11-13 14:07:38,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571689181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:38,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:38,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:07:38,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977325738] [2024-11-13 14:07:38,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:38,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:07:38,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:38,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:07:38,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:07:38,860 INFO L87 Difference]: Start difference. First operand 4571 states and 6661 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-13 14:07:38,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:38,961 INFO L93 Difference]: Finished difference Result 4542 states and 6611 transitions. [2024-11-13 14:07:38,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:07:38,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2024-11-13 14:07:38,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:38,974 INFO L225 Difference]: With dead ends: 4542 [2024-11-13 14:07:38,974 INFO L226 Difference]: Without dead ends: 4542 [2024-11-13 14:07:38,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:07:38,975 INFO L432 NwaCegarLoop]: 2821 mSDtfsCounter, 41 mSDsluCounter, 5614 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 8435 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:38,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 8435 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:07:38,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4542 states. [2024-11-13 14:07:39,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4542 to 4536. [2024-11-13 14:07:39,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4536 states, 3708 states have (on average 1.7688781014023733) internal successors, (6559), 4513 states have internal predecessors, (6559), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-13 14:07:39,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4536 states to 4536 states and 6605 transitions. [2024-11-13 14:07:39,048 INFO L78 Accepts]: Start accepts. Automaton has 4536 states and 6605 transitions. Word has length 22 [2024-11-13 14:07:39,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:39,048 INFO L471 AbstractCegarLoop]: Abstraction has 4536 states and 6605 transitions. [2024-11-13 14:07:39,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-13 14:07:39,049 INFO L276 IsEmpty]: Start isEmpty. Operand 4536 states and 6605 transitions. [2024-11-13 14:07:39,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 14:07:39,050 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:39,051 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:39,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:07:39,051 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:07:39,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:39,051 INFO L85 PathProgramCache]: Analyzing trace with hash -910003095, now seen corresponding path program 1 times [2024-11-13 14:07:39,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:39,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296593899] [2024-11-13 14:07:39,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:39,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:39,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:39,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296593899] [2024-11-13 14:07:39,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296593899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:39,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:39,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:07:39,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89006220] [2024-11-13 14:07:39,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:39,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:07:39,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:39,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:07:39,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:07:39,393 INFO L87 Difference]: Start difference. First operand 4536 states and 6605 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-11-13 14:07:42,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:42,083 INFO L93 Difference]: Finished difference Result 6833 states and 9754 transitions. [2024-11-13 14:07:42,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:07:42,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2024-11-13 14:07:42,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:42,100 INFO L225 Difference]: With dead ends: 6833 [2024-11-13 14:07:42,100 INFO L226 Difference]: Without dead ends: 6833 [2024-11-13 14:07:42,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:07:42,101 INFO L432 NwaCegarLoop]: 2288 mSDtfsCounter, 2318 mSDsluCounter, 3649 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2322 SdHoareTripleChecker+Valid, 5937 SdHoareTripleChecker+Invalid, 2383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:42,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2322 Valid, 5937 Invalid, 2383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-13 14:07:42,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6833 states. [2024-11-13 14:07:42,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6833 to 4532. [2024-11-13 14:07:42,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4532 states, 3708 states have (on average 1.766720604099245) internal successors, (6551), 4509 states have internal predecessors, (6551), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-13 14:07:42,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4532 states to 4532 states and 6597 transitions. [2024-11-13 14:07:42,183 INFO L78 Accepts]: Start accepts. Automaton has 4532 states and 6597 transitions. Word has length 36 [2024-11-13 14:07:42,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:42,184 INFO L471 AbstractCegarLoop]: Abstraction has 4532 states and 6597 transitions. [2024-11-13 14:07:42,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-11-13 14:07:42,184 INFO L276 IsEmpty]: Start isEmpty. Operand 4532 states and 6597 transitions. [2024-11-13 14:07:42,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-13 14:07:42,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:42,185 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:42,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 14:07:42,186 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr119REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:07:42,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:42,190 INFO L85 PathProgramCache]: Analyzing trace with hash -2023542917, now seen corresponding path program 1 times [2024-11-13 14:07:42,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:42,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040624132] [2024-11-13 14:07:42,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:42,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:42,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:42,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:42,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040624132] [2024-11-13 14:07:42,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040624132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:42,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:42,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:07:42,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975935050] [2024-11-13 14:07:42,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:42,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:07:42,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:42,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:07:42,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:07:42,412 INFO L87 Difference]: Start difference. First operand 4532 states and 6597 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-13 14:07:42,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:42,510 INFO L93 Difference]: Finished difference Result 4532 states and 6589 transitions. [2024-11-13 14:07:42,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:07:42,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 70 [2024-11-13 14:07:42,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:42,522 INFO L225 Difference]: With dead ends: 4532 [2024-11-13 14:07:42,522 INFO L226 Difference]: Without dead ends: 4532 [2024-11-13 14:07:42,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:07:42,524 INFO L432 NwaCegarLoop]: 2816 mSDtfsCounter, 21 mSDsluCounter, 5601 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 8417 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:42,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 8417 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:07:42,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4532 states. [2024-11-13 14:07:42,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4532 to 4532. [2024-11-13 14:07:42,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4532 states, 3708 states have (on average 1.7645631067961165) internal successors, (6543), 4509 states have internal predecessors, (6543), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-13 14:07:42,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4532 states to 4532 states and 6589 transitions. [2024-11-13 14:07:42,590 INFO L78 Accepts]: Start accepts. Automaton has 4532 states and 6589 transitions. Word has length 70 [2024-11-13 14:07:42,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:42,591 INFO L471 AbstractCegarLoop]: Abstraction has 4532 states and 6589 transitions. [2024-11-13 14:07:42,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-13 14:07:42,591 INFO L276 IsEmpty]: Start isEmpty. Operand 4532 states and 6589 transitions. [2024-11-13 14:07:42,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 14:07:42,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:42,596 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2024-11-13 14:07:42,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 14:07:42,597 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr119REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:07:42,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:42,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1526786503, now seen corresponding path program 1 times [2024-11-13 14:07:42,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:42,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132642932] [2024-11-13 14:07:42,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:42,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:42,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:42,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132642932] [2024-11-13 14:07:42,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132642932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:42,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:42,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:07:42,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790675091] [2024-11-13 14:07:42,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:42,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:07:42,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:42,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:07:42,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:07:42,843 INFO L87 Difference]: Start difference. First operand 4532 states and 6589 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-11-13 14:07:42,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:42,975 INFO L93 Difference]: Finished difference Result 6036 states and 8768 transitions. [2024-11-13 14:07:42,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:07:42,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2024-11-13 14:07:42,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:42,990 INFO L225 Difference]: With dead ends: 6036 [2024-11-13 14:07:42,990 INFO L226 Difference]: Without dead ends: 6036 [2024-11-13 14:07:42,991 INFO L431 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 [2024-11-13 14:07:42,994 INFO L432 NwaCegarLoop]: 2831 mSDtfsCounter, 1083 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 5600 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:42,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 5600 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:07:43,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6036 states. [2024-11-13 14:07:43,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6036 to 5385. [2024-11-13 14:07:43,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5385 states, 4557 states have (on average 1.7469826640333552) internal successors, (7961), 5358 states have internal predecessors, (7961), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-13 14:07:43,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5385 states to 5385 states and 8015 transitions. [2024-11-13 14:07:43,075 INFO L78 Accepts]: Start accepts. Automaton has 5385 states and 8015 transitions. Word has length 78 [2024-11-13 14:07:43,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:43,076 INFO L471 AbstractCegarLoop]: Abstraction has 5385 states and 8015 transitions. [2024-11-13 14:07:43,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-11-13 14:07:43,076 INFO L276 IsEmpty]: Start isEmpty. Operand 5385 states and 8015 transitions. [2024-11-13 14:07:43,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-13 14:07:43,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:43,079 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2024-11-13 14:07:43,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 14:07:43,080 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:07:43,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:43,080 INFO L85 PathProgramCache]: Analyzing trace with hash 685950740, now seen corresponding path program 1 times [2024-11-13 14:07:43,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:43,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22178051] [2024-11-13 14:07:43,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:43,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:43,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:43,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:43,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22178051] [2024-11-13 14:07:43,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22178051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:43,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:43,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:07:43,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110440066] [2024-11-13 14:07:43,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:43,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:07:43,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:43,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:07:43,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:07:43,725 INFO L87 Difference]: Start difference. First operand 5385 states and 8015 transitions. Second operand has 6 states, 5 states have (on average 16.2) internal successors, (81), 6 states have internal predecessors, (81), 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) [2024-11-13 14:07:46,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:46,357 INFO L93 Difference]: Finished difference Result 5301 states and 7873 transitions. [2024-11-13 14:07:46,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:07:46,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 6 states have internal predecessors, (81), 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 81 [2024-11-13 14:07:46,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:46,371 INFO L225 Difference]: With dead ends: 5301 [2024-11-13 14:07:46,371 INFO L226 Difference]: Without dead ends: 5301 [2024-11-13 14:07:46,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:07:46,372 INFO L432 NwaCegarLoop]: 1549 mSDtfsCounter, 5247 mSDsluCounter, 3020 mSDsCounter, 0 mSdLazyCounter, 3671 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5257 SdHoareTripleChecker+Valid, 4569 SdHoareTripleChecker+Invalid, 3779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 3671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:46,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5257 Valid, 4569 Invalid, 3779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 3671 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-13 14:07:46,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2024-11-13 14:07:46,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 4759. [2024-11-13 14:07:46,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4759 states, 4015 states have (on average 1.7073474470734744) internal successors, (6855), 4732 states have internal predecessors, (6855), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-13 14:07:46,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4759 states to 4759 states and 6909 transitions. [2024-11-13 14:07:46,470 INFO L78 Accepts]: Start accepts. Automaton has 4759 states and 6909 transitions. Word has length 81 [2024-11-13 14:07:46,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:46,470 INFO L471 AbstractCegarLoop]: Abstraction has 4759 states and 6909 transitions. [2024-11-13 14:07:46,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 6 states have internal predecessors, (81), 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) [2024-11-13 14:07:46,470 INFO L276 IsEmpty]: Start isEmpty. Operand 4759 states and 6909 transitions. [2024-11-13 14:07:46,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-13 14:07:46,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:46,472 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1] [2024-11-13 14:07:46,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 14:07:46,472 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:07:46,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:46,473 INFO L85 PathProgramCache]: Analyzing trace with hash -306097638, now seen corresponding path program 1 times [2024-11-13 14:07:46,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:46,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712061932] [2024-11-13 14:07:46,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:46,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:46,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:46,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:46,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712061932] [2024-11-13 14:07:46,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712061932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:46,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:46,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:07:46,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227202634] [2024-11-13 14:07:46,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:46,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:07:46,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:46,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:07:46,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:07:46,846 INFO L87 Difference]: Start difference. First operand 4759 states and 6909 transitions. Second operand has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 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) [2024-11-13 14:07:48,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:48,739 INFO L93 Difference]: Finished difference Result 4758 states and 6907 transitions. [2024-11-13 14:07:48,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:07:48,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 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 86 [2024-11-13 14:07:48,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:48,751 INFO L225 Difference]: With dead ends: 4758 [2024-11-13 14:07:48,751 INFO L226 Difference]: Without dead ends: 4758 [2024-11-13 14:07:48,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:07:48,752 INFO L432 NwaCegarLoop]: 2743 mSDtfsCounter, 2 mSDsluCounter, 5744 mSDsCounter, 0 mSdLazyCounter, 2492 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8487 SdHoareTripleChecker+Invalid, 2493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:48,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8487 Invalid, 2493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2492 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 14:07:48,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4758 states. [2024-11-13 14:07:48,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4758 to 4758. [2024-11-13 14:07:48,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4758 states, 4015 states have (on average 1.7068493150684931) internal successors, (6853), 4731 states have internal predecessors, (6853), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-13 14:07:48,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4758 states to 4758 states and 6907 transitions. [2024-11-13 14:07:48,857 INFO L78 Accepts]: Start accepts. Automaton has 4758 states and 6907 transitions. Word has length 86 [2024-11-13 14:07:48,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:48,858 INFO L471 AbstractCegarLoop]: Abstraction has 4758 states and 6907 transitions. [2024-11-13 14:07:48,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 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) [2024-11-13 14:07:48,858 INFO L276 IsEmpty]: Start isEmpty. Operand 4758 states and 6907 transitions. [2024-11-13 14:07:48,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-13 14:07:48,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:48,860 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1] [2024-11-13 14:07:48,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 14:07:48,860 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:07:48,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:48,863 INFO L85 PathProgramCache]: Analyzing trace with hash -306097637, now seen corresponding path program 1 times [2024-11-13 14:07:48,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:48,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358161137] [2024-11-13 14:07:48,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:48,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:49,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:49,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:49,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358161137] [2024-11-13 14:07:49,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358161137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:49,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:49,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:07:49,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343975026] [2024-11-13 14:07:49,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:49,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:07:49,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:49,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:07:49,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:07:49,458 INFO L87 Difference]: Start difference. First operand 4758 states and 6907 transitions. Second operand has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 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) [2024-11-13 14:07:51,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:51,657 INFO L93 Difference]: Finished difference Result 4757 states and 6905 transitions. [2024-11-13 14:07:51,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:07:51,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 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 86 [2024-11-13 14:07:51,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:51,664 INFO L225 Difference]: With dead ends: 4757 [2024-11-13 14:07:51,664 INFO L226 Difference]: Without dead ends: 4757 [2024-11-13 14:07:51,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:07:51,665 INFO L432 NwaCegarLoop]: 2743 mSDtfsCounter, 1 mSDsluCounter, 5718 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8461 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:51,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 8461 Invalid, 2516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-13 14:07:51,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2024-11-13 14:07:51,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 4757. [2024-11-13 14:07:51,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4757 states, 4013 states have (on average 1.7072015948168453) internal successors, (6851), 4730 states have internal predecessors, (6851), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-13 14:07:51,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4757 states to 4757 states and 6905 transitions. [2024-11-13 14:07:51,724 INFO L78 Accepts]: Start accepts. Automaton has 4757 states and 6905 transitions. Word has length 86 [2024-11-13 14:07:51,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:51,724 INFO L471 AbstractCegarLoop]: Abstraction has 4757 states and 6905 transitions. [2024-11-13 14:07:51,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 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) [2024-11-13 14:07:51,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4757 states and 6905 transitions. [2024-11-13 14:07:51,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-13 14:07:51,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:51,725 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:51,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 14:07:51,726 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:07:51,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:51,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1501065697, now seen corresponding path program 1 times [2024-11-13 14:07:51,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:51,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616327451] [2024-11-13 14:07:51,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:51,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:52,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:07:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:52,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:52,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616327451] [2024-11-13 14:07:52,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616327451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:52,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:52,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:07:52,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449620441] [2024-11-13 14:07:52,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:52,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:07:52,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:52,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:07:52,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:07:52,069 INFO L87 Difference]: Start difference. First operand 4757 states and 6905 transitions. Second operand has 7 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 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) [2024-11-13 14:07:55,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:55,126 INFO L93 Difference]: Finished difference Result 4775 states and 6938 transitions. [2024-11-13 14:07:55,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:07:55,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 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 94 [2024-11-13 14:07:55,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:55,148 INFO L225 Difference]: With dead ends: 4775 [2024-11-13 14:07:55,150 INFO L226 Difference]: Without dead ends: 4775 [2024-11-13 14:07:55,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:07:55,151 INFO L432 NwaCegarLoop]: 2707 mSDtfsCounter, 31 mSDsluCounter, 10436 mSDsCounter, 0 mSdLazyCounter, 3293 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 13143 SdHoareTripleChecker+Invalid, 3304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:55,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 13143 Invalid, 3304 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 3293 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-13 14:07:55,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4775 states. [2024-11-13 14:07:55,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4775 to 4766. [2024-11-13 14:07:55,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4766 states, 4021 states have (on average 1.7065406615269834) internal successors, (6862), 4737 states have internal predecessors, (6862), 27 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (39), 26 states have call predecessors, (39), 27 states have call successors, (39) [2024-11-13 14:07:55,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4766 states to 4766 states and 6928 transitions. [2024-11-13 14:07:55,280 INFO L78 Accepts]: Start accepts. Automaton has 4766 states and 6928 transitions. Word has length 94 [2024-11-13 14:07:55,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:55,280 INFO L471 AbstractCegarLoop]: Abstraction has 4766 states and 6928 transitions. [2024-11-13 14:07:55,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 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) [2024-11-13 14:07:55,281 INFO L276 IsEmpty]: Start isEmpty. Operand 4766 states and 6928 transitions. [2024-11-13 14:07:55,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-13 14:07:55,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:55,282 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:55,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 14:07:55,282 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:07:55,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:55,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1501065698, now seen corresponding path program 1 times [2024-11-13 14:07:55,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:55,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649326253] [2024-11-13 14:07:55,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:55,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:55,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:07:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:55,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:55,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:55,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649326253] [2024-11-13 14:07:55,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649326253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:55,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:55,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:07:55,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52704801] [2024-11-13 14:07:55,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:55,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:07:55,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:55,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:07:55,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:07:55,955 INFO L87 Difference]: Start difference. First operand 4766 states and 6928 transitions. Second operand has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2024-11-13 14:07:58,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:58,547 INFO L93 Difference]: Finished difference Result 4766 states and 6926 transitions. [2024-11-13 14:07:58,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:07:58,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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 94 [2024-11-13 14:07:58,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:58,561 INFO L225 Difference]: With dead ends: 4766 [2024-11-13 14:07:58,561 INFO L226 Difference]: Without dead ends: 4766 [2024-11-13 14:07:58,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:07:58,561 INFO L432 NwaCegarLoop]: 2714 mSDtfsCounter, 26 mSDsluCounter, 10434 mSDsCounter, 0 mSdLazyCounter, 3248 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 13148 SdHoareTripleChecker+Invalid, 3257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:58,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 13148 Invalid, 3257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3248 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-13 14:07:58,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4766 states. [2024-11-13 14:07:58,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4766 to 4766. [2024-11-13 14:07:58,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4766 states, 4021 states have (on average 1.706043272817707) internal successors, (6860), 4737 states have internal predecessors, (6860), 27 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (39), 26 states have call predecessors, (39), 27 states have call successors, (39) [2024-11-13 14:07:58,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4766 states to 4766 states and 6926 transitions. [2024-11-13 14:07:58,645 INFO L78 Accepts]: Start accepts. Automaton has 4766 states and 6926 transitions. Word has length 94 [2024-11-13 14:07:58,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:58,646 INFO L471 AbstractCegarLoop]: Abstraction has 4766 states and 6926 transitions. [2024-11-13 14:07:58,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2024-11-13 14:07:58,646 INFO L276 IsEmpty]: Start isEmpty. Operand 4766 states and 6926 transitions. [2024-11-13 14:07:58,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-13 14:07:58,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:58,647 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:58,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 14:07:58,647 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:07:58,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:58,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1154054986, now seen corresponding path program 1 times [2024-11-13 14:07:58,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:58,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360129718] [2024-11-13 14:07:58,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:58,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:59,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:07:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:59,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:59,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360129718] [2024-11-13 14:07:59,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360129718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:07:59,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578847122] [2024-11-13 14:07:59,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:59,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:59,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:07:59,318 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:07:59,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:07:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:59,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 14:07:59,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:07:59,780 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 6 treesize of output 5 [2024-11-13 14:08:00,011 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-13 14:08:00,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-13 14:08:00,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 14:08:00,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 14:08:00,423 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:08:00,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 14:08:00,473 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 31 treesize of output 13 [2024-11-13 14:08:00,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:00,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:08:00,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578847122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:08:00,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:08:00,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2024-11-13 14:08:00,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956321240] [2024-11-13 14:08:00,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:08:00,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 14:08:00,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:00,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 14:08:00,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=321, Unknown=5, NotChecked=0, Total=380 [2024-11-13 14:08:00,601 INFO L87 Difference]: Start difference. First operand 4766 states and 6926 transitions. Second operand has 19 states, 16 states have (on average 9.4375) internal successors, (151), 18 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:08:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:08,007 INFO L93 Difference]: Finished difference Result 4773 states and 6932 transitions. [2024-11-13 14:08:08,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:08:08,007 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 9.4375) internal successors, (151), 18 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 95 [2024-11-13 14:08:08,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:08,015 INFO L225 Difference]: With dead ends: 4773 [2024-11-13 14:08:08,015 INFO L226 Difference]: Without dead ends: 4773 [2024-11-13 14:08:08,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=508, Unknown=5, NotChecked=0, Total=600 [2024-11-13 14:08:08,016 INFO L432 NwaCegarLoop]: 1891 mSDtfsCounter, 2653 mSDsluCounter, 22424 mSDsCounter, 0 mSdLazyCounter, 11334 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2671 SdHoareTripleChecker+Valid, 24315 SdHoareTripleChecker+Invalid, 11360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 11334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:08,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2671 Valid, 24315 Invalid, 11360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 11334 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-13 14:08:08,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4773 states. [2024-11-13 14:08:08,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4773 to 4770. [2024-11-13 14:08:08,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4770 states, 4025 states have (on average 1.7050931677018633) internal successors, (6863), 4740 states have internal predecessors, (6863), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-13 14:08:08,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4770 states to 4770 states and 6919 transitions. [2024-11-13 14:08:08,093 INFO L78 Accepts]: Start accepts. Automaton has 4770 states and 6919 transitions. Word has length 95 [2024-11-13 14:08:08,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:08,094 INFO L471 AbstractCegarLoop]: Abstraction has 4770 states and 6919 transitions. [2024-11-13 14:08:08,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 9.4375) internal successors, (151), 18 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:08:08,094 INFO L276 IsEmpty]: Start isEmpty. Operand 4770 states and 6919 transitions. [2024-11-13 14:08:08,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-13 14:08:08,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:08,097 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:08,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:08:08,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 14:08:08,298 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:08:08,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:08,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1154054987, now seen corresponding path program 1 times [2024-11-13 14:08:08,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:08,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748184477] [2024-11-13 14:08:08,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:08,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:09,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:08:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:09,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:09,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:09,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748184477] [2024-11-13 14:08:09,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748184477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:08:09,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423925546] [2024-11-13 14:08:09,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:09,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:09,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:09,332 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:09,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:08:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:09,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 14:08:09,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:09,723 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 6 treesize of output 5 [2024-11-13 14:08:09,891 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 14:08:09,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 14:08:09,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2024-11-13 14:08:09,935 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 13 treesize of output 9 [2024-11-13 14:08:09,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 14:08:10,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 14:08:10,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 14:08:10,224 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:08:10,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 14:08:10,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 14:08:10,283 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 31 treesize of output 13 [2024-11-13 14:08:10,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 14:08:10,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:10,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:08:10,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423925546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:08:10,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:08:10,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2024-11-13 14:08:10,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137531641] [2024-11-13 14:08:10,507 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:08:10,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 14:08:10,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:10,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 14:08:10,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=383, Unknown=14, NotChecked=0, Total=462 [2024-11-13 14:08:10,509 INFO L87 Difference]: Start difference. First operand 4770 states and 6919 transitions. Second operand has 19 states, 16 states have (on average 9.4375) internal successors, (151), 18 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:08:17,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:17,645 INFO L93 Difference]: Finished difference Result 4772 states and 6930 transitions. [2024-11-13 14:08:17,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:08:17,645 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 9.4375) internal successors, (151), 18 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 95 [2024-11-13 14:08:17,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:17,654 INFO L225 Difference]: With dead ends: 4772 [2024-11-13 14:08:17,654 INFO L226 Difference]: Without dead ends: 4772 [2024-11-13 14:08:17,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=580, Unknown=16, NotChecked=0, Total=702 [2024-11-13 14:08:17,655 INFO L432 NwaCegarLoop]: 1897 mSDtfsCounter, 2653 mSDsluCounter, 16485 mSDsCounter, 0 mSdLazyCounter, 11795 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2671 SdHoareTripleChecker+Valid, 18382 SdHoareTripleChecker+Invalid, 11824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 11795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:17,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2671 Valid, 18382 Invalid, 11824 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 11795 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-11-13 14:08:17,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4772 states. [2024-11-13 14:08:17,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4772 to 4760. [2024-11-13 14:08:17,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4760 states, 4017 states have (on average 1.7057505601194922) internal successors, (6852), 4732 states have internal predecessors, (6852), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-13 14:08:17,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4760 states to 4760 states and 6906 transitions. [2024-11-13 14:08:17,722 INFO L78 Accepts]: Start accepts. Automaton has 4760 states and 6906 transitions. Word has length 95 [2024-11-13 14:08:17,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:17,722 INFO L471 AbstractCegarLoop]: Abstraction has 4760 states and 6906 transitions. [2024-11-13 14:08:17,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 9.4375) internal successors, (151), 18 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:08:17,722 INFO L276 IsEmpty]: Start isEmpty. Operand 4760 states and 6906 transitions. [2024-11-13 14:08:17,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-13 14:08:17,723 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:17,723 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:17,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:08:17,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:17,927 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:08:17,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:17,928 INFO L85 PathProgramCache]: Analyzing trace with hash -950646245, now seen corresponding path program 1 times [2024-11-13 14:08:17,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:17,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369632800] [2024-11-13 14:08:17,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:17,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:18,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:08:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:18,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:18,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:18,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369632800] [2024-11-13 14:08:18,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369632800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:18,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:18,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-13 14:08:18,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479689839] [2024-11-13 14:08:18,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:18,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 14:08:18,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:18,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 14:08:18,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-13 14:08:18,634 INFO L87 Difference]: Start difference. First operand 4760 states and 6906 transitions. Second operand has 14 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 states have internal predecessors, (95), 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) [2024-11-13 14:08:23,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:23,667 INFO L93 Difference]: Finished difference Result 4779 states and 6938 transitions. [2024-11-13 14:08:23,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:08:23,667 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 states have internal predecessors, (95), 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 97 [2024-11-13 14:08:23,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:23,674 INFO L225 Difference]: With dead ends: 4779 [2024-11-13 14:08:23,674 INFO L226 Difference]: Without dead ends: 4779 [2024-11-13 14:08:23,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-11-13 14:08:23,675 INFO L432 NwaCegarLoop]: 1891 mSDtfsCounter, 2669 mSDsluCounter, 16830 mSDsCounter, 0 mSdLazyCounter, 8713 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2687 SdHoareTripleChecker+Valid, 18721 SdHoareTripleChecker+Invalid, 8736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 8713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:23,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2687 Valid, 18721 Invalid, 8736 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 8713 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-13 14:08:23,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4779 states. [2024-11-13 14:08:23,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4779 to 4775. [2024-11-13 14:08:23,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4775 states, 4031 states have (on average 1.7040436616224262) internal successors, (6869), 4745 states have internal predecessors, (6869), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-13 14:08:23,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4775 states to 4775 states and 6925 transitions. [2024-11-13 14:08:23,735 INFO L78 Accepts]: Start accepts. Automaton has 4775 states and 6925 transitions. Word has length 97 [2024-11-13 14:08:23,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:23,736 INFO L471 AbstractCegarLoop]: Abstraction has 4775 states and 6925 transitions. [2024-11-13 14:08:23,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 states have internal predecessors, (95), 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) [2024-11-13 14:08:23,736 INFO L276 IsEmpty]: Start isEmpty. Operand 4775 states and 6925 transitions. [2024-11-13 14:08:23,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-13 14:08:23,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:23,737 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:23,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-13 14:08:23,737 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:08:23,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:23,738 INFO L85 PathProgramCache]: Analyzing trace with hash -950646244, now seen corresponding path program 1 times [2024-11-13 14:08:23,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:23,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036002886] [2024-11-13 14:08:23,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:23,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:24,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:08:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:24,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:24,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036002886] [2024-11-13 14:08:24,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036002886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:24,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:24,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-13 14:08:24,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270489258] [2024-11-13 14:08:24,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:24,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 14:08:24,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:24,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 14:08:24,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:08:24,633 INFO L87 Difference]: Start difference. First operand 4775 states and 6925 transitions. Second operand has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2024-11-13 14:08:29,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:29,916 INFO L93 Difference]: Finished difference Result 4778 states and 6936 transitions. [2024-11-13 14:08:29,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:08:29,916 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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 97 [2024-11-13 14:08:29,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:29,924 INFO L225 Difference]: With dead ends: 4778 [2024-11-13 14:08:29,924 INFO L226 Difference]: Without dead ends: 4778 [2024-11-13 14:08:29,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:08:29,925 INFO L432 NwaCegarLoop]: 1898 mSDtfsCounter, 2684 mSDsluCounter, 11635 mSDsCounter, 0 mSdLazyCounter, 8375 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 SdHoareTripleChecker+Valid, 13533 SdHoareTripleChecker+Invalid, 8397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 8375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:29,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2702 Valid, 13533 Invalid, 8397 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 8375 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-13 14:08:29,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4778 states. [2024-11-13 14:08:29,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4778 to 4775. [2024-11-13 14:08:29,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4775 states, 4031 states have (on average 1.7035475068221284) internal successors, (6867), 4745 states have internal predecessors, (6867), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-13 14:08:29,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4775 states to 4775 states and 6923 transitions. [2024-11-13 14:08:29,987 INFO L78 Accepts]: Start accepts. Automaton has 4775 states and 6923 transitions. Word has length 97 [2024-11-13 14:08:29,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:29,988 INFO L471 AbstractCegarLoop]: Abstraction has 4775 states and 6923 transitions. [2024-11-13 14:08:29,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2024-11-13 14:08:29,988 INFO L276 IsEmpty]: Start isEmpty. Operand 4775 states and 6923 transitions. [2024-11-13 14:08:29,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-13 14:08:29,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:29,989 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:29,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-13 14:08:29,990 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:08:29,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:29,990 INFO L85 PathProgramCache]: Analyzing trace with hash -760456174, now seen corresponding path program 1 times [2024-11-13 14:08:29,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:29,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368811650] [2024-11-13 14:08:29,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:29,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:30,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:08:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:30,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:30,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:30,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368811650] [2024-11-13 14:08:30,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368811650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:08:30,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846487618] [2024-11-13 14:08:30,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:30,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:30,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:30,684 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:30,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:08:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:31,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 14:08:31,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:31,029 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 6 treesize of output 5 [2024-11-13 14:08:31,165 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-13 14:08:31,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-13 14:08:31,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 14:08:31,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 14:08:31,501 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:08:31,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 14:08:31,613 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:08:31,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 14:08:31,632 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 31 treesize of output 13 [2024-11-13 14:08:31,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:31,674 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:08:31,685 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1104 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1104) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-13 14:08:31,693 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1104 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1104) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2024-11-13 14:08:31,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846487618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:08:31,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:08:31,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2024-11-13 14:08:31,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422064488] [2024-11-13 14:08:31,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:08:31,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 14:08:31,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:31,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 14:08:31,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=423, Unknown=16, NotChecked=86, Total=600 [2024-11-13 14:08:31,778 INFO L87 Difference]: Start difference. First operand 4775 states and 6923 transitions. Second operand has 22 states, 19 states have (on average 8.263157894736842) internal successors, (157), 21 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:08:39,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:39,079 INFO L93 Difference]: Finished difference Result 4777 states and 6934 transitions. [2024-11-13 14:08:39,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:08:39,083 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 8.263157894736842) internal successors, (157), 21 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 98 [2024-11-13 14:08:39,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:39,088 INFO L225 Difference]: With dead ends: 4777 [2024-11-13 14:08:39,088 INFO L226 Difference]: Without dead ends: 4777 [2024-11-13 14:08:39,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=591, Unknown=17, NotChecked=102, Total=812 [2024-11-13 14:08:39,089 INFO L432 NwaCegarLoop]: 1890 mSDtfsCounter, 2648 mSDsluCounter, 22423 mSDsCounter, 0 mSdLazyCounter, 11349 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2666 SdHoareTripleChecker+Valid, 24313 SdHoareTripleChecker+Invalid, 11372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 11349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:39,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2666 Valid, 24313 Invalid, 11372 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 11349 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-11-13 14:08:39,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2024-11-13 14:08:39,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4774. [2024-11-13 14:08:39,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4774 states, 4031 states have (on average 1.7030513520218309) internal successors, (6865), 4744 states have internal predecessors, (6865), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-13 14:08:39,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4774 states to 4774 states and 6921 transitions. [2024-11-13 14:08:39,150 INFO L78 Accepts]: Start accepts. Automaton has 4774 states and 6921 transitions. Word has length 98 [2024-11-13 14:08:39,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:39,150 INFO L471 AbstractCegarLoop]: Abstraction has 4774 states and 6921 transitions. [2024-11-13 14:08:39,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 8.263157894736842) internal successors, (157), 21 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:08:39,151 INFO L276 IsEmpty]: Start isEmpty. Operand 4774 states and 6921 transitions. [2024-11-13 14:08:39,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-13 14:08:39,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:39,152 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:39,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:08:39,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:39,353 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:08:39,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:39,353 INFO L85 PathProgramCache]: Analyzing trace with hash -760456173, now seen corresponding path program 1 times [2024-11-13 14:08:39,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:39,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778225054] [2024-11-13 14:08:39,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:39,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:40,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:08:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:40,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:40,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:40,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778225054] [2024-11-13 14:08:40,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778225054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:08:40,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914738545] [2024-11-13 14:08:40,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:40,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:40,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:40,367 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:40,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:08:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:40,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 14:08:40,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:40,722 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 6 treesize of output 5 [2024-11-13 14:08:40,864 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 [2024-11-13 14:08:40,872 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 14:08:40,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 14:08:40,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 14:08:40,910 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 13 treesize of output 9 [2024-11-13 14:08:41,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 14:08:41,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 14:08:41,169 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:08:41,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 14:08:41,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 14:08:41,273 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:08:41,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 14:08:41,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 14:08:41,300 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 31 treesize of output 13 [2024-11-13 14:08:41,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 14:08:41,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:41,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:08:41,416 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1264 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1264) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4))) (forall ((v_ArrVal_1265 (Array Int Int)) (v_ArrVal_1264 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1264) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1265) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 14:08:41,431 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1264 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1264) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4))) (forall ((v_ArrVal_1265 (Array Int Int)) (v_ArrVal_1264 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1264) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1265) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2024-11-13 14:08:41,501 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1264 (Array Int Int)) (v_ArrVal_1271 (Array Int Int)) (v_ArrVal_1270 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1270) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1271) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1264) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4))) (forall ((v_ArrVal_1265 (Array Int Int)) (v_ArrVal_1264 (Array Int Int)) (v_ArrVal_1271 (Array Int Int)) (v_ArrVal_1270 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1271))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (<= (+ 8 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1270) .cse1 v_ArrVal_1264) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1265) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))))) is different from false [2024-11-13 14:08:41,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914738545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:08:41,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:08:41,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2024-11-13 14:08:41,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232799154] [2024-11-13 14:08:41,504 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:08:41,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 14:08:41,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:41,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 14:08:41,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=438, Unknown=3, NotChecked=132, Total=650 [2024-11-13 14:08:41,505 INFO L87 Difference]: Start difference. First operand 4774 states and 6921 transitions. Second operand has 21 states, 18 states have (on average 8.722222222222221) internal successors, (157), 20 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:08:53,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:53,373 INFO L93 Difference]: Finished difference Result 4776 states and 6932 transitions. [2024-11-13 14:08:53,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:08:53,374 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 8.722222222222221) internal successors, (157), 20 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 98 [2024-11-13 14:08:53,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:53,379 INFO L225 Difference]: With dead ends: 4776 [2024-11-13 14:08:53,379 INFO L226 Difference]: Without dead ends: 4776 [2024-11-13 14:08:53,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=694, Unknown=3, NotChecked=168, Total=992 [2024-11-13 14:08:53,380 INFO L432 NwaCegarLoop]: 1896 mSDtfsCounter, 2672 mSDsluCounter, 23660 mSDsCounter, 0 mSdLazyCounter, 18247 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2690 SdHoareTripleChecker+Valid, 25556 SdHoareTripleChecker+Invalid, 18291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 18247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:53,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2690 Valid, 25556 Invalid, 18291 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 18247 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2024-11-13 14:08:53,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4776 states. [2024-11-13 14:08:53,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4776 to 4758. [2024-11-13 14:08:53,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4758 states, 4017 states have (on average 1.704754792133433) internal successors, (6848), 4730 states have internal predecessors, (6848), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-13 14:08:53,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4758 states to 4758 states and 6902 transitions. [2024-11-13 14:08:53,442 INFO L78 Accepts]: Start accepts. Automaton has 4758 states and 6902 transitions. Word has length 98 [2024-11-13 14:08:53,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:53,442 INFO L471 AbstractCegarLoop]: Abstraction has 4758 states and 6902 transitions. [2024-11-13 14:08:53,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 8.722222222222221) internal successors, (157), 20 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:08:53,443 INFO L276 IsEmpty]: Start isEmpty. Operand 4758 states and 6902 transitions. [2024-11-13 14:08:53,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-13 14:08:53,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:53,444 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:53,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:08:53,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-13 14:08:53,646 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:08:53,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:53,646 INFO L85 PathProgramCache]: Analyzing trace with hash 312732360, now seen corresponding path program 1 times [2024-11-13 14:08:53,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:53,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925827544] [2024-11-13 14:08:53,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:53,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:54,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:08:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:54,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:54,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:54,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925827544] [2024-11-13 14:08:54,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925827544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:54,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:54,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-13 14:08:54,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845865816] [2024-11-13 14:08:54,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:54,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 14:08:54,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:54,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 14:08:54,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-13 14:08:54,318 INFO L87 Difference]: Start difference. First operand 4758 states and 6902 transitions. Second operand has 15 states, 13 states have (on average 7.538461538461538) internal successors, (98), 14 states have internal predecessors, (98), 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) [2024-11-13 14:08:58,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:58,681 INFO L93 Difference]: Finished difference Result 4783 states and 6940 transitions. [2024-11-13 14:08:58,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:08:58,681 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.538461538461538) internal successors, (98), 14 states have internal predecessors, (98), 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 100 [2024-11-13 14:08:58,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:58,686 INFO L225 Difference]: With dead ends: 4783 [2024-11-13 14:08:58,686 INFO L226 Difference]: Without dead ends: 4783 [2024-11-13 14:08:58,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-11-13 14:08:58,687 INFO L432 NwaCegarLoop]: 1890 mSDtfsCounter, 2692 mSDsluCounter, 14923 mSDsCounter, 0 mSdLazyCounter, 7809 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2710 SdHoareTripleChecker+Valid, 16813 SdHoareTripleChecker+Invalid, 7833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 7809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:58,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2710 Valid, 16813 Invalid, 7833 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 7809 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-13 14:08:58,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2024-11-13 14:08:58,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 4779. [2024-11-13 14:08:58,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4779 states, 4037 states have (on average 1.7020064404260589) internal successors, (6871), 4749 states have internal predecessors, (6871), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-13 14:08:58,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4779 states to 4779 states and 6927 transitions. [2024-11-13 14:08:58,752 INFO L78 Accepts]: Start accepts. Automaton has 4779 states and 6927 transitions. Word has length 100 [2024-11-13 14:08:58,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:58,753 INFO L471 AbstractCegarLoop]: Abstraction has 4779 states and 6927 transitions. [2024-11-13 14:08:58,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.538461538461538) internal successors, (98), 14 states have internal predecessors, (98), 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) [2024-11-13 14:08:58,753 INFO L276 IsEmpty]: Start isEmpty. Operand 4779 states and 6927 transitions. [2024-11-13 14:08:58,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-13 14:08:58,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:58,758 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:58,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-13 14:08:58,759 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:08:58,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:58,759 INFO L85 PathProgramCache]: Analyzing trace with hash 312732361, now seen corresponding path program 1 times [2024-11-13 14:08:58,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:58,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724482823] [2024-11-13 14:08:58,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:58,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:59,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:08:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:59,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:59,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:59,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724482823] [2024-11-13 14:08:59,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724482823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:59,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:59,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-13 14:08:59,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158128337] [2024-11-13 14:08:59,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:59,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 14:08:59,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:59,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 14:08:59,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:08:59,659 INFO L87 Difference]: Start difference. First operand 4779 states and 6927 transitions. Second operand has 13 states, 12 states have (on average 8.166666666666666) internal successors, (98), 12 states have internal predecessors, (98), 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) [2024-11-13 14:09:05,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:09:05,199 INFO L93 Difference]: Finished difference Result 4782 states and 6938 transitions. [2024-11-13 14:09:05,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:09:05,200 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.166666666666666) internal successors, (98), 12 states have internal predecessors, (98), 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 100 [2024-11-13 14:09:05,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:09:05,204 INFO L225 Difference]: With dead ends: 4782 [2024-11-13 14:09:05,204 INFO L226 Difference]: Without dead ends: 4782 [2024-11-13 14:09:05,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-13 14:09:05,205 INFO L432 NwaCegarLoop]: 1897 mSDtfsCounter, 2666 mSDsluCounter, 13479 mSDsCounter, 0 mSdLazyCounter, 9251 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2684 SdHoareTripleChecker+Valid, 15376 SdHoareTripleChecker+Invalid, 9273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 9251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:09:05,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2684 Valid, 15376 Invalid, 9273 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 9251 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-13 14:09:05,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4782 states. [2024-11-13 14:09:05,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4782 to 4779. [2024-11-13 14:09:05,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4779 states, 4037 states have (on average 1.7015110230369086) internal successors, (6869), 4749 states have internal predecessors, (6869), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-13 14:09:05,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4779 states to 4779 states and 6925 transitions. [2024-11-13 14:09:05,267 INFO L78 Accepts]: Start accepts. Automaton has 4779 states and 6925 transitions. Word has length 100 [2024-11-13 14:09:05,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:09:05,268 INFO L471 AbstractCegarLoop]: Abstraction has 4779 states and 6925 transitions. [2024-11-13 14:09:05,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.166666666666666) internal successors, (98), 12 states have internal predecessors, (98), 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) [2024-11-13 14:09:05,268 INFO L276 IsEmpty]: Start isEmpty. Operand 4779 states and 6925 transitions. [2024-11-13 14:09:05,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-13 14:09:05,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:09:05,269 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:09:05,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-13 14:09:05,269 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:09:05,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:09:05,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1203274097, now seen corresponding path program 1 times [2024-11-13 14:09:05,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:09:05,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682993591] [2024-11-13 14:09:05,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:05,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:09:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:05,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:09:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:09:05,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:09:05,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682993591] [2024-11-13 14:09:05,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682993591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:09:05,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705092459] [2024-11-13 14:09:05,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:05,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:05,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:09:05,989 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:09:05,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:09:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:06,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 14:09:06,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:09:06,366 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 6 treesize of output 5 [2024-11-13 14:09:06,508 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-13 14:09:06,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-13 14:09:06,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 14:09:06,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 14:09:06,809 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:09:06,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 14:09:06,922 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:09:06,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 14:09:06,997 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:09:06,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 14:09:07,014 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 31 treesize of output 13 [2024-11-13 14:09:07,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:09:07,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:09:07,063 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1583 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_1583) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-13 14:09:07,105 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1583 (Array Int Int)) (v_ArrVal_1582 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1582))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1583)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-13 14:09:07,113 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1583 (Array Int Int)) (v_ArrVal_1582 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1582))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1583)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-13 14:09:07,148 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1586 (Array Int Int)) (v_ArrVal_1583 (Array Int Int)) (v_ArrVal_1582 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1586))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1582)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1583)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-13 14:09:07,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705092459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:09:07,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:09:07,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 23 [2024-11-13 14:09:07,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728449414] [2024-11-13 14:09:07,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:09:07,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 14:09:07,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:09:07,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 14:09:07,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=507, Unknown=12, NotChecked=196, Total=812 [2024-11-13 14:09:07,151 INFO L87 Difference]: Start difference. First operand 4779 states and 6925 transitions. Second operand has 24 states, 21 states have (on average 7.761904761904762) internal successors, (163), 23 states have internal predecessors, (163), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:09:14,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:09:14,787 INFO L93 Difference]: Finished difference Result 4781 states and 6936 transitions. [2024-11-13 14:09:14,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:09:14,788 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 7.761904761904762) internal successors, (163), 23 states have internal predecessors, (163), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 101 [2024-11-13 14:09:14,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:09:14,792 INFO L225 Difference]: With dead ends: 4781 [2024-11-13 14:09:14,792 INFO L226 Difference]: Without dead ends: 4781 [2024-11-13 14:09:14,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=689, Unknown=14, NotChecked=228, Total=1056 [2024-11-13 14:09:14,793 INFO L432 NwaCegarLoop]: 1889 mSDtfsCounter, 2641 mSDsluCounter, 26113 mSDsCounter, 0 mSdLazyCounter, 13093 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2659 SdHoareTripleChecker+Valid, 28002 SdHoareTripleChecker+Invalid, 13116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 13093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:09:14,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2659 Valid, 28002 Invalid, 13116 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 13093 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-13 14:09:14,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4781 states. [2024-11-13 14:09:14,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4781 to 4778. [2024-11-13 14:09:14,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4778 states, 4037 states have (on average 1.7010156056477583) internal successors, (6867), 4748 states have internal predecessors, (6867), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-13 14:09:14,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4778 states to 4778 states and 6923 transitions. [2024-11-13 14:09:14,870 INFO L78 Accepts]: Start accepts. Automaton has 4778 states and 6923 transitions. Word has length 101 [2024-11-13 14:09:14,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:09:14,870 INFO L471 AbstractCegarLoop]: Abstraction has 4778 states and 6923 transitions. [2024-11-13 14:09:14,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 7.761904761904762) internal successors, (163), 23 states have internal predecessors, (163), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:09:14,870 INFO L276 IsEmpty]: Start isEmpty. Operand 4778 states and 6923 transitions. [2024-11-13 14:09:14,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-13 14:09:14,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:09:14,871 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:09:14,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 14:09:15,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 14:09:15,072 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:09:15,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:09:15,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1203274098, now seen corresponding path program 1 times [2024-11-13 14:09:15,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:09:15,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95856953] [2024-11-13 14:09:15,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:15,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:09:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:15,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:09:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:16,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:09:16,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:09:16,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95856953] [2024-11-13 14:09:16,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95856953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:09:16,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729688288] [2024-11-13 14:09:16,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:16,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:16,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:09:16,005 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:09:16,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:09:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:16,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-13 14:09:16,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:09:16,393 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 6 treesize of output 5 [2024-11-13 14:09:16,516 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 14:09:16,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 14:09:16,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2024-11-13 14:09:16,537 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 13 treesize of output 9 [2024-11-13 14:09:16,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 14:09:16,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 14:09:16,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 14:09:16,716 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:09:16,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 14:09:16,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 14:09:16,808 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:09:16,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 14:09:16,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 14:09:16,876 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:09:16,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 14:09:16,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 14:09:16,904 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 31 treesize of output 13 [2024-11-13 14:09:16,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 14:09:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:09:16,914 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:09:17,049 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1758 (Array Int Int)) (v_ArrVal_1757 (Array Int Int))) (<= (+ 12 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1757) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1758) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_1757 (Array Int Int))) (<= 0 (+ 8 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1757) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2024-11-13 14:09:17,068 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1758 (Array Int Int)) (v_ArrVal_1757 (Array Int Int)) (v_ArrVal_1756 (Array Int Int)) (v_ArrVal_1755 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1756))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1755) .cse0 v_ArrVal_1757) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 12) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_1758) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1757 (Array Int Int)) (v_ArrVal_1756 (Array Int Int)) (v_ArrVal_1755 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1755) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1756) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1757) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8))))) is different from false [2024-11-13 14:09:17,088 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1757 (Array Int Int)) (v_ArrVal_1756 (Array Int Int)) (v_ArrVal_1755 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1755) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1756) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1757) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8))) (forall ((v_ArrVal_1758 (Array Int Int)) (v_ArrVal_1757 (Array Int Int)) (v_ArrVal_1756 (Array Int Int)) (v_ArrVal_1755 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1756))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1755) .cse2 v_ArrVal_1757) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 12) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_1758) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))) is different from false [2024-11-13 14:09:17,146 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1758 (Array Int Int)) (v_ArrVal_1757 (Array Int Int)) (v_ArrVal_1756 (Array Int Int)) (v_ArrVal_1755 (Array Int Int)) (v_ArrVal_1764 (Array Int Int)) (v_ArrVal_1763 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1764))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_1756))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1763) .cse0 v_ArrVal_1755) .cse1 v_ArrVal_1757) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 12) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_1758) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_1757 (Array Int Int)) (v_ArrVal_1756 (Array Int Int)) (v_ArrVal_1755 (Array Int Int)) (v_ArrVal_1764 (Array Int Int)) (v_ArrVal_1763 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1764))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1763) .cse5 v_ArrVal_1755) (select (select (store .cse6 .cse5 v_ArrVal_1756) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_1757))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 8))))) is different from false [2024-11-13 14:09:17,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729688288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:09:17,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:09:17,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 18 [2024-11-13 14:09:17,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962837152] [2024-11-13 14:09:17,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:09:17,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 14:09:17,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:09:17,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 14:09:17,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=385, Unknown=13, NotChecked=172, Total=650 [2024-11-13 14:09:17,150 INFO L87 Difference]: Start difference. First operand 4778 states and 6923 transitions. Second operand has 19 states, 17 states have (on average 9.058823529411764) internal successors, (154), 18 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:09:25,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:09:25,201 INFO L93 Difference]: Finished difference Result 4780 states and 6934 transitions. [2024-11-13 14:09:25,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:09:25,202 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 9.058823529411764) internal successors, (154), 18 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 101 [2024-11-13 14:09:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:09:25,205 INFO L225 Difference]: With dead ends: 4780 [2024-11-13 14:09:25,205 INFO L226 Difference]: Without dead ends: 4780 [2024-11-13 14:09:25,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=133, Invalid=678, Unknown=17, NotChecked=228, Total=1056 [2024-11-13 14:09:25,206 INFO L432 NwaCegarLoop]: 1895 mSDtfsCounter, 2647 mSDsluCounter, 18014 mSDsCounter, 0 mSdLazyCounter, 12957 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2665 SdHoareTripleChecker+Valid, 19909 SdHoareTripleChecker+Invalid, 12982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 12957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:09:25,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2665 Valid, 19909 Invalid, 12982 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 12957 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-11-13 14:09:25,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4780 states. [2024-11-13 14:09:25,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4780 to 4756. [2024-11-13 14:09:25,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4756 states, 4017 states have (on average 1.7037590241473737) internal successors, (6844), 4728 states have internal predecessors, (6844), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-13 14:09:25,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4756 states to 4756 states and 6898 transitions. [2024-11-13 14:09:25,248 INFO L78 Accepts]: Start accepts. Automaton has 4756 states and 6898 transitions. Word has length 101 [2024-11-13 14:09:25,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:09:25,248 INFO L471 AbstractCegarLoop]: Abstraction has 4756 states and 6898 transitions. [2024-11-13 14:09:25,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 9.058823529411764) internal successors, (154), 18 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:09:25,248 INFO L276 IsEmpty]: Start isEmpty. Operand 4756 states and 6898 transitions. [2024-11-13 14:09:25,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 14:09:25,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:09:25,249 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:09:25,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:09:25,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 14:09:25,450 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr94REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:09:25,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:09:25,450 INFO L85 PathProgramCache]: Analyzing trace with hash 826346018, now seen corresponding path program 1 times [2024-11-13 14:09:25,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:09:25,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648160955] [2024-11-13 14:09:25,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:25,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:09:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:26,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:09:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:26,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:09:26,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:09:26,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648160955] [2024-11-13 14:09:26,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648160955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:09:26,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:09:26,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-13 14:09:26,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280299095] [2024-11-13 14:09:26,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:09:26,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 14:09:26,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:09:26,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 14:09:26,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-13 14:09:26,106 INFO L87 Difference]: Start difference. First operand 4756 states and 6898 transitions. Second operand has 14 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 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) [2024-11-13 14:09:29,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:09:29,903 INFO L93 Difference]: Finished difference Result 4787 states and 6942 transitions. [2024-11-13 14:09:29,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:09:29,904 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 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 103 [2024-11-13 14:09:29,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:09:29,909 INFO L225 Difference]: With dead ends: 4787 [2024-11-13 14:09:29,909 INFO L226 Difference]: Without dead ends: 4787 [2024-11-13 14:09:29,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-11-13 14:09:29,911 INFO L432 NwaCegarLoop]: 1895 mSDtfsCounter, 2690 mSDsluCounter, 13102 mSDsCounter, 0 mSdLazyCounter, 6930 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2708 SdHoareTripleChecker+Valid, 14997 SdHoareTripleChecker+Invalid, 6953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 6930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:09:29,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2708 Valid, 14997 Invalid, 6953 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 6930 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-13 14:09:29,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4787 states. [2024-11-13 14:09:29,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4787 to 4783. [2024-11-13 14:09:29,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4783 states, 4043 states have (on average 1.6999752658916647) internal successors, (6873), 4753 states have internal predecessors, (6873), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-13 14:09:29,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4783 states to 4783 states and 6929 transitions. [2024-11-13 14:09:29,964 INFO L78 Accepts]: Start accepts. Automaton has 4783 states and 6929 transitions. Word has length 103 [2024-11-13 14:09:29,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:09:29,965 INFO L471 AbstractCegarLoop]: Abstraction has 4783 states and 6929 transitions. [2024-11-13 14:09:29,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 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) [2024-11-13 14:09:29,966 INFO L276 IsEmpty]: Start isEmpty. Operand 4783 states and 6929 transitions. [2024-11-13 14:09:29,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 14:09:29,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:09:29,967 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:09:29,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-13 14:09:29,967 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:09:29,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:09:29,967 INFO L85 PathProgramCache]: Analyzing trace with hash 826346019, now seen corresponding path program 1 times [2024-11-13 14:09:29,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:09:29,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782484024] [2024-11-13 14:09:29,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:29,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:09:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:30,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:09:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:30,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:09:30,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:09:30,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782484024] [2024-11-13 14:09:30,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782484024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:09:30,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:09:31,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-13 14:09:31,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058635907] [2024-11-13 14:09:31,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:09:31,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 14:09:31,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:09:31,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 14:09:31,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-13 14:09:31,001 INFO L87 Difference]: Start difference. First operand 4783 states and 6929 transitions. Second operand has 14 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 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) [2024-11-13 14:09:35,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:09:35,362 INFO L93 Difference]: Finished difference Result 4786 states and 6940 transitions. [2024-11-13 14:09:35,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:09:35,363 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 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 103 [2024-11-13 14:09:35,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:09:35,369 INFO L225 Difference]: With dead ends: 4786 [2024-11-13 14:09:35,369 INFO L226 Difference]: Without dead ends: 4786 [2024-11-13 14:09:35,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-13 14:09:35,370 INFO L432 NwaCegarLoop]: 1896 mSDtfsCounter, 2685 mSDsluCounter, 10105 mSDsCounter, 0 mSdLazyCounter, 7188 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2703 SdHoareTripleChecker+Valid, 12001 SdHoareTripleChecker+Invalid, 7227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 7188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:09:35,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2703 Valid, 12001 Invalid, 7227 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [39 Valid, 7188 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-13 14:09:35,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4786 states. [2024-11-13 14:09:35,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4786 to 4783. [2024-11-13 14:09:35,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4783 states, 4043 states have (on average 1.6994805837249567) internal successors, (6871), 4753 states have internal predecessors, (6871), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-13 14:09:35,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4783 states to 4783 states and 6927 transitions. [2024-11-13 14:09:35,426 INFO L78 Accepts]: Start accepts. Automaton has 4783 states and 6927 transitions. Word has length 103 [2024-11-13 14:09:35,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:09:35,426 INFO L471 AbstractCegarLoop]: Abstraction has 4783 states and 6927 transitions. [2024-11-13 14:09:35,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 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) [2024-11-13 14:09:35,426 INFO L276 IsEmpty]: Start isEmpty. Operand 4783 states and 6927 transitions. [2024-11-13 14:09:35,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-13 14:09:35,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:09:35,427 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:09:35,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-13 14:09:35,428 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr94REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:09:35,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:09:35,428 INFO L85 PathProgramCache]: Analyzing trace with hash 942245593, now seen corresponding path program 1 times [2024-11-13 14:09:35,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:09:35,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729228005] [2024-11-13 14:09:35,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:35,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:09:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:36,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:09:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:09:36,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:09:36,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729228005] [2024-11-13 14:09:36,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729228005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:09:36,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380294843] [2024-11-13 14:09:36,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:36,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:36,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:09:36,225 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:09:36,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:09:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:36,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 14:09:36,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:09:36,606 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 6 treesize of output 5 [2024-11-13 14:09:36,725 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-13 14:09:36,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-13 14:09:36,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 14:09:36,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 14:09:37,027 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:09:37,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 14:09:37,147 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:09:37,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 14:09:37,249 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:09:37,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 14:09:37,313 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:09:37,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 14:09:37,329 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 31 treesize of output 13 [2024-11-13 14:09:37,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:09:37,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:09:37,373 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2101 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem59#1.base| v_ArrVal_2101) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-13 14:09:37,415 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2101 (Array Int Int)) (v_ArrVal_2100 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_2100))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2101)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-13 14:09:37,469 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2101 (Array Int Int)) (v_ArrVal_2100 (Array Int Int)) (v_ArrVal_2099 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2099))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2100)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2101)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-13 14:09:40,071 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2104 (Array Int Int)) (v_ArrVal_2101 (Array Int Int)) (v_ArrVal_2100 (Array Int Int)) (v_ArrVal_2099 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_2104))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2099)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2100)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2101)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-13 14:09:40,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380294843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:09:40,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:09:40,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 25 [2024-11-13 14:09:40,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788686107] [2024-11-13 14:09:40,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:09:40,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 14:09:40,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:09:40,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 14:09:40,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=668, Unknown=27, NotChecked=228, Total=1056 [2024-11-13 14:09:40,075 INFO L87 Difference]: Start difference. First operand 4783 states and 6927 transitions. Second operand has 26 states, 23 states have (on average 7.3478260869565215) internal successors, (169), 25 states have internal predecessors, (169), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:09:51,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:09:51,724 INFO L93 Difference]: Finished difference Result 4785 states and 6938 transitions. [2024-11-13 14:09:51,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 14:09:51,725 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 7.3478260869565215) internal successors, (169), 25 states have internal predecessors, (169), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 104 [2024-11-13 14:09:51,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:09:51,729 INFO L225 Difference]: With dead ends: 4785 [2024-11-13 14:09:51,729 INFO L226 Difference]: Without dead ends: 4785 [2024-11-13 14:09:51,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=163, Invalid=881, Unknown=28, NotChecked=260, Total=1332 [2024-11-13 14:09:51,730 INFO L432 NwaCegarLoop]: 1888 mSDtfsCounter, 2636 mSDsluCounter, 24227 mSDsCounter, 0 mSdLazyCounter, 12134 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2654 SdHoareTripleChecker+Valid, 26115 SdHoareTripleChecker+Invalid, 12158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 12134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:09:51,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2654 Valid, 26115 Invalid, 12158 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 12134 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2024-11-13 14:09:51,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4785 states. [2024-11-13 14:09:51,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4785 to 4782. [2024-11-13 14:09:51,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4782 states, 4043 states have (on average 1.698985901558249) internal successors, (6869), 4752 states have internal predecessors, (6869), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-13 14:09:51,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4782 states to 4782 states and 6925 transitions. [2024-11-13 14:09:51,791 INFO L78 Accepts]: Start accepts. Automaton has 4782 states and 6925 transitions. Word has length 104 [2024-11-13 14:09:51,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:09:51,791 INFO L471 AbstractCegarLoop]: Abstraction has 4782 states and 6925 transitions. [2024-11-13 14:09:51,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 7.3478260869565215) internal successors, (169), 25 states have internal predecessors, (169), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:09:51,792 INFO L276 IsEmpty]: Start isEmpty. Operand 4782 states and 6925 transitions. [2024-11-13 14:09:51,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-13 14:09:51,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:09:51,793 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:09:51,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 14:09:51,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:51,993 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:09:51,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:09:51,994 INFO L85 PathProgramCache]: Analyzing trace with hash 942245594, now seen corresponding path program 1 times [2024-11-13 14:09:51,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:09:51,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114502337] [2024-11-13 14:09:51,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:51,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:09:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:53,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:09:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:53,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:09:53,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:09:53,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114502337] [2024-11-13 14:09:53,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114502337] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:09:53,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050103771] [2024-11-13 14:09:53,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:53,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:53,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:09:53,390 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:09:53,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:09:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:53,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 14:09:53,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:09:53,804 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 6 treesize of output 5 [2024-11-13 14:09:54,010 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 14:09:54,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 14:09:54,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2024-11-13 14:09:54,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 14:09:54,054 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 13 treesize of output 9 [2024-11-13 14:09:54,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 14:09:54,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 14:09:54,379 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:09:54,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 14:09:54,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 14:09:54,497 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:09:54,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 14:09:54,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 14:09:54,587 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:09:54,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 14:09:54,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 14:09:54,688 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:09:54,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 14:09:54,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 14:09:54,715 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 31 treesize of output 13 [2024-11-13 14:09:54,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 14:09:54,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:09:54,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:09:54,847 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2290 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem59#1.base| v_ArrVal_2290) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 20))) (forall ((v_ArrVal_2290 (Array Int Int)) (v_ArrVal_2289 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem59#1.base| v_ArrVal_2290) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 24) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem59#1.base| v_ArrVal_2289) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 14:09:54,858 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_2290 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2290) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 20))) (forall ((v_ArrVal_2290 (Array Int Int)) (v_ArrVal_2289 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2290) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2289) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2024-11-13 14:09:54,887 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2290 (Array Int Int)) (v_ArrVal_2289 (Array Int Int)) (v_ArrVal_2288 (Array Int Int)) (v_ArrVal_2287 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_2287))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_2288) .cse0 v_ArrVal_2290) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_2289) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_2290 (Array Int Int)) (v_ArrVal_2288 (Array Int Int)) (v_ArrVal_2287 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_2288) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_2287) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2290) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 20))))) is different from false [2024-11-13 14:09:54,906 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_2290 (Array Int Int)) (v_ArrVal_2288 (Array Int Int)) (v_ArrVal_2287 (Array Int Int))) (<= 0 (+ 20 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2288) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2287) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2290) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_2290 (Array Int Int)) (v_ArrVal_2289 (Array Int Int)) (v_ArrVal_2288 (Array Int Int)) (v_ArrVal_2287 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2287))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2288) .cse2 v_ArrVal_2290) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_2289) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))) is different from false [2024-11-13 14:09:54,940 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2290 (Array Int Int)) (v_ArrVal_2289 (Array Int Int)) (v_ArrVal_2288 (Array Int Int)) (v_ArrVal_2287 (Array Int Int)) (v_ArrVal_2286 (Array Int Int)) (v_ArrVal_2285 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2286))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_2287))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2285) .cse0 v_ArrVal_2288) .cse1 v_ArrVal_2290) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 24) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_2289) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_2290 (Array Int Int)) (v_ArrVal_2288 (Array Int Int)) (v_ArrVal_2287 (Array Int Int)) (v_ArrVal_2286 (Array Int Int)) (v_ArrVal_2285 (Array Int Int))) (<= 0 (+ 20 (select (select (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2286))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2285) .cse5 v_ArrVal_2288) (select (select (store .cse6 .cse5 v_ArrVal_2287) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_2290))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-13 14:09:54,965 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_2290 (Array Int Int)) (v_ArrVal_2288 (Array Int Int)) (v_ArrVal_2287 (Array Int Int)) (v_ArrVal_2286 (Array Int Int)) (v_ArrVal_2285 (Array Int Int))) (<= 0 (+ 20 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2286))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2285) .cse1 v_ArrVal_2288) (select (select (store .cse2 .cse1 v_ArrVal_2287) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2290))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))) (forall ((v_ArrVal_2290 (Array Int Int)) (v_ArrVal_2289 (Array Int Int)) (v_ArrVal_2288 (Array Int Int)) (v_ArrVal_2287 (Array Int Int)) (v_ArrVal_2286 (Array Int Int)) (v_ArrVal_2285 (Array Int Int))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2286))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_2287))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2285) .cse4 v_ArrVal_2288) .cse5 v_ArrVal_2290) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_2289) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))))))))) is different from false [2024-11-13 14:09:55,066 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2290 (Array Int Int)) (v_ArrVal_2288 (Array Int Int)) (v_ArrVal_2287 (Array Int Int)) (v_ArrVal_2286 (Array Int Int)) (v_ArrVal_2296 (Array Int Int)) (v_ArrVal_2285 (Array Int Int)) (v_ArrVal_2295 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_2296))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse2 (store .cse4 .cse0 v_ArrVal_2286))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_2295) .cse0 v_ArrVal_2285) .cse1 v_ArrVal_2288) (select (select (store .cse2 .cse1 v_ArrVal_2287) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2290))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 20))) (forall ((v_ArrVal_2290 (Array Int Int)) (v_ArrVal_2289 (Array Int Int)) (v_ArrVal_2288 (Array Int Int)) (v_ArrVal_2287 (Array Int Int)) (v_ArrVal_2286 (Array Int Int)) (v_ArrVal_2296 (Array Int Int)) (v_ArrVal_2285 (Array Int Int)) (v_ArrVal_2295 (Array Int Int))) (let ((.cse10 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_2296))) (let ((.cse5 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse5 v_ArrVal_2286))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse8 (store .cse9 .cse6 v_ArrVal_2287))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_2295) .cse5 v_ArrVal_2285) .cse6 v_ArrVal_2288) .cse7 v_ArrVal_2290) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse8 .cse7 v_ArrVal_2289) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))))) is different from false [2024-11-13 14:09:55,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050103771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:09:55,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:09:55,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2024-11-13 14:09:55,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087422834] [2024-11-13 14:09:55,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:09:55,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 14:09:55,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:09:55,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 14:09:55,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=618, Unknown=7, NotChecked=392, Total=1122 [2024-11-13 14:09:55,072 INFO L87 Difference]: Start difference. First operand 4782 states and 6925 transitions. Second operand has 25 states, 22 states have (on average 7.681818181818182) internal successors, (169), 24 states have internal predecessors, (169), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:10:11,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:11,667 INFO L93 Difference]: Finished difference Result 4784 states and 6936 transitions. [2024-11-13 14:10:11,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:10:11,668 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 7.681818181818182) internal successors, (169), 24 states have internal predecessors, (169), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 104 [2024-11-13 14:10:11,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:11,673 INFO L225 Difference]: With dead ends: 4784 [2024-11-13 14:10:11,674 INFO L226 Difference]: Without dead ends: 4784 [2024-11-13 14:10:11,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=175, Invalid=1036, Unknown=7, NotChecked=504, Total=1722 [2024-11-13 14:10:11,674 INFO L432 NwaCegarLoop]: 1894 mSDtfsCounter, 2647 mSDsluCounter, 23991 mSDsCounter, 0 mSdLazyCounter, 17861 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2665 SdHoareTripleChecker+Valid, 25885 SdHoareTripleChecker+Invalid, 17888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 17861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:11,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2665 Valid, 25885 Invalid, 17888 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [27 Valid, 17861 Invalid, 0 Unknown, 0 Unchecked, 15.9s Time] [2024-11-13 14:10:11,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4784 states. [2024-11-13 14:10:11,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4784 to 4754. [2024-11-13 14:10:11,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4754 states, 4017 states have (on average 1.7027632561613144) internal successors, (6840), 4726 states have internal predecessors, (6840), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-13 14:10:11,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4754 states to 4754 states and 6894 transitions. [2024-11-13 14:10:11,737 INFO L78 Accepts]: Start accepts. Automaton has 4754 states and 6894 transitions. Word has length 104 [2024-11-13 14:10:11,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:11,737 INFO L471 AbstractCegarLoop]: Abstraction has 4754 states and 6894 transitions. [2024-11-13 14:10:11,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 7.681818181818182) internal successors, (169), 24 states have internal predecessors, (169), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:10:11,737 INFO L276 IsEmpty]: Start isEmpty. Operand 4754 states and 6894 transitions. [2024-11-13 14:10:11,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-13 14:10:11,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:11,738 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:10:11,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 14:10:11,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-13 14:10:11,939 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr98REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:10:11,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:11,939 INFO L85 PathProgramCache]: Analyzing trace with hash 952985828, now seen corresponding path program 1 times [2024-11-13 14:10:11,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:11,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390181701] [2024-11-13 14:10:11,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:11,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:12,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:10:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:12,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:10:12,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:12,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390181701] [2024-11-13 14:10:12,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390181701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:10:12,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:10:12,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-13 14:10:12,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991256716] [2024-11-13 14:10:12,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:10:12,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 14:10:12,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:12,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 14:10:12,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-13 14:10:12,860 INFO L87 Difference]: Start difference. First operand 4754 states and 6894 transitions. Second operand has 15 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 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) [2024-11-13 14:10:17,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:17,491 INFO L93 Difference]: Finished difference Result 4793 states and 6946 transitions. [2024-11-13 14:10:17,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:10:17,491 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 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 107 [2024-11-13 14:10:17,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:17,496 INFO L225 Difference]: With dead ends: 4793 [2024-11-13 14:10:17,496 INFO L226 Difference]: Without dead ends: 4793 [2024-11-13 14:10:17,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2024-11-13 14:10:17,497 INFO L432 NwaCegarLoop]: 1894 mSDtfsCounter, 2689 mSDsluCounter, 11176 mSDsCounter, 0 mSdLazyCounter, 6141 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2707 SdHoareTripleChecker+Valid, 13070 SdHoareTripleChecker+Invalid, 6183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 6141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:17,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2707 Valid, 13070 Invalid, 6183 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 6141 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-13 14:10:17,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2024-11-13 14:10:17,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 4789. [2024-11-13 14:10:17,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4789 states, 4051 states have (on average 1.6976055294988892) internal successors, (6877), 4759 states have internal predecessors, (6877), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-13 14:10:17,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4789 states to 4789 states and 6933 transitions. [2024-11-13 14:10:17,537 INFO L78 Accepts]: Start accepts. Automaton has 4789 states and 6933 transitions. Word has length 107 [2024-11-13 14:10:17,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:17,538 INFO L471 AbstractCegarLoop]: Abstraction has 4789 states and 6933 transitions. [2024-11-13 14:10:17,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 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) [2024-11-13 14:10:17,538 INFO L276 IsEmpty]: Start isEmpty. Operand 4789 states and 6933 transitions. [2024-11-13 14:10:17,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-13 14:10:17,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:17,539 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:10:17,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-13 14:10:17,539 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr99REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:10:17,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:17,539 INFO L85 PathProgramCache]: Analyzing trace with hash 952985829, now seen corresponding path program 1 times [2024-11-13 14:10:17,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:17,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358828503] [2024-11-13 14:10:17,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:17,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:18,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:10:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:10:18,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:18,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358828503] [2024-11-13 14:10:18,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358828503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:10:18,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:10:18,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-13 14:10:18,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47452246] [2024-11-13 14:10:18,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:10:18,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 14:10:18,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:18,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 14:10:18,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-13 14:10:18,734 INFO L87 Difference]: Start difference. First operand 4789 states and 6933 transitions. Second operand has 18 states, 16 states have (on average 6.5625) internal successors, (105), 17 states have internal predecessors, (105), 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) [2024-11-13 14:10:26,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:26,832 INFO L93 Difference]: Finished difference Result 4792 states and 6944 transitions. [2024-11-13 14:10:26,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 14:10:26,832 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 6.5625) internal successors, (105), 17 states have internal predecessors, (105), 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 107 [2024-11-13 14:10:26,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:26,838 INFO L225 Difference]: With dead ends: 4792 [2024-11-13 14:10:26,838 INFO L226 Difference]: Without dead ends: 4792 [2024-11-13 14:10:26,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2024-11-13 14:10:26,841 INFO L432 NwaCegarLoop]: 1889 mSDtfsCounter, 2672 mSDsluCounter, 13456 mSDsCounter, 0 mSdLazyCounter, 9339 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2690 SdHoareTripleChecker+Valid, 15345 SdHoareTripleChecker+Invalid, 9368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 9339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:26,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2690 Valid, 15345 Invalid, 9368 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 9339 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-11-13 14:10:26,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4792 states. [2024-11-13 14:10:26,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4792 to 4789. [2024-11-13 14:10:26,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4789 states, 4051 states have (on average 1.6971118242409282) internal successors, (6875), 4759 states have internal predecessors, (6875), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-13 14:10:26,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4789 states to 4789 states and 6931 transitions. [2024-11-13 14:10:26,895 INFO L78 Accepts]: Start accepts. Automaton has 4789 states and 6931 transitions. Word has length 107 [2024-11-13 14:10:26,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:26,895 INFO L471 AbstractCegarLoop]: Abstraction has 4789 states and 6931 transitions. [2024-11-13 14:10:26,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 6.5625) internal successors, (105), 17 states have internal predecessors, (105), 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) [2024-11-13 14:10:26,896 INFO L276 IsEmpty]: Start isEmpty. Operand 4789 states and 6931 transitions. [2024-11-13 14:10:26,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-13 14:10:26,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:26,896 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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] [2024-11-13 14:10:26,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-13 14:10:26,897 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr98REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:10:26,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:26,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1764405787, now seen corresponding path program 1 times [2024-11-13 14:10:26,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:26,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942567064] [2024-11-13 14:10:26,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:26,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:27,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:10:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:27,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:10:27,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:27,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942567064] [2024-11-13 14:10:27,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942567064] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:10:27,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164169619] [2024-11-13 14:10:27,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:27,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:27,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:10:27,737 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:10:27,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 14:10:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:28,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-13 14:10:28,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:10:28,175 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 6 treesize of output 5 [2024-11-13 14:10:28,402 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-13 14:10:28,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-13 14:10:28,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 14:10:28,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 14:10:28,753 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:10:28,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 14:10:28,884 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:10:28,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 14:10:28,970 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:10:28,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 14:10:29,051 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:10:29,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 14:10:29,131 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:10:29,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 14:10:29,150 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 31 treesize of output 13 [2024-11-13 14:10:29,231 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2024-11-13 14:10:29,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2024-11-13 14:10:29,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:10:29,239 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:10:30,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164169619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:10:30,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:10:30,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 26 [2024-11-13 14:10:30,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154021344] [2024-11-13 14:10:30,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:10:30,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 14:10:30,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:30,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 14:10:30,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1165, Unknown=52, NotChecked=0, Total=1406 [2024-11-13 14:10:30,357 INFO L87 Difference]: Start difference. First operand 4789 states and 6931 transitions. Second operand has 27 states, 24 states have (on average 7.375) internal successors, (177), 26 states have internal predecessors, (177), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:10:41,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:41,600 INFO L93 Difference]: Finished difference Result 4791 states and 6942 transitions. [2024-11-13 14:10:41,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 14:10:41,600 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 7.375) internal successors, (177), 26 states have internal predecessors, (177), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 108 [2024-11-13 14:10:41,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:41,605 INFO L225 Difference]: With dead ends: 4791 [2024-11-13 14:10:41,605 INFO L226 Difference]: Without dead ends: 4791 [2024-11-13 14:10:41,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=221, Invalid=1449, Unknown=52, NotChecked=0, Total=1722 [2024-11-13 14:10:41,605 INFO L432 NwaCegarLoop]: 1887 mSDtfsCounter, 2633 mSDsluCounter, 24213 mSDsCounter, 0 mSdLazyCounter, 12236 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2651 SdHoareTripleChecker+Valid, 26100 SdHoareTripleChecker+Invalid, 12262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 12236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:41,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2651 Valid, 26100 Invalid, 12262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 12236 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2024-11-13 14:10:41,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4791 states. [2024-11-13 14:10:41,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4791 to 4788. [2024-11-13 14:10:41,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4788 states, 4051 states have (on average 1.6966181189829672) internal successors, (6873), 4758 states have internal predecessors, (6873), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-13 14:10:41,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4788 states to 4788 states and 6929 transitions. [2024-11-13 14:10:41,652 INFO L78 Accepts]: Start accepts. Automaton has 4788 states and 6929 transitions. Word has length 108 [2024-11-13 14:10:41,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:41,653 INFO L471 AbstractCegarLoop]: Abstraction has 4788 states and 6929 transitions. [2024-11-13 14:10:41,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 7.375) internal successors, (177), 26 states have internal predecessors, (177), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:10:41,653 INFO L276 IsEmpty]: Start isEmpty. Operand 4788 states and 6929 transitions. [2024-11-13 14:10:41,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-13 14:10:41,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:41,654 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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] [2024-11-13 14:10:41,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 14:10:41,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:41,854 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr99REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:10:41,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:41,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1764405788, now seen corresponding path program 1 times [2024-11-13 14:10:41,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:41,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434679219] [2024-11-13 14:10:41,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:41,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:43,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:10:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:43,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:10:43,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:43,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434679219] [2024-11-13 14:10:43,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434679219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:10:43,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47509681] [2024-11-13 14:10:43,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:43,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:43,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:10:43,276 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:10:43,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 14:10:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:43,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-13 14:10:43,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:10:43,703 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 6 treesize of output 5 [2024-11-13 14:10:43,894 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 [2024-11-13 14:10:43,923 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-13 14:10:43,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-13 14:10:44,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 14:10:44,009 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 13 treesize of output 9 [2024-11-13 14:10:44,180 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 33 treesize of output 15 [2024-11-13 14:10:44,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 14:10:44,449 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:10:44,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-13 14:10:44,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 14:10:44,682 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:10:44,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-13 14:10:44,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 14:10:44,820 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:10:44,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-13 14:10:44,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 14:10:44,949 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:10:44,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-13 14:10:44,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 14:10:45,087 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:10:45,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-13 14:10:45,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 14:10:45,135 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 42 treesize of output 18 [2024-11-13 14:10:45,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 14:10:45,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:10:45,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 14:10:45,246 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-13 14:10:45,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-11-13 14:10:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:10:45,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:10:46,702 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (or (forall ((|v_ULTIMATE.start_main_#t~malloc62#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc62#1.base_7|) 0))) (forall ((v_ArrVal_2869 (Array Int Int)) (v_ArrVal_2868 (Array Int Int)) (v_ArrVal_2874 (Array Int Int)) (v_ArrVal_2873 (Array Int Int)) (v_ArrVal_2872 (Array Int Int)) (v_ArrVal_2871 (Array Int Int)) (v_ArrVal_2870 (Array Int Int))) (< 0 (+ (select (select (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2869))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse2 (store .cse4 .cse0 v_ArrVal_2871))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2868) .cse0 v_ArrVal_2870) .cse1 v_ArrVal_2873) (select (select (store .cse2 .cse1 v_ArrVal_2872) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2874))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 1)))) (forall ((v_ArrVal_2869 (Array Int Int)) (v_ArrVal_2868 (Array Int Int)) (v_ArrVal_2875 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc62#1.base_7| Int) (v_ArrVal_2874 (Array Int Int)) (v_ArrVal_2873 (Array Int Int)) (v_ArrVal_2872 (Array Int Int)) (v_ArrVal_2871 (Array Int Int)) (v_ArrVal_2870 (Array Int Int))) (or (forall ((v_ArrVal_2876 Int)) (let ((.cse10 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2869))) (let ((.cse5 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse5 v_ArrVal_2871))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse8 (store .cse9 .cse6 v_ArrVal_2872))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2868) .cse5 v_ArrVal_2870) .cse6 v_ArrVal_2873) .cse7 v_ArrVal_2874) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc62#1.base_7| v_ArrVal_2876) (select (select (store .cse8 .cse7 v_ArrVal_2875) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc62#1.base_7|) 0)))))) is different from false [2024-11-13 14:11:12,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47509681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:12,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:11:12,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13] total 28 [2024-11-13 14:11:12,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902433626] [2024-11-13 14:11:12,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:11:12,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 14:11:12,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:11:12,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 14:11:12,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1312, Unknown=53, NotChecked=76, Total=1640 [2024-11-13 14:11:12,294 INFO L87 Difference]: Start difference. First operand 4788 states and 6929 transitions. Second operand has 29 states, 26 states have (on average 6.769230769230769) internal successors, (176), 28 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:12:53,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:12:53,393 INFO L93 Difference]: Finished difference Result 4790 states and 6940 transitions. [2024-11-13 14:12:53,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 14:12:53,393 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 6.769230769230769) internal successors, (176), 28 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 108 [2024-11-13 14:12:53,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:12:53,398 INFO L225 Difference]: With dead ends: 4790 [2024-11-13 14:12:53,398 INFO L226 Difference]: Without dead ends: 4790 [2024-11-13 14:12:53,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 28.1s TimeCoverageRelationStatistics Valid=234, Invalid=1609, Unknown=53, NotChecked=84, Total=1980 [2024-11-13 14:12:53,399 INFO L432 NwaCegarLoop]: 1887 mSDtfsCounter, 2628 mSDsluCounter, 26522 mSDsCounter, 0 mSdLazyCounter, 20800 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2646 SdHoareTripleChecker+Valid, 28409 SdHoareTripleChecker+Invalid, 20827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 20800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 99.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:12:53,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2646 Valid, 28409 Invalid, 20827 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [27 Valid, 20800 Invalid, 0 Unknown, 0 Unchecked, 99.7s Time] [2024-11-13 14:12:53,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4790 states. [2024-11-13 14:12:53,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4790 to 4752. [2024-11-13 14:12:53,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4752 states, 4017 states have (on average 1.7017674881752551) internal successors, (6836), 4724 states have internal predecessors, (6836), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-13 14:12:53,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 6890 transitions. [2024-11-13 14:12:53,445 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 6890 transitions. Word has length 108 [2024-11-13 14:12:53,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:12:53,446 INFO L471 AbstractCegarLoop]: Abstraction has 4752 states and 6890 transitions. [2024-11-13 14:12:53,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 6.769230769230769) internal successors, (176), 28 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:12:53,446 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 6890 transitions. [2024-11-13 14:12:53,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-13 14:12:53,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:12:53,447 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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] [2024-11-13 14:12:53,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 14:12:53,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:12:53,647 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr102REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:12:53,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:12:53,648 INFO L85 PathProgramCache]: Analyzing trace with hash 667664565, now seen corresponding path program 1 times [2024-11-13 14:12:53,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:12:53,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917536551] [2024-11-13 14:12:53,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:53,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:12:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:54,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:12:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:12:54,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:12:54,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917536551] [2024-11-13 14:12:54,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917536551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:12:54,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:12:54,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:12:54,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413051520] [2024-11-13 14:12:54,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:12:54,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:12:54,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:12:54,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:12:54,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:12:54,340 INFO L87 Difference]: Start difference. First operand 4752 states and 6890 transitions. Second operand has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-11-13 14:13:09,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:13:09,446 INFO L93 Difference]: Finished difference Result 4757 states and 6906 transitions. [2024-11-13 14:13:09,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:13:09,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 110 [2024-11-13 14:13:09,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:13:09,452 INFO L225 Difference]: With dead ends: 4757 [2024-11-13 14:13:09,452 INFO L226 Difference]: Without dead ends: 4757 [2024-11-13 14:13:09,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:13:09,453 INFO L432 NwaCegarLoop]: 2705 mSDtfsCounter, 27 mSDsluCounter, 10415 mSDsCounter, 0 mSdLazyCounter, 3245 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 13120 SdHoareTripleChecker+Invalid, 3254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:13:09,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 13120 Invalid, 3254 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 3245 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time] [2024-11-13 14:13:09,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2024-11-13 14:13:09,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 4751. [2024-11-13 14:13:09,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4751 states, 4017 states have (on average 1.7012696041822255) internal successors, (6834), 4723 states have internal predecessors, (6834), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-13 14:13:09,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4751 states to 4751 states and 6888 transitions. [2024-11-13 14:13:09,513 INFO L78 Accepts]: Start accepts. Automaton has 4751 states and 6888 transitions. Word has length 110 [2024-11-13 14:13:09,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:13:09,513 INFO L471 AbstractCegarLoop]: Abstraction has 4751 states and 6888 transitions. [2024-11-13 14:13:09,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-11-13 14:13:09,513 INFO L276 IsEmpty]: Start isEmpty. Operand 4751 states and 6888 transitions. [2024-11-13 14:13:09,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-13 14:13:09,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:13:09,514 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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] [2024-11-13 14:13:09,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-13 14:13:09,515 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr103REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:13:09,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:13:09,515 INFO L85 PathProgramCache]: Analyzing trace with hash 667664566, now seen corresponding path program 1 times [2024-11-13 14:13:09,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:13:09,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617066240] [2024-11-13 14:13:09,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:13:09,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:13:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:12,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:13:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:12,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:13:12,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:13:12,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617066240] [2024-11-13 14:13:12,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617066240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:13:12,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:13:12,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 14:13:12,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842207417] [2024-11-13 14:13:12,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:13:12,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 14:13:12,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:13:12,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 14:13:12,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:13:12,816 INFO L87 Difference]: Start difference. First operand 4751 states and 6888 transitions. Second operand has 19 states, 17 states have (on average 6.352941176470588) internal successors, (108), 18 states have internal predecessors, (108), 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) [2024-11-13 14:14:19,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:14:19,942 INFO L93 Difference]: Finished difference Result 4795 states and 6944 transitions. [2024-11-13 14:14:19,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 14:14:19,943 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 6.352941176470588) internal successors, (108), 18 states have internal predecessors, (108), 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 110 [2024-11-13 14:14:19,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:14:19,948 INFO L225 Difference]: With dead ends: 4795 [2024-11-13 14:14:19,948 INFO L226 Difference]: Without dead ends: 4795 [2024-11-13 14:14:19,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2024-11-13 14:14:19,949 INFO L432 NwaCegarLoop]: 1888 mSDtfsCounter, 2687 mSDsluCounter, 19088 mSDsCounter, 0 mSdLazyCounter, 14624 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2705 SdHoareTripleChecker+Valid, 20976 SdHoareTripleChecker+Invalid, 14650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 14624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:14:19,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2705 Valid, 20976 Invalid, 14650 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [26 Valid, 14624 Invalid, 0 Unknown, 0 Unchecked, 65.4s Time] [2024-11-13 14:14:19,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4795 states. [2024-11-13 14:14:20,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4795 to 4792. [2024-11-13 14:14:20,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4792 states, 4057 states have (on average 1.6946019226029085) internal successors, (6875), 4762 states have internal predecessors, (6875), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-13 14:14:20,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4792 states to 4792 states and 6931 transitions. [2024-11-13 14:14:20,027 INFO L78 Accepts]: Start accepts. Automaton has 4792 states and 6931 transitions. Word has length 110 [2024-11-13 14:14:20,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:14:20,028 INFO L471 AbstractCegarLoop]: Abstraction has 4792 states and 6931 transitions. [2024-11-13 14:14:20,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 6.352941176470588) internal successors, (108), 18 states have internal predecessors, (108), 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) [2024-11-13 14:14:20,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4792 states and 6931 transitions. [2024-11-13 14:14:20,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-13 14:14:20,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:14:20,028 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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] [2024-11-13 14:14:20,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-13 14:14:20,029 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr103REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-13 14:14:20,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:14:20,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1603721247, now seen corresponding path program 1 times [2024-11-13 14:14:20,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:14:20,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925974594] [2024-11-13 14:14:20,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:14:20,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:14:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:23,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 14:14:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:23,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:14:23,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:14:23,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925974594] [2024-11-13 14:14:23,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925974594] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:14:23,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429449145] [2024-11-13 14:14:23,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:14:23,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:14:23,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:14:23,535 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:14:23,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8485c406-1504-4409-a1f1-63382b15a4f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 14:14:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:24,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 14:14:24,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:14:24,028 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 6 treesize of output 5 [2024-11-13 14:14:24,726 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 [2024-11-13 14:14:24,835 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-13 14:14:24,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-13 14:14:25,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 14:14:25,076 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 13 treesize of output 9 [2024-11-13 14:14:25,696 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 33 treesize of output 15 [2024-11-13 14:14:25,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 14:14:26,568 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:14:26,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-13 14:14:26,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 14:14:27,255 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:14:27,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-13 14:14:27,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 14:14:27,716 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:14:27,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-13 14:14:27,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 14:14:28,192 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:14:28,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-13 14:14:28,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 14:14:28,665 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:14:28,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-13 14:14:28,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 14:14:29,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:14:29,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-13 14:14:29,251 INFO L349 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2024-11-13 14:14:29,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2024-11-13 14:14:29,629 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:14:29,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 14:14:29,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 14:14:29,939 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 31 treesize of output 13 [2024-11-13 14:14:29,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 14:14:30,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:14:30,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:14:30,585 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_3285 (Array Int Int)) (v_ArrVal_3286 (Array Int Int))) (<= (+ 44 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem61#1.base| v_ArrVal_3285) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem61#1.base| v_ArrVal_3286) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_3285 (Array Int Int))) (<= 0 (+ 40 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem61#1.base| v_ArrVal_3285) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 14:15:57,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429449145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:15:57,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:15:57,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 32 [2024-11-13 14:15:57,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850379921] [2024-11-13 14:15:57,789 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:15:57,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-13 14:15:57,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:15:57,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-13 14:15:57,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1746, Unknown=78, NotChecked=88, Total=2162 [2024-11-13 14:15:57,791 INFO L87 Difference]: Start difference. First operand 4792 states and 6931 transitions. Second operand has 33 states, 30 states have (on average 6.1) internal successors, (183), 32 states have internal predecessors, (183), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)