./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstpncpy-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstpncpy-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1 --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 36c3a12d89778d96e6058a4f11ff4e1483403bd2fab9b14de640491057c7f753 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:34:57,984 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:34:58,041 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 06:34:58,045 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:34:58,045 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:34:58,065 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:34:58,066 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:34:58,066 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:34:58,066 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:34:58,067 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:34:58,067 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:34:58,067 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:34:58,067 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:34:58,067 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:34:58,067 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:34:58,068 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:34:58,068 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:34:58,068 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:34:58,068 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:34:58,068 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:34:58,068 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 06:34:58,068 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 06:34:58,068 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 06:34:58,068 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:34:58,068 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 06:34:58,069 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 06:34:58,069 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:34:58,069 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:34:58,069 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:34:58,069 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:34:58,069 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:34:58,069 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:34:58,069 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:34:58,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:34:58,069 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:34:58,069 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:34:58,070 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:34:58,070 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:34:58,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:34:58,070 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:34:58,070 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:34:58,070 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:34:58,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:34:58,070 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:34:58,070 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:34:58,070 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:34:58,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:34:58,071 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_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G 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 -> 36c3a12d89778d96e6058a4f11ff4e1483403bd2fab9b14de640491057c7f753 [2024-12-02 06:34:58,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:34:58,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:34:58,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:34:58,280 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:34:58,280 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:34:58,281 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/array-memsafety/openbsd_cstpncpy-alloca-1.i [2024-12-02 06:35:00,876 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/data/b76815278/150c2535374b4408aca78f14db9940f3/FLAG0abc2011c [2024-12-02 06:35:01,131 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:35:01,132 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/sv-benchmarks/c/array-memsafety/openbsd_cstpncpy-alloca-1.i [2024-12-02 06:35:01,141 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/data/b76815278/150c2535374b4408aca78f14db9940f3/FLAG0abc2011c [2024-12-02 06:35:01,451 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/data/b76815278/150c2535374b4408aca78f14db9940f3 [2024-12-02 06:35:01,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:35:01,454 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:35:01,456 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:35:01,456 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:35:01,459 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:35:01,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:35:01" (1/1) ... [2024-12-02 06:35:01,460 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d41764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:01, skipping insertion in model container [2024-12-02 06:35:01,460 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:35:01" (1/1) ... [2024-12-02 06:35:01,489 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:35:01,723 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 06:35:01,723 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 06:35:01,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:35:01,737 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:35:01,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:35:01,799 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:35:01,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:01 WrapperNode [2024-12-02 06:35:01,799 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:35:01,800 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:35:01,800 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:35:01,801 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:35:01,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:01" (1/1) ... [2024-12-02 06:35:01,816 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:01" (1/1) ... [2024-12-02 06:35:01,834 INFO L138 Inliner]: procedures = 117, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 87 [2024-12-02 06:35:01,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:35:01,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:35:01,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:35:01,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:35:01,844 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:01" (1/1) ... [2024-12-02 06:35:01,844 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:01" (1/1) ... [2024-12-02 06:35:01,846 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:01" (1/1) ... [2024-12-02 06:35:01,859 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [3, 2]. 60 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 4 writes are split as follows [2, 2]. [2024-12-02 06:35:01,859 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:01" (1/1) ... [2024-12-02 06:35:01,859 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:01" (1/1) ... [2024-12-02 06:35:01,865 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:01" (1/1) ... [2024-12-02 06:35:01,866 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:01" (1/1) ... [2024-12-02 06:35:01,869 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:01" (1/1) ... [2024-12-02 06:35:01,870 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:01" (1/1) ... [2024-12-02 06:35:01,871 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:01" (1/1) ... [2024-12-02 06:35:01,873 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:35:01,874 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:35:01,874 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:35:01,874 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:35:01,875 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:01" (1/1) ... [2024-12-02 06:35:01,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:35:01,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:35:01,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:35:01,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:35:01,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 06:35:01,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 06:35:01,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 06:35:01,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 06:35:01,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 06:35:01,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 06:35:01,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:35:01,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:35:02,018 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:35:02,020 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:35:02,183 INFO L? ?]: Removed 49 outVars from TransFormulas that were not future-live. [2024-12-02 06:35:02,183 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:35:02,191 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:35:02,191 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 06:35:02,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:35:02 BoogieIcfgContainer [2024-12-02 06:35:02,192 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:35:02,194 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:35:02,194 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:35:02,197 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:35:02,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:35:01" (1/3) ... [2024-12-02 06:35:02,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6ec156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:35:02, skipping insertion in model container [2024-12-02 06:35:02,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:01" (2/3) ... [2024-12-02 06:35:02,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6ec156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:35:02, skipping insertion in model container [2024-12-02 06:35:02,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:35:02" (3/3) ... [2024-12-02 06:35:02,199 INFO L128 eAbstractionObserver]: Analyzing ICFG openbsd_cstpncpy-alloca-1.i [2024-12-02 06:35:02,210 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:35:02,211 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG openbsd_cstpncpy-alloca-1.i that has 1 procedures, 39 locations, 1 initial locations, 3 loop locations, and 11 error locations. [2024-12-02 06:35:02,240 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:35:02,249 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;@4f01cacc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:35:02,249 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-12-02 06:35:02,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 38 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:02,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-12-02 06:35:02,256 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:02,256 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:02,256 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:02,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:02,260 INFO L85 PathProgramCache]: Analyzing trace with hash 121325233, now seen corresponding path program 1 times [2024-12-02 06:35:02,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:02,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680603415] [2024-12-02 06:35:02,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:02,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:02,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:02,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:02,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680603415] [2024-12-02 06:35:02,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680603415] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:35:02,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:35:02,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:35:02,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558580284] [2024-12-02 06:35:02,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:02,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:35:02,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:02,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:35:02,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:35:02,482 INFO L87 Difference]: Start difference. First operand has 39 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 38 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2024-12-02 06:35:02,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:02,516 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2024-12-02 06:35:02,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:35:02,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 [2024-12-02 06:35:02,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:02,524 INFO L225 Difference]: With dead ends: 45 [2024-12-02 06:35:02,524 INFO L226 Difference]: Without dead ends: 43 [2024-12-02 06:35:02,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:35:02,528 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 4 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 80 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 [2024-12-02 06:35:02,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 80 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:35:02,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-12-02 06:35:02,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2024-12-02 06:35:02,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 39 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:02,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2024-12-02 06:35:02,562 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 8 [2024-12-02 06:35:02,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:02,562 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2024-12-02 06:35:02,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2024-12-02 06:35:02,563 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2024-12-02 06:35:02,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-12-02 06:35:02,563 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:02,563 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:02,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 06:35:02,564 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:02,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:02,564 INFO L85 PathProgramCache]: Analyzing trace with hash 121327411, now seen corresponding path program 1 times [2024-12-02 06:35:02,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:02,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859524312] [2024-12-02 06:35:02,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:02,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:02,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:02,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:02,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859524312] [2024-12-02 06:35:02,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859524312] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:35:02,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:35:02,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:35:02,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305864819] [2024-12-02 06:35:02,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:02,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:35:02,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:02,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:35:02,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:35:02,815 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2024-12-02 06:35:02,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:02,880 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2024-12-02 06:35:02,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:35:02,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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 [2024-12-02 06:35:02,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:02,881 INFO L225 Difference]: With dead ends: 40 [2024-12-02 06:35:02,881 INFO L226 Difference]: Without dead ends: 40 [2024-12-02 06:35:02,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:35:02,882 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 13 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:02,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 87 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:35:02,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-12-02 06:35:02,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2024-12-02 06:35:02,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:02,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2024-12-02 06:35:02,886 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 8 [2024-12-02 06:35:02,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:02,886 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2024-12-02 06:35:02,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2024-12-02 06:35:02,887 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2024-12-02 06:35:02,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-12-02 06:35:02,887 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:02,887 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:02,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:35:02,887 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:02,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:02,888 INFO L85 PathProgramCache]: Analyzing trace with hash 121327412, now seen corresponding path program 1 times [2024-12-02 06:35:02,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:02,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113468936] [2024-12-02 06:35:02,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:02,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:03,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:03,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:03,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113468936] [2024-12-02 06:35:03,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113468936] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:35:03,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:35:03,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:35:03,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89775967] [2024-12-02 06:35:03,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:03,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:35:03,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:03,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:35:03,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:35:03,017 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2024-12-02 06:35:03,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:03,041 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2024-12-02 06:35:03,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:35:03,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2024-12-02 06:35:03,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:03,042 INFO L225 Difference]: With dead ends: 40 [2024-12-02 06:35:03,042 INFO L226 Difference]: Without dead ends: 40 [2024-12-02 06:35:03,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:35:03,043 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:03,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 73 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:35:03,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-12-02 06:35:03,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-12-02 06:35:03,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 39 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:03,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2024-12-02 06:35:03,047 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 8 [2024-12-02 06:35:03,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:03,047 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2024-12-02 06:35:03,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2024-12-02 06:35:03,048 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2024-12-02 06:35:03,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-12-02 06:35:03,048 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:03,048 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:03,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 06:35:03,048 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:03,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:03,049 INFO L85 PathProgramCache]: Analyzing trace with hash 178583536, now seen corresponding path program 1 times [2024-12-02 06:35:03,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:03,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370419570] [2024-12-02 06:35:03,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:03,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:03,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:03,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:03,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370419570] [2024-12-02 06:35:03,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370419570] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:35:03,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:35:03,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:35:03,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373196174] [2024-12-02 06:35:03,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:03,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:35:03,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:03,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:35:03,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:35:03,184 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2024-12-02 06:35:03,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:03,267 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2024-12-02 06:35:03,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:35:03,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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 [2024-12-02 06:35:03,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:03,268 INFO L225 Difference]: With dead ends: 44 [2024-12-02 06:35:03,268 INFO L226 Difference]: Without dead ends: 44 [2024-12-02 06:35:03,268 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:35:03,269 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 14 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:03,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 102 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:35:03,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-12-02 06:35:03,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2024-12-02 06:35:03,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.5) internal successors, (51), 42 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:03,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2024-12-02 06:35:03,273 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 8 [2024-12-02 06:35:03,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:03,273 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2024-12-02 06:35:03,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2024-12-02 06:35:03,274 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2024-12-02 06:35:03,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-12-02 06:35:03,274 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:03,274 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:03,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 06:35:03,274 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:03,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:03,275 INFO L85 PathProgramCache]: Analyzing trace with hash 178585714, now seen corresponding path program 1 times [2024-12-02 06:35:03,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:03,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734805684] [2024-12-02 06:35:03,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:03,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:03,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:03,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:03,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734805684] [2024-12-02 06:35:03,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734805684] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:35:03,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:35:03,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:35:03,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673573447] [2024-12-02 06:35:03,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:03,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:35:03,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:03,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:35:03,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:35:03,405 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2024-12-02 06:35:03,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:03,440 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2024-12-02 06:35:03,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:35:03,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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 [2024-12-02 06:35:03,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:03,442 INFO L225 Difference]: With dead ends: 46 [2024-12-02 06:35:03,442 INFO L226 Difference]: Without dead ends: 46 [2024-12-02 06:35:03,442 INFO L434 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 [2024-12-02 06:35:03,442 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 15 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:03,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 67 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:35:03,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-12-02 06:35:03,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2024-12-02 06:35:03,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.5) internal successors, (51), 42 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:03,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2024-12-02 06:35:03,446 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 8 [2024-12-02 06:35:03,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:03,446 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2024-12-02 06:35:03,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2024-12-02 06:35:03,447 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2024-12-02 06:35:03,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-12-02 06:35:03,447 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:03,447 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:03,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 06:35:03,448 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:03,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:03,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1305334679, now seen corresponding path program 1 times [2024-12-02 06:35:03,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:03,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754645696] [2024-12-02 06:35:03,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:03,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:03,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:03,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754645696] [2024-12-02 06:35:03,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754645696] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:35:03,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:35:03,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:35:03,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949013633] [2024-12-02 06:35:03,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:03,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:35:03,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:03,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:35:03,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:35:03,521 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:03,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:03,596 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2024-12-02 06:35:03,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:35:03,597 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 12 [2024-12-02 06:35:03,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:03,597 INFO L225 Difference]: With dead ends: 44 [2024-12-02 06:35:03,597 INFO L226 Difference]: Without dead ends: 44 [2024-12-02 06:35:03,597 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:35:03,598 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 24 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:03,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 95 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:35:03,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-12-02 06:35:03,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-12-02 06:35:03,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:03,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2024-12-02 06:35:03,601 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 12 [2024-12-02 06:35:03,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:03,602 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2024-12-02 06:35:03,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:03,602 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2024-12-02 06:35:03,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-12-02 06:35:03,602 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:03,602 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:03,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 06:35:03,603 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:03,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:03,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1305334680, now seen corresponding path program 1 times [2024-12-02 06:35:03,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:03,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10194287] [2024-12-02 06:35:03,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:03,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:03,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:03,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10194287] [2024-12-02 06:35:03,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10194287] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:35:03,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:35:03,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:35:03,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633506584] [2024-12-02 06:35:03,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:03,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 06:35:03,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:03,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 06:35:03,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:35:03,764 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:03,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:03,864 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2024-12-02 06:35:03,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:35:03,865 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 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 12 [2024-12-02 06:35:03,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:03,865 INFO L225 Difference]: With dead ends: 46 [2024-12-02 06:35:03,865 INFO L226 Difference]: Without dead ends: 46 [2024-12-02 06:35:03,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:35:03,866 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 13 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:03,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 168 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:35:03,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-12-02 06:35:03,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2024-12-02 06:35:03,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 43 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:03,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2024-12-02 06:35:03,869 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 12 [2024-12-02 06:35:03,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:03,870 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2024-12-02 06:35:03,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:03,870 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2024-12-02 06:35:03,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-12-02 06:35:03,870 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:03,870 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:03,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 06:35:03,871 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:03,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:03,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1099378263, now seen corresponding path program 1 times [2024-12-02 06:35:03,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:03,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643353240] [2024-12-02 06:35:03,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:03,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:04,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:04,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:04,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643353240] [2024-12-02 06:35:04,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643353240] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:35:04,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360503405] [2024-12-02 06:35:04,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:04,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:04,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:35:04,097 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:35:04,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:35:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:04,153 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 06:35:04,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:35:04,225 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 13 treesize of output 7 [2024-12-02 06:35:04,233 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 [2024-12-02 06:35:04,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:04,429 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:35:04,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:04,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360503405] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:35:04,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:35:04,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2024-12-02 06:35:04,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130086346] [2024-12-02 06:35:04,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:35:04,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 06:35:04,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:04,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 06:35:04,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-12-02 06:35:04,631 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:04,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:04,828 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2024-12-02 06:35:04,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 06:35:04,829 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-12-02 06:35:04,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:04,829 INFO L225 Difference]: With dead ends: 45 [2024-12-02 06:35:04,829 INFO L226 Difference]: Without dead ends: 45 [2024-12-02 06:35:04,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2024-12-02 06:35:04,830 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 15 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:04,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 146 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:35:04,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-12-02 06:35:04,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2024-12-02 06:35:04,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:04,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2024-12-02 06:35:04,834 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 12 [2024-12-02 06:35:04,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:04,834 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2024-12-02 06:35:04,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:04,834 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2024-12-02 06:35:04,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-12-02 06:35:04,835 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:04,836 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:04,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 06:35:05,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-12-02 06:35:05,036 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:05,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:05,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1099376085, now seen corresponding path program 1 times [2024-12-02 06:35:05,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:05,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936666796] [2024-12-02 06:35:05,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:05,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:05,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:05,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:05,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936666796] [2024-12-02 06:35:05,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936666796] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:35:05,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92197094] [2024-12-02 06:35:05,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:05,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:05,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:35:05,277 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:35:05,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 06:35:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:05,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 06:35:05,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:35:05,357 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 7 [2024-12-02 06:35:05,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-12-02 06:35:05,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:05,467 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:35:05,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:05,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92197094] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 06:35:05,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 06:35:05,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 12 [2024-12-02 06:35:05,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873597616] [2024-12-02 06:35:05,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:05,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:35:05,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:05,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:35:05,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-12-02 06:35:05,576 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:05,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:05,654 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2024-12-02 06:35:05,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:35:05,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2024-12-02 06:35:05,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:05,655 INFO L225 Difference]: With dead ends: 40 [2024-12-02 06:35:05,655 INFO L226 Difference]: Without dead ends: 40 [2024-12-02 06:35:05,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-12-02 06:35:05,656 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:05,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 98 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:35:05,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-12-02 06:35:05,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2024-12-02 06:35:05,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 36 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:05,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2024-12-02 06:35:05,660 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 12 [2024-12-02 06:35:05,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:05,660 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2024-12-02 06:35:05,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:05,660 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2024-12-02 06:35:05,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-02 06:35:05,661 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:05,661 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:05,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 06:35:05,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:05,862 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:05,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:05,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1812021943, now seen corresponding path program 1 times [2024-12-02 06:35:05,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:05,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167799212] [2024-12-02 06:35:05,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:05,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:05,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:05,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167799212] [2024-12-02 06:35:05,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167799212] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:35:05,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:35:05,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:35:05,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131217338] [2024-12-02 06:35:05,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:05,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:35:05,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:05,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:35:05,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:35:05,910 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:05,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:05,932 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2024-12-02 06:35:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:35:05,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2024-12-02 06:35:05,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:05,933 INFO L225 Difference]: With dead ends: 55 [2024-12-02 06:35:05,933 INFO L226 Difference]: Without dead ends: 55 [2024-12-02 06:35:05,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:35:05,934 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 11 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:05,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 94 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:35:05,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-12-02 06:35:05,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2024-12-02 06:35:05,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 47 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:05,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2024-12-02 06:35:05,938 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 13 [2024-12-02 06:35:05,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:05,938 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2024-12-02 06:35:05,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:05,939 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2024-12-02 06:35:05,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-02 06:35:05,939 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:05,939 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:05,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 06:35:05,940 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:05,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:05,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1810669403, now seen corresponding path program 1 times [2024-12-02 06:35:05,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:05,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359425485] [2024-12-02 06:35:05,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:05,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:06,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:06,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:06,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359425485] [2024-12-02 06:35:06,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359425485] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:35:06,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:35:06,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:35:06,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960279995] [2024-12-02 06:35:06,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:06,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 06:35:06,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:06,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 06:35:06,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:35:06,139 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:06,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:06,284 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2024-12-02 06:35:06,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:35:06,284 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 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 13 [2024-12-02 06:35:06,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:06,285 INFO L225 Difference]: With dead ends: 65 [2024-12-02 06:35:06,285 INFO L226 Difference]: Without dead ends: 65 [2024-12-02 06:35:06,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-12-02 06:35:06,286 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 45 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:06,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 146 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:35:06,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-12-02 06:35:06,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2024-12-02 06:35:06,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 54 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:06,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2024-12-02 06:35:06,290 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 13 [2024-12-02 06:35:06,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:06,291 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2024-12-02 06:35:06,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:06,291 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2024-12-02 06:35:06,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-02 06:35:06,291 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:06,291 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:06,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 06:35:06,292 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:06,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:06,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1810669404, now seen corresponding path program 1 times [2024-12-02 06:35:06,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:06,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506921542] [2024-12-02 06:35:06,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:06,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:06,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:06,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:06,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506921542] [2024-12-02 06:35:06,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506921542] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:35:06,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:35:06,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:35:06,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384591467] [2024-12-02 06:35:06,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:06,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:35:06,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:06,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:35:06,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:35:06,509 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:06,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:06,575 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2024-12-02 06:35:06,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:35:06,576 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 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 13 [2024-12-02 06:35:06,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:06,577 INFO L225 Difference]: With dead ends: 56 [2024-12-02 06:35:06,577 INFO L226 Difference]: Without dead ends: 56 [2024-12-02 06:35:06,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:35:06,577 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 8 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:06,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 126 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:35:06,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-12-02 06:35:06,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-12-02 06:35:06,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.36) internal successors, (68), 55 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:06,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2024-12-02 06:35:06,581 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 13 [2024-12-02 06:35:06,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:06,581 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2024-12-02 06:35:06,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:06,582 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2024-12-02 06:35:06,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-02 06:35:06,582 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:06,582 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:06,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 06:35:06,582 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:06,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:06,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1418994933, now seen corresponding path program 1 times [2024-12-02 06:35:06,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:06,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390810222] [2024-12-02 06:35:06,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:06,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:06,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:06,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:06,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390810222] [2024-12-02 06:35:06,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390810222] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:35:06,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:35:06,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:35:06,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822825454] [2024-12-02 06:35:06,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:06,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:35:06,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:06,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:35:06,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:35:06,659 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:06,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:06,682 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2024-12-02 06:35:06,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:35:06,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2024-12-02 06:35:06,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:06,683 INFO L225 Difference]: With dead ends: 62 [2024-12-02 06:35:06,683 INFO L226 Difference]: Without dead ends: 62 [2024-12-02 06:35:06,683 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:35:06,684 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:06,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 101 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:35:06,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-12-02 06:35:06,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2024-12-02 06:35:06,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.34) internal successors, (67), 55 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:06,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2024-12-02 06:35:06,688 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 13 [2024-12-02 06:35:06,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:06,688 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2024-12-02 06:35:06,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:06,688 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2024-12-02 06:35:06,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-02 06:35:06,689 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:06,689 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:06,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 06:35:06,689 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:06,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:06,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1417642393, now seen corresponding path program 1 times [2024-12-02 06:35:06,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:06,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138213413] [2024-12-02 06:35:06,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:06,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:06,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:06,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:06,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138213413] [2024-12-02 06:35:06,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138213413] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:35:06,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:35:06,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:35:06,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869086265] [2024-12-02 06:35:06,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:06,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:35:06,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:06,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:35:06,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:35:06,810 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:06,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:06,885 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2024-12-02 06:35:06,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:35:06,885 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 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 13 [2024-12-02 06:35:06,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:06,886 INFO L225 Difference]: With dead ends: 55 [2024-12-02 06:35:06,886 INFO L226 Difference]: Without dead ends: 55 [2024-12-02 06:35:06,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:35:06,887 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 37 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:06,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 83 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:35:06,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-12-02 06:35:06,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2024-12-02 06:35:06,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 49 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:06,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2024-12-02 06:35:06,889 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 13 [2024-12-02 06:35:06,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:06,890 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2024-12-02 06:35:06,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:06,890 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2024-12-02 06:35:06,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-02 06:35:06,890 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:06,890 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:06,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 06:35:06,890 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:06,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:06,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1417642394, now seen corresponding path program 1 times [2024-12-02 06:35:06,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:06,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119006299] [2024-12-02 06:35:06,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:06,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:07,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:07,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:07,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119006299] [2024-12-02 06:35:07,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119006299] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:35:07,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:35:07,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:35:07,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056452122] [2024-12-02 06:35:07,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:07,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 06:35:07,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:07,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 06:35:07,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:35:07,064 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:07,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:07,125 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2024-12-02 06:35:07,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 06:35:07,126 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 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 13 [2024-12-02 06:35:07,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:07,126 INFO L225 Difference]: With dead ends: 51 [2024-12-02 06:35:07,126 INFO L226 Difference]: Without dead ends: 51 [2024-12-02 06:35:07,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:35:07,127 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 9 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:07,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 120 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:35:07,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-12-02 06:35:07,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 37. [2024-12-02 06:35:07,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.34375) internal successors, (43), 36 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:07,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-12-02 06:35:07,130 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 13 [2024-12-02 06:35:07,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:07,130 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-12-02 06:35:07,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:07,130 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-12-02 06:35:07,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-12-02 06:35:07,130 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:07,130 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:07,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 06:35:07,131 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:07,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:07,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1536900128, now seen corresponding path program 1 times [2024-12-02 06:35:07,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:07,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219869587] [2024-12-02 06:35:07,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:07,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:07,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:07,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219869587] [2024-12-02 06:35:07,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219869587] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:35:07,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:35:07,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:35:07,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478667356] [2024-12-02 06:35:07,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:07,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:35:07,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:07,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:35:07,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:35:07,236 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:07,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:07,276 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2024-12-02 06:35:07,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:35:07,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2024-12-02 06:35:07,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:07,277 INFO L225 Difference]: With dead ends: 54 [2024-12-02 06:35:07,277 INFO L226 Difference]: Without dead ends: 54 [2024-12-02 06:35:07,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:35:07,278 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 5 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:07,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 114 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:35:07,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-12-02 06:35:07,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2024-12-02 06:35:07,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 52 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:07,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2024-12-02 06:35:07,282 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 17 [2024-12-02 06:35:07,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:07,283 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2024-12-02 06:35:07,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:07,283 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2024-12-02 06:35:07,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-12-02 06:35:07,283 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:07,283 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:07,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 06:35:07,284 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:07,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:07,284 INFO L85 PathProgramCache]: Analyzing trace with hash 525782878, now seen corresponding path program 1 times [2024-12-02 06:35:07,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:07,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158819175] [2024-12-02 06:35:07,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:07,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:07,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:07,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:07,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158819175] [2024-12-02 06:35:07,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158819175] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:35:07,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:35:07,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 06:35:07,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49479010] [2024-12-02 06:35:07,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:07,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 06:35:07,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:07,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 06:35:07,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:35:07,526 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:07,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:07,603 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2024-12-02 06:35:07,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:35:07,603 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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 17 [2024-12-02 06:35:07,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:07,604 INFO L225 Difference]: With dead ends: 69 [2024-12-02 06:35:07,605 INFO L226 Difference]: Without dead ends: 69 [2024-12-02 06:35:07,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:35:07,605 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:07,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 194 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:35:07,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-12-02 06:35:07,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 59. [2024-12-02 06:35:07,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 58 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:07,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2024-12-02 06:35:07,608 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 17 [2024-12-02 06:35:07,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:07,609 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2024-12-02 06:35:07,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:07,609 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2024-12-02 06:35:07,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-12-02 06:35:07,609 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:07,610 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:07,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 06:35:07,610 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:07,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:07,610 INFO L85 PathProgramCache]: Analyzing trace with hash -754080800, now seen corresponding path program 1 times [2024-12-02 06:35:07,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:07,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147626582] [2024-12-02 06:35:07,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:07,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:07,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:07,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147626582] [2024-12-02 06:35:07,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147626582] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:35:07,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:35:07,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 06:35:07,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44145148] [2024-12-02 06:35:07,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:07,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 06:35:07,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:07,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 06:35:07,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-12-02 06:35:07,815 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:07,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:07,893 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2024-12-02 06:35:07,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 06:35:07,893 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 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 17 [2024-12-02 06:35:07,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:07,894 INFO L225 Difference]: With dead ends: 83 [2024-12-02 06:35:07,894 INFO L226 Difference]: Without dead ends: 83 [2024-12-02 06:35:07,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-12-02 06:35:07,894 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:07,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 156 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:35:07,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-12-02 06:35:07,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 61. [2024-12-02 06:35:07,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 60 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:07,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2024-12-02 06:35:07,897 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 17 [2024-12-02 06:35:07,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:07,898 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2024-12-02 06:35:07,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:07,898 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2024-12-02 06:35:07,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-12-02 06:35:07,898 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:07,899 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:07,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 06:35:07,899 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:07,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:07,899 INFO L85 PathProgramCache]: Analyzing trace with hash 381196544, now seen corresponding path program 1 times [2024-12-02 06:35:07,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:07,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685814721] [2024-12-02 06:35:07,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:07,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:07,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:07,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:07,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685814721] [2024-12-02 06:35:07,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685814721] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:35:07,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:35:07,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:35:07,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923026356] [2024-12-02 06:35:07,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:07,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:35:07,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:07,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:35:07,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:35:07,955 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:08,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:08,008 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2024-12-02 06:35:08,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:35:08,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2024-12-02 06:35:08,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:08,010 INFO L225 Difference]: With dead ends: 60 [2024-12-02 06:35:08,010 INFO L226 Difference]: Without dead ends: 60 [2024-12-02 06:35:08,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:35:08,010 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:08,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 80 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:35:08,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-12-02 06:35:08,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-12-02 06:35:08,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 56 states have (on average 1.25) internal successors, (70), 59 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) [2024-12-02 06:35:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2024-12-02 06:35:08,013 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 18 [2024-12-02 06:35:08,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:08,013 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2024-12-02 06:35:08,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:08,013 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2024-12-02 06:35:08,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-12-02 06:35:08,014 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:08,014 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:08,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 06:35:08,014 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:08,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:08,015 INFO L85 PathProgramCache]: Analyzing trace with hash 381196545, now seen corresponding path program 1 times [2024-12-02 06:35:08,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:08,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777169285] [2024-12-02 06:35:08,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:08,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:08,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:08,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:08,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777169285] [2024-12-02 06:35:08,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777169285] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:35:08,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:35:08,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:35:08,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395728640] [2024-12-02 06:35:08,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:08,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:35:08,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:08,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:35:08,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:35:08,103 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:08,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:08,129 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2024-12-02 06:35:08,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:35:08,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2024-12-02 06:35:08,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:08,130 INFO L225 Difference]: With dead ends: 72 [2024-12-02 06:35:08,130 INFO L226 Difference]: Without dead ends: 72 [2024-12-02 06:35:08,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:35:08,130 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:08,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 110 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:35:08,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-12-02 06:35:08,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-12-02 06:35:08,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 68 states have (on average 1.2058823529411764) internal successors, (82), 71 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:08,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2024-12-02 06:35:08,134 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 18 [2024-12-02 06:35:08,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:08,134 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2024-12-02 06:35:08,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:08,135 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2024-12-02 06:35:08,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-12-02 06:35:08,135 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:08,135 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:08,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 06:35:08,136 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:08,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:08,136 INFO L85 PathProgramCache]: Analyzing trace with hash -898667133, now seen corresponding path program 1 times [2024-12-02 06:35:08,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:08,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312083956] [2024-12-02 06:35:08,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:08,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:08,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:08,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312083956] [2024-12-02 06:35:08,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312083956] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:35:08,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:35:08,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 06:35:08,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911561715] [2024-12-02 06:35:08,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:08,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 06:35:08,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:08,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 06:35:08,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 06:35:08,538 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:08,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:08,676 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2024-12-02 06:35:08,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 06:35:08,676 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 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 18 [2024-12-02 06:35:08,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:08,677 INFO L225 Difference]: With dead ends: 77 [2024-12-02 06:35:08,677 INFO L226 Difference]: Without dead ends: 77 [2024-12-02 06:35:08,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 06:35:08,678 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:08,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 137 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:35:08,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-12-02 06:35:08,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-12-02 06:35:08,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 76 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:08,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2024-12-02 06:35:08,681 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 18 [2024-12-02 06:35:08,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:08,681 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2024-12-02 06:35:08,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:08,681 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2024-12-02 06:35:08,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-02 06:35:08,682 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:08,682 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:08,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 06:35:08,682 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:08,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:08,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1260063942, now seen corresponding path program 1 times [2024-12-02 06:35:08,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:08,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913182035] [2024-12-02 06:35:08,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:08,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:08,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:08,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:08,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913182035] [2024-12-02 06:35:08,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913182035] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:35:08,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:35:08,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:35:08,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720027623] [2024-12-02 06:35:08,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:35:08,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:35:08,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:08,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:35:08,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:35:08,778 INFO L87 Difference]: Start difference. First operand 77 states and 89 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) [2024-12-02 06:35:08,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:08,795 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2024-12-02 06:35:08,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:35:08,796 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 [2024-12-02 06:35:08,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:08,797 INFO L225 Difference]: With dead ends: 76 [2024-12-02 06:35:08,797 INFO L226 Difference]: Without dead ends: 45 [2024-12-02 06:35:08,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:35:08,798 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:08,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 52 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:35:08,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-12-02 06:35:08,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-12-02 06:35:08,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 44 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:08,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2024-12-02 06:35:08,801 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 20 [2024-12-02 06:35:08,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:08,801 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2024-12-02 06:35:08,801 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) [2024-12-02 06:35:08,801 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2024-12-02 06:35:08,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-02 06:35:08,801 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:08,801 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:08,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 06:35:08,802 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:08,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:08,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1274600263, now seen corresponding path program 1 times [2024-12-02 06:35:08,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:08,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293375620] [2024-12-02 06:35:08,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:08,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:08,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:08,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:08,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293375620] [2024-12-02 06:35:08,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293375620] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:35:08,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946030003] [2024-12-02 06:35:08,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:08,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:08,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:35:09,000 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:35:09,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 06:35:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:09,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 06:35:09,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:35:09,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:09,219 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:35:09,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-12-02 06:35:09,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:09,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946030003] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:35:09,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:35:09,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2024-12-02 06:35:09,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703647977] [2024-12-02 06:35:09,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:35:09,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 06:35:09,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:09,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 06:35:09,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2024-12-02 06:35:09,443 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:09,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:09,665 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2024-12-02 06:35:09,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 06:35:09,665 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-12-02 06:35:09,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:09,666 INFO L225 Difference]: With dead ends: 60 [2024-12-02 06:35:09,666 INFO L226 Difference]: Without dead ends: 60 [2024-12-02 06:35:09,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2024-12-02 06:35:09,667 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 13 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:09,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 247 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:35:09,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-12-02 06:35:09,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 48. [2024-12-02 06:35:09,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 47 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:09,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2024-12-02 06:35:09,668 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 21 [2024-12-02 06:35:09,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:09,668 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2024-12-02 06:35:09,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:09,669 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2024-12-02 06:35:09,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-02 06:35:09,669 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:09,669 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:09,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 06:35:09,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:09,870 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:09,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:09,870 INFO L85 PathProgramCache]: Analyzing trace with hash 36018023, now seen corresponding path program 1 times [2024-12-02 06:35:09,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:09,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201051861] [2024-12-02 06:35:09,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:09,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:10,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:10,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:10,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201051861] [2024-12-02 06:35:10,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201051861] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:35:10,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299920526] [2024-12-02 06:35:10,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:10,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:10,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:35:10,335 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:35:10,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 06:35:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:10,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-12-02 06:35:10,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:35:10,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 06:35:10,444 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 13 treesize of output 7 [2024-12-02 06:35:10,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-12-02 06:35:10,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:10,869 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:35:11,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:11,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299920526] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:35:11,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:35:11,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-12-02 06:35:11,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897338757] [2024-12-02 06:35:11,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:35:11,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 06:35:11,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:11,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 06:35:11,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 06:35:11,468 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 34 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:12,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:12,348 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2024-12-02 06:35:12,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 06:35:12,349 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 34 states have internal predecessors, (54), 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 [2024-12-02 06:35:12,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:12,349 INFO L225 Difference]: With dead ends: 56 [2024-12-02 06:35:12,349 INFO L226 Difference]: Without dead ends: 33 [2024-12-02 06:35:12,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=295, Invalid=2155, Unknown=0, NotChecked=0, Total=2450 [2024-12-02 06:35:12,350 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:12,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 187 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 06:35:12,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-12-02 06:35:12,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-12-02 06:35:12,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:12,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-12-02 06:35:12,352 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 22 [2024-12-02 06:35:12,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:12,352 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-12-02 06:35:12,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:12,352 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-12-02 06:35:12,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-02 06:35:12,353 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:12,353 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:12,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 06:35:12,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 06:35:12,553 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:12,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:12,554 INFO L85 PathProgramCache]: Analyzing trace with hash 857902477, now seen corresponding path program 1 times [2024-12-02 06:35:12,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:12,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125811973] [2024-12-02 06:35:12,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:12,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:12,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 06:35:12,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:12,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125811973] [2024-12-02 06:35:12,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125811973] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:35:12,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103816895] [2024-12-02 06:35:12,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:12,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:12,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:35:12,961 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:35:12,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 06:35:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:13,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-12-02 06:35:13,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:35:13,104 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 13 treesize of output 1 [2024-12-02 06:35:13,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 06:35:13,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-12-02 06:35:13,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 06:35:13,410 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:35:13,842 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 06:35:13,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 06:35:13,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103816895] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:35:13,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:35:13,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 29 [2024-12-02 06:35:13,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715523096] [2024-12-02 06:35:13,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:35:13,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 06:35:13,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:13,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 06:35:13,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2024-12-02 06:35:13,847 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 30 states, 29 states have (on average 2.206896551724138) internal successors, (64), 30 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:14,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:14,121 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2024-12-02 06:35:14,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 06:35:14,121 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.206896551724138) internal successors, (64), 30 states have internal predecessors, (64), 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 [2024-12-02 06:35:14,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:14,122 INFO L225 Difference]: With dead ends: 34 [2024-12-02 06:35:14,122 INFO L226 Difference]: Without dead ends: 34 [2024-12-02 06:35:14,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 06:35:14,123 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:14,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 196 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:35:14,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-12-02 06:35:14,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-12-02 06:35:14,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 33 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:14,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2024-12-02 06:35:14,124 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 22 [2024-12-02 06:35:14,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:14,124 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2024-12-02 06:35:14,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.206896551724138) internal successors, (64), 30 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:14,124 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2024-12-02 06:35:14,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-12-02 06:35:14,125 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:14,125 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:14,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 06:35:14,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:14,325 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:14,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:14,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1663260207, now seen corresponding path program 2 times [2024-12-02 06:35:14,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:14,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185670878] [2024-12-02 06:35:14,326 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:35:14,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:14,344 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:35:14,344 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:14,701 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:14,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:14,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185670878] [2024-12-02 06:35:14,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185670878] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:35:14,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389942102] [2024-12-02 06:35:14,701 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:35:14,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:14,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:35:14,703 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:35:14,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 06:35:14,792 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:35:14,792 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:14,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-12-02 06:35:14,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:35:14,864 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 [2024-12-02 06:35:14,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:14,952 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:35:14,968 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 15 treesize of output 13 [2024-12-02 06:35:14,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-12-02 06:35:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:15,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389942102] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:35:15,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:35:15,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 25 [2024-12-02 06:35:15,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528703728] [2024-12-02 06:35:15,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:35:15,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 06:35:15,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:15,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 06:35:15,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2024-12-02 06:35:15,021 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:15,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:15,228 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2024-12-02 06:35:15,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 06:35:15,229 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-12-02 06:35:15,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:15,229 INFO L225 Difference]: With dead ends: 54 [2024-12-02 06:35:15,229 INFO L226 Difference]: Without dead ends: 54 [2024-12-02 06:35:15,229 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 06:35:15,230 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 23 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:15,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 215 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:35:15,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-12-02 06:35:15,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2024-12-02 06:35:15,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 50 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:15,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2024-12-02 06:35:15,232 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 26 [2024-12-02 06:35:15,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:15,232 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2024-12-02 06:35:15,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:15,232 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2024-12-02 06:35:15,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-12-02 06:35:15,232 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:15,232 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:15,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 06:35:15,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:15,433 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:15,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:15,433 INFO L85 PathProgramCache]: Analyzing trace with hash -39526032, now seen corresponding path program 1 times [2024-12-02 06:35:15,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:15,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834981493] [2024-12-02 06:35:15,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:15,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:16,038 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 06:35:16,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:16,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834981493] [2024-12-02 06:35:16,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834981493] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:35:16,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581549140] [2024-12-02 06:35:16,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:16,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:16,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:35:16,041 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:35:16,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 06:35:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:16,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-12-02 06:35:16,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:35:16,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 06:35:16,156 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 13 treesize of output 7 [2024-12-02 06:35:16,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-12-02 06:35:16,629 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 06:35:16,629 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:35:17,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 06:35:17,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581549140] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:35:17,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:35:17,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 37 [2024-12-02 06:35:17,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891663161] [2024-12-02 06:35:17,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:35:17,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-12-02 06:35:17,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:17,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-12-02 06:35:17,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1287, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 06:35:17,219 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 38 states, 37 states have (on average 2.054054054054054) internal successors, (76), 38 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:18,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:18,547 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2024-12-02 06:35:18,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 06:35:18,548 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.054054054054054) internal successors, (76), 38 states have internal predecessors, (76), 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 27 [2024-12-02 06:35:18,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:18,548 INFO L225 Difference]: With dead ends: 67 [2024-12-02 06:35:18,548 INFO L226 Difference]: Without dead ends: 42 [2024-12-02 06:35:18,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=329, Invalid=3453, Unknown=0, NotChecked=0, Total=3782 [2024-12-02 06:35:18,549 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 42 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:18,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 182 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 06:35:18,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-12-02 06:35:18,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2024-12-02 06:35:18,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.096774193548387) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:18,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-12-02 06:35:18,551 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 27 [2024-12-02 06:35:18,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:18,551 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-12-02 06:35:18,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.054054054054054) internal successors, (76), 38 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:18,551 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-12-02 06:35:18,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-12-02 06:35:18,551 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:18,551 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:18,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 06:35:18,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:18,752 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:18,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:18,752 INFO L85 PathProgramCache]: Analyzing trace with hash 220976714, now seen corresponding path program 3 times [2024-12-02 06:35:18,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:18,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505127319] [2024-12-02 06:35:18,752 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 06:35:18,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:18,772 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-12-02 06:35:18,772 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:19,074 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:19,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:19,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505127319] [2024-12-02 06:35:19,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505127319] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:35:19,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847723931] [2024-12-02 06:35:19,075 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 06:35:19,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:19,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:35:19,076 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:35:19,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 06:35:19,215 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-12-02 06:35:19,215 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:19,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-02 06:35:19,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:35:19,340 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:19,340 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:35:19,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-12-02 06:35:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:19,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847723931] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:35:19,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:35:19,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 27 [2024-12-02 06:35:19,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835083618] [2024-12-02 06:35:19,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:35:19,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 06:35:19,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:19,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 06:35:19,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2024-12-02 06:35:19,548 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 28 states, 27 states have (on average 2.740740740740741) internal successors, (74), 28 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:19,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:19,716 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-12-02 06:35:19,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 06:35:19,717 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.740740740740741) internal successors, (74), 28 states have internal predecessors, (74), 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 30 [2024-12-02 06:35:19,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:19,717 INFO L225 Difference]: With dead ends: 37 [2024-12-02 06:35:19,717 INFO L226 Difference]: Without dead ends: 37 [2024-12-02 06:35:19,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2024-12-02 06:35:19,718 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:19,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 130 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:35:19,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-12-02 06:35:19,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-12-02 06:35:19,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:19,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2024-12-02 06:35:19,720 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 30 [2024-12-02 06:35:19,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:19,720 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2024-12-02 06:35:19,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.740740740740741) internal successors, (74), 28 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:19,720 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2024-12-02 06:35:19,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-12-02 06:35:19,720 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:19,720 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:19,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 06:35:19,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:19,921 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:19,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:19,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1739656470, now seen corresponding path program 2 times [2024-12-02 06:35:19,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:19,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659738027] [2024-12-02 06:35:19,922 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:35:19,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:19,937 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:35:19,938 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:20,454 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 06:35:20,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:20,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659738027] [2024-12-02 06:35:20,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659738027] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:35:20,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885763695] [2024-12-02 06:35:20,454 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:35:20,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:20,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:35:20,456 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:35:20,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 06:35:20,546 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:35:20,546 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:20,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-12-02 06:35:20,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:35:20,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 06:35:20,558 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 13 treesize of output 7 [2024-12-02 06:35:20,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-12-02 06:35:21,026 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 06:35:21,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:35:21,655 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 06:35:21,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885763695] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:35:21,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:35:21,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 37 [2024-12-02 06:35:21,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856076651] [2024-12-02 06:35:21,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:35:21,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-12-02 06:35:21,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:21,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-12-02 06:35:21,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1270, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 06:35:21,657 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 38 states, 37 states have (on average 2.054054054054054) internal successors, (76), 38 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:22,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:22,468 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2024-12-02 06:35:22,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 06:35:22,468 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.054054054054054) internal successors, (76), 38 states have internal predecessors, (76), 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 31 [2024-12-02 06:35:22,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:22,469 INFO L225 Difference]: With dead ends: 50 [2024-12-02 06:35:22,469 INFO L226 Difference]: Without dead ends: 50 [2024-12-02 06:35:22,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=293, Invalid=2569, Unknown=0, NotChecked=0, Total=2862 [2024-12-02 06:35:22,470 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 14 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:22,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 134 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:35:22,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-12-02 06:35:22,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2024-12-02 06:35:22,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 46 states have (on average 1.108695652173913) internal successors, (51), 47 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:22,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2024-12-02 06:35:22,472 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 31 [2024-12-02 06:35:22,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:22,472 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2024-12-02 06:35:22,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.054054054054054) internal successors, (76), 38 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:22,472 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2024-12-02 06:35:22,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-12-02 06:35:22,473 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:22,473 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:22,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 06:35:22,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 06:35:22,673 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:22,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:22,673 INFO L85 PathProgramCache]: Analyzing trace with hash 544020654, now seen corresponding path program 4 times [2024-12-02 06:35:22,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:22,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637549813] [2024-12-02 06:35:22,674 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 06:35:22,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:22,699 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 06:35:22,699 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:22,978 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:22,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:22,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637549813] [2024-12-02 06:35:22,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637549813] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:35:22,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33679543] [2024-12-02 06:35:22,979 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 06:35:22,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:22,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:35:22,980 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:35:22,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 06:35:23,069 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 06:35:23,069 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:23,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-12-02 06:35:23,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:35:23,100 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 [2024-12-02 06:35:23,121 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:23,121 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:35:23,139 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 15 treesize of output 13 [2024-12-02 06:35:23,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-12-02 06:35:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:23,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33679543] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:35:23,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:35:23,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 17 [2024-12-02 06:35:23,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587366541] [2024-12-02 06:35:23,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:35:23,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 06:35:23,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:23,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 06:35:23,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-12-02 06:35:23,178 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:23,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:23,275 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2024-12-02 06:35:23,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 06:35:23,275 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-12-02 06:35:23,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:23,276 INFO L225 Difference]: With dead ends: 73 [2024-12-02 06:35:23,276 INFO L226 Difference]: Without dead ends: 55 [2024-12-02 06:35:23,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-12-02 06:35:23,276 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 10 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:23,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 158 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:35:23,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-12-02 06:35:23,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2024-12-02 06:35:23,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 1.1) internal successors, (55), 51 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:23,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2024-12-02 06:35:23,277 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 35 [2024-12-02 06:35:23,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:23,278 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2024-12-02 06:35:23,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:23,278 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2024-12-02 06:35:23,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 06:35:23,278 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:23,278 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:23,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 06:35:23,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:23,478 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:23,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:23,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1356471211, now seen corresponding path program 5 times [2024-12-02 06:35:23,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:23,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263018059] [2024-12-02 06:35:23,479 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 06:35:23,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:23,501 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-12-02 06:35:23,501 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:23,811 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:23,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:23,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263018059] [2024-12-02 06:35:23,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263018059] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:35:23,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776123920] [2024-12-02 06:35:23,811 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 06:35:23,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:23,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:35:23,813 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:35:23,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 06:35:23,914 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-12-02 06:35:23,914 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:23,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-12-02 06:35:23,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:35:23,925 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 13 treesize of output 1 [2024-12-02 06:35:24,084 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:24,084 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:35:24,398 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:24,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776123920] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:35:24,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:35:24,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 33 [2024-12-02 06:35:24,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053335821] [2024-12-02 06:35:24,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:35:24,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 06:35:24,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:24,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 06:35:24,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 06:35:24,400 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 34 states, 33 states have (on average 2.909090909090909) internal successors, (96), 34 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:24,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:24,671 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2024-12-02 06:35:24,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 06:35:24,671 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.909090909090909) internal successors, (96), 34 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-12-02 06:35:24,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:24,671 INFO L225 Difference]: With dead ends: 52 [2024-12-02 06:35:24,671 INFO L226 Difference]: Without dead ends: 52 [2024-12-02 06:35:24,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=175, Invalid=1231, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 06:35:24,672 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:24,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 216 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:35:24,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-12-02 06:35:24,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-12-02 06:35:24,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 1.08) internal successors, (54), 51 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:24,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2024-12-02 06:35:24,674 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 39 [2024-12-02 06:35:24,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:24,674 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2024-12-02 06:35:24,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.909090909090909) internal successors, (96), 34 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:24,674 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2024-12-02 06:35:24,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-12-02 06:35:24,674 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:24,674 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:24,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 06:35:24,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:24,875 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:24,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:24,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1588520573, now seen corresponding path program 6 times [2024-12-02 06:35:24,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:24,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225673164] [2024-12-02 06:35:24,875 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 06:35:24,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:24,910 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-12-02 06:35:24,910 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:25,319 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:25,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:25,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225673164] [2024-12-02 06:35:25,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225673164] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:35:25,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869704187] [2024-12-02 06:35:25,319 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 06:35:25,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:25,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:35:25,321 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:35:25,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 06:35:25,433 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-12-02 06:35:25,433 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:25,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-12-02 06:35:25,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:35:25,525 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 [2024-12-02 06:35:25,598 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:25,598 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:35:25,629 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 15 treesize of output 13 [2024-12-02 06:35:25,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-12-02 06:35:25,699 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:25,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869704187] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:35:25,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:35:25,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 28 [2024-12-02 06:35:25,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099435901] [2024-12-02 06:35:25,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:35:25,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 06:35:25,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:25,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 06:35:25,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2024-12-02 06:35:25,701 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:25,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:25,928 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2024-12-02 06:35:25,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 06:35:25,929 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 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 44 [2024-12-02 06:35:25,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:25,929 INFO L225 Difference]: With dead ends: 82 [2024-12-02 06:35:25,929 INFO L226 Difference]: Without dead ends: 59 [2024-12-02 06:35:25,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=833, Unknown=0, NotChecked=0, Total=930 [2024-12-02 06:35:25,930 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:25,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 314 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:35:25,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-12-02 06:35:25,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2024-12-02 06:35:25,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 55 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:25,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2024-12-02 06:35:25,933 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 44 [2024-12-02 06:35:25,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:25,934 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2024-12-02 06:35:25,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:25,934 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2024-12-02 06:35:25,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 06:35:25,934 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:25,934 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:25,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 06:35:26,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:26,135 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:26,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:26,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1170900548, now seen corresponding path program 7 times [2024-12-02 06:35:26,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:26,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054797450] [2024-12-02 06:35:26,135 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 06:35:26,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:26,575 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:26,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:26,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054797450] [2024-12-02 06:35:26,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054797450] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:35:26,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435167754] [2024-12-02 06:35:26,576 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 06:35:26,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:26,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:35:26,577 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:35:26,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 06:35:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:26,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-12-02 06:35:26,694 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:35:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:26,893 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:35:27,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-12-02 06:35:27,245 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:27,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435167754] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:35:27,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:35:27,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2024-12-02 06:35:27,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276018730] [2024-12-02 06:35:27,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:35:27,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 06:35:27,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:27,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 06:35:27,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1003, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 06:35:27,247 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 34 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:27,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:27,605 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2024-12-02 06:35:27,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 06:35:27,606 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 34 states have internal predecessors, (97), 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 48 [2024-12-02 06:35:27,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:27,606 INFO L225 Difference]: With dead ends: 56 [2024-12-02 06:35:27,606 INFO L226 Difference]: Without dead ends: 56 [2024-12-02 06:35:27,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=1323, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 06:35:27,607 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:27,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 256 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:35:27,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-12-02 06:35:27,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-12-02 06:35:27,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 55 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:27,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2024-12-02 06:35:27,609 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 48 [2024-12-02 06:35:27,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:27,609 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2024-12-02 06:35:27,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 34 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:27,609 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2024-12-02 06:35:27,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-12-02 06:35:27,610 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:27,610 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:27,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 06:35:27,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-12-02 06:35:27,810 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:27,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:27,811 INFO L85 PathProgramCache]: Analyzing trace with hash 427412604, now seen corresponding path program 8 times [2024-12-02 06:35:27,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:27,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716070049] [2024-12-02 06:35:27,811 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:35:27,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:27,841 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:35:27,841 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:28,360 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 14 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:28,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:28,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716070049] [2024-12-02 06:35:28,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716070049] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:35:28,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628337114] [2024-12-02 06:35:28,361 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:35:28,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:28,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:35:28,363 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:35:28,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 06:35:28,490 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:35:28,490 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:28,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-12-02 06:35:28,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:35:28,612 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 [2024-12-02 06:35:28,689 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 14 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:28,689 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:35:28,722 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 15 treesize of output 13 [2024-12-02 06:35:28,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-12-02 06:35:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 14 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:28,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628337114] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:35:28,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:35:28,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 31 [2024-12-02 06:35:28,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739943753] [2024-12-02 06:35:28,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:35:28,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-12-02 06:35:28,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:28,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-12-02 06:35:28,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=846, Unknown=0, NotChecked=0, Total=930 [2024-12-02 06:35:28,799 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 31 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:29,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:29,082 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2024-12-02 06:35:29,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 06:35:29,082 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 31 states have internal predecessors, (82), 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 53 [2024-12-02 06:35:29,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:29,083 INFO L225 Difference]: With dead ends: 91 [2024-12-02 06:35:29,083 INFO L226 Difference]: Without dead ends: 63 [2024-12-02 06:35:29,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=1081, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 06:35:29,084 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 20 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:29,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 417 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:35:29,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-12-02 06:35:29,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2024-12-02 06:35:29,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 59 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:29,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2024-12-02 06:35:29,085 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 53 [2024-12-02 06:35:29,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:29,085 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2024-12-02 06:35:29,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 31 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:29,085 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2024-12-02 06:35:29,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 06:35:29,086 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:29,086 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:29,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 06:35:29,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-12-02 06:35:29,286 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:29,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:29,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1344562077, now seen corresponding path program 9 times [2024-12-02 06:35:29,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:29,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201577007] [2024-12-02 06:35:29,287 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 06:35:29,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:29,317 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-12-02 06:35:29,317 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:29,849 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:29,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:29,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201577007] [2024-12-02 06:35:29,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201577007] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:35:29,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350706572] [2024-12-02 06:35:29,850 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 06:35:29,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:29,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:35:29,851 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:35:29,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 06:35:30,036 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-12-02 06:35:30,036 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:30,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-12-02 06:35:30,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:35:30,246 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:30,246 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:35:30,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-12-02 06:35:30,646 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:30,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350706572] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:35:30,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:35:30,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 39 [2024-12-02 06:35:30,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369425396] [2024-12-02 06:35:30,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:35:30,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-12-02 06:35:30,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:30,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-12-02 06:35:30,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1380, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 06:35:30,648 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 40 states, 39 states have (on average 3.051282051282051) internal successors, (119), 40 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:31,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:31,011 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2024-12-02 06:35:31,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 06:35:31,011 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 3.051282051282051) internal successors, (119), 40 states have internal predecessors, (119), 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 57 [2024-12-02 06:35:31,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:31,012 INFO L225 Difference]: With dead ends: 64 [2024-12-02 06:35:31,012 INFO L226 Difference]: Without dead ends: 64 [2024-12-02 06:35:31,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 87 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=324, Invalid=2126, Unknown=0, NotChecked=0, Total=2450 [2024-12-02 06:35:31,013 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:31,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 176 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:35:31,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-12-02 06:35:31,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-12-02 06:35:31,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 63 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:31,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2024-12-02 06:35:31,014 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 57 [2024-12-02 06:35:31,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:31,014 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2024-12-02 06:35:31,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 3.051282051282051) internal successors, (119), 40 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:31,015 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2024-12-02 06:35:31,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 06:35:31,015 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:31,015 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:31,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 06:35:31,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-12-02 06:35:31,216 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:31,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:31,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1268248561, now seen corresponding path program 3 times [2024-12-02 06:35:31,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:31,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280230861] [2024-12-02 06:35:31,216 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 06:35:31,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:31,241 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-12-02 06:35:31,242 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 35 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-12-02 06:35:31,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:31,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280230861] [2024-12-02 06:35:31,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280230861] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:35:31,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330300434] [2024-12-02 06:35:31,762 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 06:35:31,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:31,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:35:31,763 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:35:31,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 06:35:31,940 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-12-02 06:35:31,940 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:31,943 INFO L256 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-12-02 06:35:31,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:35:31,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 06:35:31,984 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 13 treesize of output 7 [2024-12-02 06:35:31,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-12-02 06:35:32,869 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-12-02 06:35:32,869 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:35:33,829 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 06:35:33,831 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-12-02 06:35:33,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330300434] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:35:33,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:35:33,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 18] total 49 [2024-12-02 06:35:33,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173012713] [2024-12-02 06:35:33,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:35:33,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-12-02 06:35:33,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:33,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-12-02 06:35:33,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=2191, Unknown=0, NotChecked=0, Total=2450 [2024-12-02 06:35:33,832 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 50 states, 49 states have (on average 2.2857142857142856) internal successors, (112), 50 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:35,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:35,044 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2024-12-02 06:35:35,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-12-02 06:35:35,044 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.2857142857142856) internal successors, (112), 50 states have internal predecessors, (112), 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 58 [2024-12-02 06:35:35,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:35,045 INFO L225 Difference]: With dead ends: 64 [2024-12-02 06:35:35,045 INFO L226 Difference]: Without dead ends: 64 [2024-12-02 06:35:35,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1330 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=594, Invalid=4518, Unknown=0, NotChecked=0, Total=5112 [2024-12-02 06:35:35,046 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 17 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:35,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 174 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 06:35:35,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-12-02 06:35:35,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2024-12-02 06:35:35,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:35,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2024-12-02 06:35:35,047 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 58 [2024-12-02 06:35:35,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:35,047 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2024-12-02 06:35:35,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.2857142857142856) internal successors, (112), 50 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:35,047 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2024-12-02 06:35:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 06:35:35,048 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:35,048 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:35,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 06:35:35,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-12-02 06:35:35,248 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:35,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:35,248 INFO L85 PathProgramCache]: Analyzing trace with hash -581813707, now seen corresponding path program 10 times [2024-12-02 06:35:35,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:35,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072955634] [2024-12-02 06:35:35,249 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 06:35:35,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:35,272 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 06:35:35,272 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:35,804 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 17 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:35,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:35,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072955634] [2024-12-02 06:35:35,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072955634] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:35:35,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796589653] [2024-12-02 06:35:35,804 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 06:35:35,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:35,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:35:35,806 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:35:35,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 06:35:36,059 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 06:35:36,059 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:36,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-12-02 06:35:36,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:35:36,206 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 [2024-12-02 06:35:36,297 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 17 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:36,298 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:35:36,341 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 15 treesize of output 13 [2024-12-02 06:35:36,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-12-02 06:35:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 17 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:36,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796589653] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:35:36,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:35:36,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 34 [2024-12-02 06:35:36,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954854768] [2024-12-02 06:35:36,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:35:36,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 06:35:36,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:36,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 06:35:36,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1034, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 06:35:36,425 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 34 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:36,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:36,891 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2024-12-02 06:35:36,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-12-02 06:35:36,891 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 34 states have internal predecessors, (95), 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 62 [2024-12-02 06:35:36,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:36,892 INFO L225 Difference]: With dead ends: 103 [2024-12-02 06:35:36,892 INFO L226 Difference]: Without dead ends: 70 [2024-12-02 06:35:36,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=1592, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 06:35:36,893 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:36,893 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 642 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 06:35:36,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-12-02 06:35:36,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2024-12-02 06:35:36,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:36,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2024-12-02 06:35:36,895 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 62 [2024-12-02 06:35:36,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:36,896 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2024-12-02 06:35:36,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 34 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:36,896 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2024-12-02 06:35:36,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-02 06:35:36,896 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:36,896 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:36,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 06:35:37,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-12-02 06:35:37,097 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:37,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:37,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1261543890, now seen corresponding path program 11 times [2024-12-02 06:35:37,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:37,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703447619] [2024-12-02 06:35:37,097 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 06:35:37,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:37,137 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-12-02 06:35:37,137 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:37,633 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 48 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:37,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:37,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703447619] [2024-12-02 06:35:37,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703447619] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:35:37,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347936614] [2024-12-02 06:35:37,633 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 06:35:37,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:37,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:35:37,635 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:35:37,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 06:35:37,958 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-12-02 06:35:37,958 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:37,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-12-02 06:35:37,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:35:37,968 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 [2024-12-02 06:35:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 28 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:38,310 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:35:39,039 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 32 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:39,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347936614] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:35:39,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:35:39,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 50 [2024-12-02 06:35:39,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257421813] [2024-12-02 06:35:39,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:35:39,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-12-02 06:35:39,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:39,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-12-02 06:35:39,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=2277, Unknown=0, NotChecked=0, Total=2550 [2024-12-02 06:35:39,041 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 51 states, 50 states have (on average 3.24) internal successors, (162), 51 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:39,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:39,656 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2024-12-02 06:35:39,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-12-02 06:35:39,656 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 3.24) internal successors, (162), 51 states have internal predecessors, (162), 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 66 [2024-12-02 06:35:39,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:39,657 INFO L225 Difference]: With dead ends: 72 [2024-12-02 06:35:39,657 INFO L226 Difference]: Without dead ends: 72 [2024-12-02 06:35:39,658 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=360, Invalid=3180, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 06:35:39,658 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:39,658 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 492 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 06:35:39,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-12-02 06:35:39,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-12-02 06:35:39,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:39,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-12-02 06:35:39,660 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 66 [2024-12-02 06:35:39,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:39,660 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-12-02 06:35:39,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 3.24) internal successors, (162), 51 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:35:39,661 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-12-02 06:35:39,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-12-02 06:35:39,661 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:39,661 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:39,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 06:35:39,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-12-02 06:35:39,861 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:35:39,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:39,862 INFO L85 PathProgramCache]: Analyzing trace with hash -782770358, now seen corresponding path program 12 times [2024-12-02 06:35:39,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:39,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234975138] [2024-12-02 06:35:39,862 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 06:35:39,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:39,918 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-12-02 06:35:39,918 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:40,855 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 20 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:40,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:40,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234975138] [2024-12-02 06:35:40,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234975138] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:35:40,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720908889] [2024-12-02 06:35:40,855 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 06:35:40,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:40,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:35:40,857 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:35:40,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 06:35:41,259 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-12-02 06:35:41,259 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:35:41,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-12-02 06:35:41,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:35:41,268 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 13 treesize of output 1 [2024-12-02 06:35:41,420 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 14 treesize of output 10 [2024-12-02 06:35:43,361 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 06:35:43,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 20 treesize of output 17 [2024-12-02 06:35:43,517 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 45 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:43,517 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:35:44,931 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 15 treesize of output 13 [2024-12-02 06:35:44,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-12-02 06:35:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 45 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:35:45,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720908889] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:35:45,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:35:45,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 21] total 64 [2024-12-02 06:35:45,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82558250] [2024-12-02 06:35:45,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:35:45,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-12-02 06:35:45,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:45,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-12-02 06:35:45,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=3721, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 06:35:45,308 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 64 states, 64 states have (on average 3.203125) internal successors, (205), 64 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:36:41,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:36:41,650 INFO L93 Difference]: Finished difference Result 122 states and 123 transitions. [2024-12-02 06:36:41,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-12-02 06:36:41,650 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.203125) internal successors, (205), 64 states have internal predecessors, (205), 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 71 [2024-12-02 06:36:41,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:36:41,650 INFO L225 Difference]: With dead ends: 122 [2024-12-02 06:36:41,650 INFO L226 Difference]: Without dead ends: 84 [2024-12-02 06:36:41,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 59.1s TimeCoverageRelationStatistics Valid=907, Invalid=8404, Unknown=1, NotChecked=0, Total=9312 [2024-12-02 06:36:41,652 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 38 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 06:36:41,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 625 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 06:36:41,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-12-02 06:36:41,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2024-12-02 06:36:41,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.025) internal successors, (82), 80 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:36:41,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2024-12-02 06:36:41,653 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 71 [2024-12-02 06:36:41,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:36:41,653 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2024-12-02 06:36:41,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.203125) internal successors, (205), 64 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:36:41,654 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2024-12-02 06:36:41,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 06:36:41,654 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:36:41,654 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:36:41,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 06:36:41,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-12-02 06:36:41,855 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:36:41,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:36:41,855 INFO L85 PathProgramCache]: Analyzing trace with hash -406066201, now seen corresponding path program 13 times [2024-12-02 06:36:41,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:36:41,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455139188] [2024-12-02 06:36:41,855 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 06:36:41,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:36:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:36:42,596 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 23 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:36:42,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:36:42,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455139188] [2024-12-02 06:36:42,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455139188] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:36:42,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061064602] [2024-12-02 06:36:42,597 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 06:36:42,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:36:42,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:36:42,598 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:36:42,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 06:36:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:36:42,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-12-02 06:36:42,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:36:42,991 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 [2024-12-02 06:36:43,137 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 23 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:36:43,137 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:36:43,190 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 15 treesize of output 13 [2024-12-02 06:36:43,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-12-02 06:36:43,297 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 23 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:36:43,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061064602] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:36:43,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:36:43,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 40 [2024-12-02 06:36:43,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78989909] [2024-12-02 06:36:43,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:36:43,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-12-02 06:36:43,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:36:43,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-12-02 06:36:43,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1455, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 06:36:43,299 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 40 states, 40 states have (on average 3.025) internal successors, (121), 40 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:36:44,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:36:44,032 INFO L93 Difference]: Finished difference Result 131 states and 132 transitions. [2024-12-02 06:36:44,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-12-02 06:36:44,032 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.025) internal successors, (121), 40 states have internal predecessors, (121), 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 80 [2024-12-02 06:36:44,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:36:44,033 INFO L225 Difference]: With dead ends: 131 [2024-12-02 06:36:44,033 INFO L226 Difference]: Without dead ends: 88 [2024-12-02 06:36:44,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=145, Invalid=2017, Unknown=0, NotChecked=0, Total=2162 [2024-12-02 06:36:44,033 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 20 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 1356 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:36:44,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 966 Invalid, 1363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1356 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 06:36:44,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-12-02 06:36:44,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2024-12-02 06:36:44,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 84 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) [2024-12-02 06:36:44,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2024-12-02 06:36:44,035 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 80 [2024-12-02 06:36:44,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:36:44,035 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2024-12-02 06:36:44,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.025) internal successors, (121), 40 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:36:44,035 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2024-12-02 06:36:44,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 06:36:44,036 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:36:44,036 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:36:44,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 06:36:44,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-12-02 06:36:44,236 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:36:44,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:36:44,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1369545824, now seen corresponding path program 14 times [2024-12-02 06:36:44,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:36:44,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877663744] [2024-12-02 06:36:44,237 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:36:44,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:36:44,259 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:36:44,259 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:36:44,929 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 66 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:36:44,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:36:44,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877663744] [2024-12-02 06:36:44,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877663744] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:36:44,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140065870] [2024-12-02 06:36:44,930 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:36:44,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:36:44,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:36:44,931 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:36:44,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 06:36:45,070 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:36:45,071 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:36:45,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-12-02 06:36:45,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:36:45,523 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 91 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:36:45,523 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:36:46,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-12-02 06:36:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 91 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:36:46,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140065870] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:36:46,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:36:46,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 50 [2024-12-02 06:36:46,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787290229] [2024-12-02 06:36:46,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:36:46,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-12-02 06:36:46,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:36:46,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-12-02 06:36:46,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=2295, Unknown=0, NotChecked=0, Total=2550 [2024-12-02 06:36:46,298 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand has 51 states, 50 states have (on average 3.42) internal successors, (171), 51 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:36:47,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:36:47,135 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2024-12-02 06:36:47,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-12-02 06:36:47,135 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 3.42) internal successors, (171), 51 states have internal predecessors, (171), 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 84 [2024-12-02 06:36:47,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:36:47,135 INFO L225 Difference]: With dead ends: 90 [2024-12-02 06:36:47,135 INFO L226 Difference]: Without dead ends: 90 [2024-12-02 06:36:47,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 132 SyntacticMatches, 9 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1212 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=346, Invalid=3194, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 06:36:47,136 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:36:47,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 707 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 06:36:47,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-12-02 06:36:47,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-12-02 06:36:47,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 89 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:36:47,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2024-12-02 06:36:47,139 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 84 [2024-12-02 06:36:47,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:36:47,139 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2024-12-02 06:36:47,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 3.42) internal successors, (171), 51 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:36:47,139 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2024-12-02 06:36:47,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 06:36:47,140 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:36:47,140 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:36:47,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 06:36:47,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:36:47,340 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:36:47,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:36:47,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1668583144, now seen corresponding path program 15 times [2024-12-02 06:36:47,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:36:47,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044456268] [2024-12-02 06:36:47,341 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 06:36:47,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:36:47,413 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-12-02 06:36:47,413 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:36:48,427 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 26 proven. 292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:36:48,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:36:48,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044456268] [2024-12-02 06:36:48,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044456268] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:36:48,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93969034] [2024-12-02 06:36:48,427 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 06:36:48,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:36:48,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:36:48,429 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:36:48,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 06:36:49,065 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-12-02 06:36:49,065 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:36:49,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 155 conjuncts are in the unsatisfiable core [2024-12-02 06:36:49,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:36:49,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 06:36:50,201 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 26 proven. 292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:36:50,201 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:36:50,384 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 15 treesize of output 13 [2024-12-02 06:36:50,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-12-02 06:36:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 26 proven. 292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:36:50,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93969034] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:36:50,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:36:50,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 26, 26] total 66 [2024-12-02 06:36:50,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005845121] [2024-12-02 06:36:50,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:36:50,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-12-02 06:36:50,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:36:50,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-12-02 06:36:50,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=4093, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 06:36:50,825 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand has 66 states, 66 states have (on average 3.227272727272727) internal successors, (213), 66 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:36:52,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:36:52,043 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2024-12-02 06:36:52,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 06:36:52,044 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.227272727272727) internal successors, (213), 66 states have internal predecessors, (213), 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 89 [2024-12-02 06:36:52,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:36:52,044 INFO L225 Difference]: With dead ends: 145 [2024-12-02 06:36:52,044 INFO L226 Difference]: Without dead ends: 97 [2024-12-02 06:36:52,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=254, Invalid=5446, Unknown=0, NotChecked=0, Total=5700 [2024-12-02 06:36:52,045 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 19 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:36:52,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1705 Invalid, 2376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 06:36:52,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-12-02 06:36:52,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 94. [2024-12-02 06:36:52,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.021505376344086) internal successors, (95), 93 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:36:52,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2024-12-02 06:36:52,048 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 89 [2024-12-02 06:36:52,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:36:52,048 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2024-12-02 06:36:52,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.227272727272727) internal successors, (213), 66 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:36:52,048 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2024-12-02 06:36:52,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 06:36:52,049 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:36:52,049 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:36:52,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-02 06:36:52,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-12-02 06:36:52,249 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:36:52,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:36:52,249 INFO L85 PathProgramCache]: Analyzing trace with hash -958293633, now seen corresponding path program 16 times [2024-12-02 06:36:52,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:36:52,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605296950] [2024-12-02 06:36:52,249 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 06:36:52,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:36:52,275 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 06:36:52,275 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:36:53,048 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 120 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:36:53,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:36:53,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605296950] [2024-12-02 06:36:53,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605296950] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:36:53,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781585412] [2024-12-02 06:36:53,049 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 06:36:53,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:36:53,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:36:53,050 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:36:53,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 06:36:53,458 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 06:36:53,458 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:36:53,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-12-02 06:36:53,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:36:53,470 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 [2024-12-02 06:36:53,977 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 120 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:36:53,977 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:36:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 120 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:36:55,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781585412] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:36:55,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:36:55,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 24] total 62 [2024-12-02 06:36:55,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837401618] [2024-12-02 06:36:55,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:36:55,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-12-02 06:36:55,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:36:55,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-12-02 06:36:55,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=481, Invalid=3425, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 06:36:55,276 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand has 63 states, 62 states have (on average 3.6774193548387095) internal successors, (228), 63 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:36:56,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:36:56,325 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2024-12-02 06:36:56,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 06:36:56,325 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 3.6774193548387095) internal successors, (228), 63 states have internal predecessors, (228), 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 93 [2024-12-02 06:36:56,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:36:56,326 INFO L225 Difference]: With dead ends: 99 [2024-12-02 06:36:56,326 INFO L226 Difference]: Without dead ends: 99 [2024-12-02 06:36:56,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=596, Invalid=4660, Unknown=0, NotChecked=0, Total=5256 [2024-12-02 06:36:56,327 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 3 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 06:36:56,327 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 782 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 06:36:56,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-12-02 06:36:56,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-12-02 06:36:56,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 98 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:36:56,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2024-12-02 06:36:56,329 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 93 [2024-12-02 06:36:56,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:36:56,330 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2024-12-02 06:36:56,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 3.6774193548387095) internal successors, (228), 63 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:36:56,330 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2024-12-02 06:36:56,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-02 06:36:56,331 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:36:56,331 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:36:56,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-02 06:36:56,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-12-02 06:36:56,531 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:36:56,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:36:56,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1263144601, now seen corresponding path program 17 times [2024-12-02 06:36:56,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:36:56,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276977202] [2024-12-02 06:36:56,532 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 06:36:56,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:36:56,601 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-12-02 06:36:56,601 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:36:57,480 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 29 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:36:57,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:36:57,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276977202] [2024-12-02 06:36:57,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276977202] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:36:57,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792375157] [2024-12-02 06:36:57,480 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 06:36:57,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:36:57,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:36:57,482 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:36:57,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 06:36:57,924 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-12-02 06:36:57,924 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:36:57,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-12-02 06:36:57,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:36:57,936 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 [2024-12-02 06:36:58,336 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 14 treesize of output 10 [2024-12-02 06:36:59,613 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 06:36:59,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 20 treesize of output 15 [2024-12-02 06:36:59,807 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 120 proven. 278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:36:59,807 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:37:01,223 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 15 treesize of output 13 [2024-12-02 06:37:01,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-12-02 06:37:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 120 proven. 278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:37:02,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792375157] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:37:02,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:37:02,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27, 27] total 81 [2024-12-02 06:37:02,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217205882] [2024-12-02 06:37:02,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:37:02,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-12-02 06:37:02,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:37:02,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-12-02 06:37:02,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=6088, Unknown=0, NotChecked=0, Total=6480 [2024-12-02 06:37:02,767 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand has 81 states, 81 states have (on average 3.5308641975308643) internal successors, (286), 81 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:37:10,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 06:37:16,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:37:16,409 INFO L93 Difference]: Finished difference Result 164 states and 165 transitions. [2024-12-02 06:37:16,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-12-02 06:37:16,409 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 3.5308641975308643) internal successors, (286), 81 states have internal predecessors, (286), 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 98 [2024-12-02 06:37:16,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:37:16,410 INFO L225 Difference]: With dead ends: 164 [2024-12-02 06:37:16,410 INFO L226 Difference]: Without dead ends: 111 [2024-12-02 06:37:16,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2149 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=978, Invalid=14772, Unknown=0, NotChecked=0, Total=15750 [2024-12-02 06:37:16,411 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 24 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 3006 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1410 SdHoareTripleChecker+Invalid, 3009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3006 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:37:16,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1410 Invalid, 3009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3006 Invalid, 3 Unknown, 0 Unchecked, 8.0s Time] [2024-12-02 06:37:16,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-12-02 06:37:16,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 108. [2024-12-02 06:37:16,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 107 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:37:16,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2024-12-02 06:37:16,414 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 98 [2024-12-02 06:37:16,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:37:16,415 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2024-12-02 06:37:16,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 3.5308641975308643) internal successors, (286), 81 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:37:16,415 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2024-12-02 06:37:16,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 06:37:16,416 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:37:16,416 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:37:16,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-12-02 06:37:16,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-12-02 06:37:16,616 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:37:16,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:37:16,617 INFO L85 PathProgramCache]: Analyzing trace with hash -419913242, now seen corresponding path program 18 times [2024-12-02 06:37:16,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:37:16,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139012958] [2024-12-02 06:37:16,617 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 06:37:16,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:37:16,715 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-12-02 06:37:16,715 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:37:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 32 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:37:17,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:37:17,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139012958] [2024-12-02 06:37:17,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139012958] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:37:17,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468013297] [2024-12-02 06:37:17,944 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 06:37:17,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:37:17,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:37:17,945 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:37:17,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-12-02 06:37:19,132 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-12-02 06:37:19,132 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:37:19,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-12-02 06:37:19,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:37:19,592 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 [2024-12-02 06:37:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 32 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:37:19,774 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:37:19,847 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 15 treesize of output 13 [2024-12-02 06:37:19,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-12-02 06:37:19,984 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 32 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:37:19,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468013297] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:37:19,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:37:19,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 30, 30] total 51 [2024-12-02 06:37:19,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739146395] [2024-12-02 06:37:19,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:37:19,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-12-02 06:37:19,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:37:19,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-12-02 06:37:19,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=2418, Unknown=0, NotChecked=0, Total=2550 [2024-12-02 06:37:19,986 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand has 51 states, 51 states have (on average 3.215686274509804) internal successors, (164), 51 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:37:21,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:37:21,328 INFO L93 Difference]: Finished difference Result 173 states and 174 transitions. [2024-12-02 06:37:21,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-12-02 06:37:21,329 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.215686274509804) internal successors, (164), 51 states have internal predecessors, (164), 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 107 [2024-12-02 06:37:21,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:37:21,329 INFO L225 Difference]: With dead ends: 173 [2024-12-02 06:37:21,329 INFO L226 Difference]: Without dead ends: 115 [2024-12-02 06:37:21,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=187, Invalid=3473, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 06:37:21,330 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 29 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1838 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:37:21,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 1838 Invalid, 2537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 06:37:21,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-12-02 06:37:21,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 112. [2024-12-02 06:37:21,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:37:21,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2024-12-02 06:37:21,332 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 107 [2024-12-02 06:37:21,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:37:21,332 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2024-12-02 06:37:21,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.215686274509804) internal successors, (164), 51 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:37:21,332 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2024-12-02 06:37:21,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 06:37:21,333 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:37:21,333 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:37:21,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-12-02 06:37:21,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:37:21,534 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:37:21,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:37:21,534 INFO L85 PathProgramCache]: Analyzing trace with hash -962453875, now seen corresponding path program 19 times [2024-12-02 06:37:21,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:37:21,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089340294] [2024-12-02 06:37:21,534 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 06:37:21,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:37:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:37:22,767 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 153 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:37:22,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:37:22,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089340294] [2024-12-02 06:37:22,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089340294] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:37:22,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634382713] [2024-12-02 06:37:22,768 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 06:37:22,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:37:22,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:37:22,769 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:37:22,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-02 06:37:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:37:22,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-12-02 06:37:22,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:37:23,623 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 190 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:37:23,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:37:24,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-12-02 06:37:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 190 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:37:24,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634382713] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:37:24,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:37:24,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 61 [2024-12-02 06:37:24,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556786943] [2024-12-02 06:37:24,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:37:24,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-12-02 06:37:24,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:37:24,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-12-02 06:37:24,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=3390, Unknown=0, NotChecked=0, Total=3782 [2024-12-02 06:37:24,673 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 62 states, 61 states have (on average 3.6557377049180326) internal successors, (223), 62 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:37:25,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:37:25,919 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2024-12-02 06:37:25,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-12-02 06:37:25,920 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 3.6557377049180326) internal successors, (223), 62 states have internal predecessors, (223), 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 111 [2024-12-02 06:37:25,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:37:25,920 INFO L225 Difference]: With dead ends: 117 [2024-12-02 06:37:25,920 INFO L226 Difference]: Without dead ends: 117 [2024-12-02 06:37:25,920 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 177 SyntacticMatches, 12 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2019 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=530, Invalid=4872, Unknown=0, NotChecked=0, Total=5402 [2024-12-02 06:37:25,921 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 3 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 2048 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:37:25,921 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1002 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2048 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 06:37:25,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-12-02 06:37:25,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-12-02 06:37:25,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.0172413793103448) internal successors, (118), 116 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:37:25,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2024-12-02 06:37:25,922 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 111 [2024-12-02 06:37:25,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:37:25,922 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2024-12-02 06:37:25,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 3.6557377049180326) internal successors, (223), 62 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:37:25,923 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2024-12-02 06:37:25,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 06:37:25,923 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:37:25,923 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:37:25,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-12-02 06:37:26,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-12-02 06:37:26,124 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:37:26,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:37:26,124 INFO L85 PathProgramCache]: Analyzing trace with hash 804815435, now seen corresponding path program 20 times [2024-12-02 06:37:26,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:37:26,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204578988] [2024-12-02 06:37:26,124 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:37:26,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:37:26,184 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:37:26,184 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:37:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 35 proven. 550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:37:27,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:37:27,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204578988] [2024-12-02 06:37:27,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204578988] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:37:27,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797980546] [2024-12-02 06:37:27,453 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:37:27,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:37:27,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:37:27,455 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:37:27,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-12-02 06:37:27,659 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:37:27,659 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:37:27,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-12-02 06:37:27,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:37:28,160 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 [2024-12-02 06:37:28,365 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 35 proven. 550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:37:28,365 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:37:28,459 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 15 treesize of output 13 [2024-12-02 06:37:28,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-12-02 06:37:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 35 proven. 550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:37:28,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797980546] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:37:28,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:37:28,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 52 [2024-12-02 06:37:28,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544670307] [2024-12-02 06:37:28,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:37:28,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-12-02 06:37:28,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:37:28,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-12-02 06:37:28,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=2519, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 06:37:28,603 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand has 52 states, 52 states have (on average 3.326923076923077) internal successors, (173), 52 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:37:29,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:37:29,852 INFO L93 Difference]: Finished difference Result 187 states and 188 transitions. [2024-12-02 06:37:29,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-12-02 06:37:29,853 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.326923076923077) internal successors, (173), 52 states have internal predecessors, (173), 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 116 [2024-12-02 06:37:29,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:37:29,853 INFO L225 Difference]: With dead ends: 187 [2024-12-02 06:37:29,853 INFO L226 Difference]: Without dead ends: 124 [2024-12-02 06:37:29,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=193, Invalid=3713, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 06:37:29,854 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 34 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 2342 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 2353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:37:29,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1726 Invalid, 2353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2342 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 06:37:29,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-12-02 06:37:29,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2024-12-02 06:37:29,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 120 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:37:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2024-12-02 06:37:29,855 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 116 [2024-12-02 06:37:29,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:37:29,856 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2024-12-02 06:37:29,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.326923076923077) internal successors, (173), 52 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:37:29,856 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2024-12-02 06:37:29,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-02 06:37:29,857 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:37:29,857 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:37:29,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-12-02 06:37:30,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-12-02 06:37:30,057 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:37:30,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:37:30,057 INFO L85 PathProgramCache]: Analyzing trace with hash -853323388, now seen corresponding path program 21 times [2024-12-02 06:37:30,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:37:30,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275341278] [2024-12-02 06:37:30,058 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 06:37:30,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:37:30,114 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-12-02 06:37:30,114 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:37:31,446 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 190 proven. 440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:37:31,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:37:31,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275341278] [2024-12-02 06:37:31,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275341278] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:37:31,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300389324] [2024-12-02 06:37:31,446 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 06:37:31,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:37:31,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:37:31,448 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:37:31,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-12-02 06:37:32,625 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-12-02 06:37:32,625 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:37:32,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-12-02 06:37:32,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:37:33,159 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 231 proven. 399 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:37:33,159 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:37:33,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-12-02 06:37:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 231 proven. 399 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:37:34,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300389324] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:37:34,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:37:34,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 31, 31] total 68 [2024-12-02 06:37:34,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489741056] [2024-12-02 06:37:34,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:37:34,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-12-02 06:37:34,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:37:34,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-12-02 06:37:34,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=4070, Unknown=0, NotChecked=0, Total=4692 [2024-12-02 06:37:34,306 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand has 69 states, 68 states have (on average 3.6323529411764706) internal successors, (247), 69 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:37:35,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:37:35,474 INFO L93 Difference]: Finished difference Result 126 states and 127 transitions. [2024-12-02 06:37:35,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-12-02 06:37:35,474 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 3.6323529411764706) internal successors, (247), 69 states have internal predecessors, (247), 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 120 [2024-12-02 06:37:35,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:37:35,475 INFO L225 Difference]: With dead ends: 126 [2024-12-02 06:37:35,475 INFO L226 Difference]: Without dead ends: 126 [2024-12-02 06:37:35,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 192 SyntacticMatches, 13 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3556 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1270, Invalid=7286, Unknown=0, NotChecked=0, Total=8556 [2024-12-02 06:37:35,476 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:37:35,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 351 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 06:37:35,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-12-02 06:37:35,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-12-02 06:37:35,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.016) internal successors, (127), 125 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:37:35,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2024-12-02 06:37:35,479 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 120 [2024-12-02 06:37:35,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:37:35,480 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2024-12-02 06:37:35,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 3.6323529411764706) internal successors, (247), 69 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:37:35,480 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2024-12-02 06:37:35,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 06:37:35,481 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:37:35,481 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:37:35,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-12-02 06:37:35,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:37:35,681 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:37:35,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:37:35,681 INFO L85 PathProgramCache]: Analyzing trace with hash 165908916, now seen corresponding path program 22 times [2024-12-02 06:37:35,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:37:35,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296209581] [2024-12-02 06:37:35,682 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 06:37:35,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:37:35,745 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 06:37:35,745 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:37:37,044 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 38 proven. 654 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:37:37,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:37:37,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296209581] [2024-12-02 06:37:37,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296209581] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:37:37,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100279843] [2024-12-02 06:37:37,044 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 06:37:37,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:37:37,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:37:37,046 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:37:37,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-12-02 06:37:38,000 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 06:37:38,000 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:37:38,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-12-02 06:37:38,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:37:38,526 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 [2024-12-02 06:37:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 38 proven. 654 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:37:38,727 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:37:38,805 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 15 treesize of output 13 [2024-12-02 06:37:38,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-12-02 06:37:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 38 proven. 654 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:37:38,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100279843] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:37:38,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:37:38,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 55 [2024-12-02 06:37:38,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913229283] [2024-12-02 06:37:38,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:37:38,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-12-02 06:37:38,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:37:38,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-12-02 06:37:38,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=2831, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 06:37:38,966 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand has 55 states, 55 states have (on average 3.381818181818182) internal successors, (186), 55 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:37:40,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:37:40,558 INFO L93 Difference]: Finished difference Result 201 states and 202 transitions. [2024-12-02 06:37:40,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-12-02 06:37:40,558 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.381818181818182) internal successors, (186), 55 states have internal predecessors, (186), 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 125 [2024-12-02 06:37:40,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:37:40,559 INFO L225 Difference]: With dead ends: 201 [2024-12-02 06:37:40,559 INFO L226 Difference]: Without dead ends: 133 [2024-12-02 06:37:40,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=208, Invalid=4348, Unknown=0, NotChecked=0, Total=4556 [2024-12-02 06:37:40,560 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 33 mSDsluCounter, 2176 mSDsCounter, 0 mSdLazyCounter, 3010 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2231 SdHoareTripleChecker+Invalid, 3022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:37:40,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 2231 Invalid, 3022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 3010 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 06:37:40,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-12-02 06:37:40,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2024-12-02 06:37:40,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 129 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:37:40,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 131 transitions. [2024-12-02 06:37:40,562 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 131 transitions. Word has length 125 [2024-12-02 06:37:40,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:37:40,562 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 131 transitions. [2024-12-02 06:37:40,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.381818181818182) internal successors, (186), 55 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:37:40,562 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 131 transitions. [2024-12-02 06:37:40,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 06:37:40,563 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:37:40,563 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:37:40,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-12-02 06:37:40,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-12-02 06:37:40,763 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:37:40,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:37:40,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1657524891, now seen corresponding path program 23 times [2024-12-02 06:37:40,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:37:40,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210130804] [2024-12-02 06:37:40,764 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 06:37:40,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:37:40,830 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-12-02 06:37:40,830 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:37:42,165 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 242 proven. 499 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:37:42,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:37:42,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210130804] [2024-12-02 06:37:42,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210130804] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:37:42,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752598223] [2024-12-02 06:37:42,165 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 06:37:42,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:37:42,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:37:42,166 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:37:42,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-12-02 06:37:46,686 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-12-02 06:37:46,686 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:37:46,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 141 conjuncts are in the unsatisfiable core [2024-12-02 06:37:46,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:37:46,705 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 [2024-12-02 06:37:47,063 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 276 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:37:47,063 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:37:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 276 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:37:48,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752598223] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:37:48,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:37:48,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 32, 32] total 67 [2024-12-02 06:37:48,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499775847] [2024-12-02 06:37:48,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:37:48,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-12-02 06:37:48,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:37:48,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-12-02 06:37:48,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=554, Invalid=4002, Unknown=0, NotChecked=0, Total=4556 [2024-12-02 06:37:48,881 INFO L87 Difference]: Start difference. First operand 130 states and 131 transitions. Second operand has 68 states, 67 states have (on average 3.9402985074626864) internal successors, (264), 68 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:37:50,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:37:50,636 INFO L93 Difference]: Finished difference Result 135 states and 136 transitions. [2024-12-02 06:37:50,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-12-02 06:37:50,637 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 3.9402985074626864) internal successors, (264), 68 states have internal predecessors, (264), 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 129 [2024-12-02 06:37:50,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:37:50,637 INFO L225 Difference]: With dead ends: 135 [2024-12-02 06:37:50,637 INFO L226 Difference]: Without dead ends: 135 [2024-12-02 06:37:50,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1443 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=735, Invalid=6071, Unknown=0, NotChecked=0, Total=6806 [2024-12-02 06:37:50,638 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 4 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 2699 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 2699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:37:50,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1291 Invalid, 2699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2699 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 06:37:50,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-12-02 06:37:50,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2024-12-02 06:37:50,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.0149253731343284) internal successors, (136), 134 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:37:50,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2024-12-02 06:37:50,641 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 129 [2024-12-02 06:37:50,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:37:50,641 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2024-12-02 06:37:50,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 3.9402985074626864) internal successors, (264), 68 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:37:50,641 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2024-12-02 06:37:50,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-12-02 06:37:50,642 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:37:50,642 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:37:50,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-12-02 06:37:50,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-12-02 06:37:50,842 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:37:50,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:37:50,843 INFO L85 PathProgramCache]: Analyzing trace with hash 94578429, now seen corresponding path program 24 times [2024-12-02 06:37:50,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:37:50,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942871051] [2024-12-02 06:37:50,843 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 06:37:50,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:37:50,932 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-12-02 06:37:50,932 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:37:52,491 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 41 proven. 767 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:37:52,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:37:52,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942871051] [2024-12-02 06:37:52,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942871051] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:37:52,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904647528] [2024-12-02 06:37:52,492 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 06:37:52,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:37:52,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:37:52,493 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:37:52,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-12-02 06:38:04,330 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-12-02 06:38:04,331 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:38:04,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 156 conjuncts are in the unsatisfiable core [2024-12-02 06:38:04,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:38:05,009 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 [2024-12-02 06:38:05,230 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 41 proven. 767 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:38:05,230 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:38:05,322 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 15 treesize of output 13 [2024-12-02 06:38:05,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-12-02 06:38:05,488 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 41 proven. 767 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:38:05,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904647528] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:38:05,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:38:05,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 36, 36] total 60 [2024-12-02 06:38:05,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844801593] [2024-12-02 06:38:05,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:38:05,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-12-02 06:38:05,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:38:05,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-12-02 06:38:05,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=3387, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 06:38:05,490 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 60 states, 60 states have (on average 3.3833333333333333) internal successors, (203), 60 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:38:07,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:38:07,374 INFO L93 Difference]: Finished difference Result 215 states and 216 transitions. [2024-12-02 06:38:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-12-02 06:38:07,375 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.3833333333333333) internal successors, (203), 60 states have internal predecessors, (203), 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 134 [2024-12-02 06:38:07,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:38:07,375 INFO L225 Difference]: With dead ends: 215 [2024-12-02 06:38:07,376 INFO L226 Difference]: Without dead ends: 142 [2024-12-02 06:38:07,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=223, Invalid=5033, Unknown=0, NotChecked=0, Total=5256 [2024-12-02 06:38:07,376 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 32 mSDsluCounter, 2512 mSDsCounter, 0 mSdLazyCounter, 3453 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 2571 SdHoareTripleChecker+Invalid, 3466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:38:07,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 2571 Invalid, 3466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3453 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 06:38:07,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-12-02 06:38:07,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 139. [2024-12-02 06:38:07,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.0144927536231885) internal successors, (140), 138 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:38:07,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2024-12-02 06:38:07,378 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 134 [2024-12-02 06:38:07,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:38:07,378 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2024-12-02 06:38:07,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.3833333333333333) internal successors, (203), 60 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:38:07,379 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2024-12-02 06:38:07,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-02 06:38:07,379 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:38:07,379 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:38:07,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-12-02 06:38:07,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-12-02 06:38:07,580 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:38:07,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:38:07,580 INFO L85 PathProgramCache]: Analyzing trace with hash -62391818, now seen corresponding path program 25 times [2024-12-02 06:38:07,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:38:07,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995635611] [2024-12-02 06:38:07,580 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 06:38:07,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:38:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:38:09,238 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 276 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:38:09,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:38:09,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995635611] [2024-12-02 06:38:09,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995635611] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:38:09,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735309929] [2024-12-02 06:38:09,238 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 06:38:09,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:38:09,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:38:09,240 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:38:09,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-12-02 06:38:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:38:09,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-12-02 06:38:09,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:38:10,350 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 325 proven. 536 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:38:10,350 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:38:11,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-12-02 06:38:11,877 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 325 proven. 536 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:38:11,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735309929] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:38:11,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:38:11,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 73 [2024-12-02 06:38:11,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756495760] [2024-12-02 06:38:11,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:38:11,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-12-02 06:38:11,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:38:11,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-12-02 06:38:11,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=569, Invalid=4833, Unknown=0, NotChecked=0, Total=5402 [2024-12-02 06:38:11,879 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand has 74 states, 73 states have (on average 3.7945205479452055) internal successors, (277), 74 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:38:13,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:38:13,609 INFO L93 Difference]: Finished difference Result 144 states and 145 transitions. [2024-12-02 06:38:13,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-12-02 06:38:13,609 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 3.7945205479452055) internal successors, (277), 74 states have internal predecessors, (277), 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 138 [2024-12-02 06:38:13,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:38:13,610 INFO L225 Difference]: With dead ends: 144 [2024-12-02 06:38:13,610 INFO L226 Difference]: Without dead ends: 144 [2024-12-02 06:38:13,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 222 SyntacticMatches, 15 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3093 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=764, Invalid=7068, Unknown=0, NotChecked=0, Total=7832 [2024-12-02 06:38:13,610 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 3 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 2799 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 2799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:38:13,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1344 Invalid, 2799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2799 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 06:38:13,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-12-02 06:38:13,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-12-02 06:38:13,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.013986013986014) internal successors, (145), 143 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:38:13,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2024-12-02 06:38:13,613 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 138 [2024-12-02 06:38:13,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:38:13,613 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2024-12-02 06:38:13,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 3.7945205479452055) internal successors, (277), 74 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:38:13,613 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2024-12-02 06:38:13,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 06:38:13,613 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:38:13,613 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:38:13,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-12-02 06:38:13,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-12-02 06:38:13,814 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:38:13,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:38:13,814 INFO L85 PathProgramCache]: Analyzing trace with hash 569401474, now seen corresponding path program 26 times [2024-12-02 06:38:13,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:38:13,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467704870] [2024-12-02 06:38:13,814 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:38:13,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:38:13,889 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:38:13,889 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:38:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 44 proven. 889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:38:15,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:38:15,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467704870] [2024-12-02 06:38:15,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467704870] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:38:15,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327090916] [2024-12-02 06:38:15,510 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:38:15,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:38:15,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:38:15,512 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:38:15,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-12-02 06:38:15,741 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:38:15,741 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:38:15,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 166 conjuncts are in the unsatisfiable core [2024-12-02 06:38:15,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:38:16,437 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 [2024-12-02 06:38:16,675 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 44 proven. 889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:38:16,675 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:38:16,766 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 15 treesize of output 13 [2024-12-02 06:38:16,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-12-02 06:38:16,947 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 44 proven. 889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:38:16,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327090916] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:38:16,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:38:16,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 38] total 61 [2024-12-02 06:38:16,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182378645] [2024-12-02 06:38:16,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:38:16,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-12-02 06:38:16,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:38:16,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-12-02 06:38:16,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=3506, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 06:38:16,948 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 61 states, 61 states have (on average 3.4754098360655736) internal successors, (212), 61 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:38:18,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:38:18,628 INFO L93 Difference]: Finished difference Result 229 states and 230 transitions. [2024-12-02 06:38:18,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-12-02 06:38:18,628 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.4754098360655736) internal successors, (212), 61 states have internal predecessors, (212), 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 143 [2024-12-02 06:38:18,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:38:18,629 INFO L225 Difference]: With dead ends: 229 [2024-12-02 06:38:18,629 INFO L226 Difference]: Without dead ends: 151 [2024-12-02 06:38:18,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=229, Invalid=5321, Unknown=0, NotChecked=0, Total=5550 [2024-12-02 06:38:18,630 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 40 mSDsluCounter, 2310 mSDsCounter, 0 mSdLazyCounter, 3173 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:38:18,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 2373 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3173 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 06:38:18,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-12-02 06:38:18,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 148. [2024-12-02 06:38:18,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 147 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:38:18,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2024-12-02 06:38:18,631 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 143 [2024-12-02 06:38:18,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:38:18,631 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2024-12-02 06:38:18,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.4754098360655736) internal successors, (212), 61 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:38:18,631 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2024-12-02 06:38:18,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 06:38:18,632 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:38:18,632 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:38:18,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-12-02 06:38:18,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:38:18,832 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:38:18,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:38:18,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1040635305, now seen corresponding path program 27 times [2024-12-02 06:38:18,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:38:18,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594693518] [2024-12-02 06:38:18,833 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 06:38:18,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:38:18,926 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-12-02 06:38:18,926 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:38:20,664 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 325 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:38:20,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:38:20,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594693518] [2024-12-02 06:38:20,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594693518] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:38:20,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769916917] [2024-12-02 06:38:20,665 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 06:38:20,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:38:20,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:38:20,667 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:38:20,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-12-02 06:38:31,529 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-12-02 06:38:31,529 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:38:31,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-12-02 06:38:31,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:38:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 378 proven. 612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:38:32,276 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:38:33,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-12-02 06:38:33,846 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 378 proven. 612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:38:33,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769916917] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:38:33,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:38:33,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 37, 37] total 82 [2024-12-02 06:38:33,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427916138] [2024-12-02 06:38:33,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:38:33,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-12-02 06:38:33,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:38:33,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-12-02 06:38:33,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=916, Invalid=5890, Unknown=0, NotChecked=0, Total=6806 [2024-12-02 06:38:33,848 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand has 83 states, 82 states have (on average 3.7195121951219514) internal successors, (305), 83 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:38:35,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:38:35,376 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2024-12-02 06:38:35,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-12-02 06:38:35,377 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 3.7195121951219514) internal successors, (305), 83 states have internal predecessors, (305), 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 147 [2024-12-02 06:38:35,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:38:35,378 INFO L225 Difference]: With dead ends: 153 [2024-12-02 06:38:35,378 INFO L226 Difference]: Without dead ends: 153 [2024-12-02 06:38:35,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 237 SyntacticMatches, 16 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5458 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1879, Invalid=10777, Unknown=0, NotChecked=0, Total=12656 [2024-12-02 06:38:35,378 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:38:35,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 459 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 06:38:35,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-12-02 06:38:35,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2024-12-02 06:38:35,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.013157894736842) internal successors, (154), 152 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:38:35,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2024-12-02 06:38:35,380 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 147 [2024-12-02 06:38:35,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:38:35,380 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2024-12-02 06:38:35,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 3.7195121951219514) internal successors, (305), 83 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:38:35,380 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2024-12-02 06:38:35,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-12-02 06:38:35,381 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:38:35,381 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:38:35,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-12-02 06:38:35,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:38:35,581 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:38:35,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:38:35,582 INFO L85 PathProgramCache]: Analyzing trace with hash 766893231, now seen corresponding path program 28 times [2024-12-02 06:38:35,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:38:35,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259615557] [2024-12-02 06:38:35,582 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 06:38:35,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:38:35,636 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 06:38:35,636 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:38:37,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 47 proven. 1020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:38:37,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:38:37,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259615557] [2024-12-02 06:38:37,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259615557] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:38:37,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520266191] [2024-12-02 06:38:37,434 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 06:38:37,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:38:37,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:38:37,435 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:38:37,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-12-02 06:38:39,273 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 06:38:39,273 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:38:39,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 174 conjuncts are in the unsatisfiable core [2024-12-02 06:38:39,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:38:39,900 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 [2024-12-02 06:38:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 47 proven. 1020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:38:40,120 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:38:40,210 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 15 treesize of output 13 [2024-12-02 06:38:40,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-12-02 06:38:40,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 47 proven. 1020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:38:40,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520266191] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:38:40,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:38:40,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 63 [2024-12-02 06:38:40,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626953736] [2024-12-02 06:38:40,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:38:40,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-12-02 06:38:40,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:38:40,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-12-02 06:38:40,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=3748, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 06:38:40,367 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand has 63 states, 63 states have (on average 3.5555555555555554) internal successors, (224), 63 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:38:42,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:38:42,601 INFO L93 Difference]: Finished difference Result 243 states and 244 transitions. [2024-12-02 06:38:42,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-12-02 06:38:42,601 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.5555555555555554) internal successors, (224), 63 states have internal predecessors, (224), 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 152 [2024-12-02 06:38:42,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:38:42,602 INFO L225 Difference]: With dead ends: 243 [2024-12-02 06:38:42,602 INFO L226 Difference]: Without dead ends: 160 [2024-12-02 06:38:42,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=238, Invalid=5768, Unknown=0, NotChecked=0, Total=6006 [2024-12-02 06:38:42,602 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 39 mSDsluCounter, 3259 mSDsCounter, 0 mSdLazyCounter, 4403 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3326 SdHoareTripleChecker+Invalid, 4418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 06:38:42,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3326 Invalid, 4418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 4403 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 06:38:42,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-12-02 06:38:42,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 157. [2024-12-02 06:38:42,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.0128205128205128) internal successors, (158), 156 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:38:42,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2024-12-02 06:38:42,604 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 152 [2024-12-02 06:38:42,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:38:42,604 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2024-12-02 06:38:42,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.5555555555555554) internal successors, (224), 63 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:38:42,604 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2024-12-02 06:38:42,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 06:38:42,605 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:38:42,605 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:38:42,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-12-02 06:38:42,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:38:42,805 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:38:42,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:38:42,806 INFO L85 PathProgramCache]: Analyzing trace with hash 306398056, now seen corresponding path program 29 times [2024-12-02 06:38:42,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:38:42,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650467865] [2024-12-02 06:38:42,806 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 06:38:42,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:38:42,928 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-12-02 06:38:42,928 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:38:44,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 435 proven. 693 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:38:44,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:38:44,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650467865] [2024-12-02 06:38:44,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650467865] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:38:44,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111693402] [2024-12-02 06:38:44,604 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 06:38:44,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:38:44,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:38:44,605 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:38:44,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-12-02 06:39:15,748 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-12-02 06:39:15,748 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:39:15,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 168 conjuncts are in the unsatisfiable core [2024-12-02 06:39:15,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:39:15,780 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 13 treesize of output 1 [2024-12-02 06:39:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 435 proven. 693 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:39:16,992 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:39:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 435 proven. 693 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:39:19,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111693402] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:39:19,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:39:19,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 38, 38] total 98 [2024-12-02 06:39:19,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590225470] [2024-12-02 06:39:19,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:39:19,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-12-02 06:39:19,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:39:19,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-12-02 06:39:19,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1054, Invalid=8648, Unknown=0, NotChecked=0, Total=9702 [2024-12-02 06:39:19,987 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand has 99 states, 98 states have (on average 3.9183673469387754) internal successors, (384), 99 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:39:22,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:39:22,342 INFO L93 Difference]: Finished difference Result 162 states and 163 transitions. [2024-12-02 06:39:22,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-12-02 06:39:22,342 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 3.9183673469387754) internal successors, (384), 99 states have internal predecessors, (384), 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 156 [2024-12-02 06:39:22,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:39:22,343 INFO L225 Difference]: With dead ends: 162 [2024-12-02 06:39:22,343 INFO L226 Difference]: Without dead ends: 162 [2024-12-02 06:39:22,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3455 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1310, Invalid=12030, Unknown=0, NotChecked=0, Total=13340 [2024-12-02 06:39:22,343 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 6 mSDsluCounter, 1881 mSDsCounter, 0 mSdLazyCounter, 3867 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 3867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 06:39:22,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1936 Invalid, 3867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3867 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 06:39:22,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-12-02 06:39:22,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2024-12-02 06:39:22,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.0124223602484472) internal successors, (163), 161 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:39:22,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 163 transitions. [2024-12-02 06:39:22,345 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 163 transitions. Word has length 156 [2024-12-02 06:39:22,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:39:22,345 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 163 transitions. [2024-12-02 06:39:22,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 3.9183673469387754) internal successors, (384), 99 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:39:22,346 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 163 transitions. [2024-12-02 06:39:22,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 06:39:22,346 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:39:22,346 INFO L218 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:39:22,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-12-02 06:39:22,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-12-02 06:39:22,547 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:39:22,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:39:22,547 INFO L85 PathProgramCache]: Analyzing trace with hash -450679216, now seen corresponding path program 30 times [2024-12-02 06:39:22,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:39:22,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861040582] [2024-12-02 06:39:22,547 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 06:39:22,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:39:22,664 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-12-02 06:39:22,664 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:39:24,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 50 proven. 1160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:39:24,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:39:24,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861040582] [2024-12-02 06:39:24,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861040582] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:39:24,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149654322] [2024-12-02 06:39:24,770 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 06:39:24,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:39:24,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:39:24,772 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:39:24,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-12-02 06:40:02,853 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-12-02 06:40:02,853 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:40:02,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 266 conjuncts are in the unsatisfiable core [2024-12-02 06:40:02,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:40:04,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 06:40:05,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 50 proven. 1160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:40:05,554 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:40:05,852 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 15 treesize of output 13 [2024-12-02 06:40:05,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-12-02 06:40:06,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 50 proven. 1160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:40:07,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149654322] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:40:07,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:40:07,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 42, 42] total 107 [2024-12-02 06:40:07,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889344652] [2024-12-02 06:40:07,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:40:07,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2024-12-02 06:40:07,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:07,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2024-12-02 06:40:07,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=11029, Unknown=0, NotChecked=0, Total=11342 [2024-12-02 06:40:07,002 INFO L87 Difference]: Start difference. First operand 162 states and 163 transitions. Second operand has 107 states, 107 states have (on average 3.6542056074766354) internal successors, (391), 107 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:40:10,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:10,263 INFO L93 Difference]: Finished difference Result 257 states and 258 transitions. [2024-12-02 06:40:10,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-12-02 06:40:10,263 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 3.6542056074766354) internal successors, (391), 107 states have internal predecessors, (391), 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 161 [2024-12-02 06:40:10,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:10,264 INFO L225 Difference]: With dead ends: 257 [2024-12-02 06:40:10,264 INFO L226 Difference]: Without dead ends: 169 [2024-12-02 06:40:10,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3182 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=423, Invalid=15327, Unknown=0, NotChecked=0, Total=15750 [2024-12-02 06:40:10,265 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 38 mSDsluCounter, 4703 mSDsCounter, 0 mSdLazyCounter, 6441 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 4774 SdHoareTripleChecker+Invalid, 6457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 6441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:10,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 4774 Invalid, 6457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 6441 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 06:40:10,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-12-02 06:40:10,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 166. [2024-12-02 06:40:10,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.0121212121212122) internal successors, (167), 165 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:40:10,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2024-12-02 06:40:10,267 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 161 [2024-12-02 06:40:10,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:10,268 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions. [2024-12-02 06:40:10,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 3.6542056074766354) internal successors, (391), 107 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:40:10,268 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions. [2024-12-02 06:40:10,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-12-02 06:40:10,268 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:10,269 INFO L218 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:40:10,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-12-02 06:40:10,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-12-02 06:40:10,469 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:40:10,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:10,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1688516681, now seen corresponding path program 31 times [2024-12-02 06:40:10,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:10,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033998507] [2024-12-02 06:40:10,470 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 06:40:10,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:12,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 435 proven. 840 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:40:12,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:12,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033998507] [2024-12-02 06:40:12,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033998507] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:40:12,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195816708] [2024-12-02 06:40:12,673 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 06:40:12,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:12,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:40:12,674 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:40:12,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-12-02 06:40:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:12,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 171 conjuncts are in the unsatisfiable core [2024-12-02 06:40:12,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:40:14,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 496 proven. 779 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:40:14,018 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:40:15,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-12-02 06:40:15,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 496 proven. 779 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:40:15,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195816708] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:40:15,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:40:15,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 85 [2024-12-02 06:40:15,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974544201] [2024-12-02 06:40:15,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:40:15,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-12-02 06:40:15,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:15,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-12-02 06:40:15,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=6528, Unknown=0, NotChecked=0, Total=7310 [2024-12-02 06:40:15,992 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand has 86 states, 85 states have (on average 3.8941176470588235) internal successors, (331), 86 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:40:18,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:18,344 INFO L93 Difference]: Finished difference Result 171 states and 172 transitions. [2024-12-02 06:40:18,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-12-02 06:40:18,345 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 3.8941176470588235) internal successors, (331), 86 states have internal predecessors, (331), 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 165 [2024-12-02 06:40:18,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:18,346 INFO L225 Difference]: With dead ends: 171 [2024-12-02 06:40:18,346 INFO L226 Difference]: Without dead ends: 171 [2024-12-02 06:40:18,346 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 267 SyntacticMatches, 18 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4392 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1043, Invalid=9669, Unknown=0, NotChecked=0, Total=10712 [2024-12-02 06:40:18,346 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 6 mSDsluCounter, 2039 mSDsCounter, 0 mSdLazyCounter, 4285 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 4285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:18,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2097 Invalid, 4285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4285 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 06:40:18,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-12-02 06:40:18,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-12-02 06:40:18,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.011764705882353) internal successors, (172), 170 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:40:18,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2024-12-02 06:40:18,348 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 165 [2024-12-02 06:40:18,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:18,348 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2024-12-02 06:40:18,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 3.8941176470588235) internal successors, (331), 86 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:40:18,348 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2024-12-02 06:40:18,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-12-02 06:40:18,348 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:18,349 INFO L218 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:40:18,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-12-02 06:40:18,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-12-02 06:40:18,549 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:40:18,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:18,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1522760863, now seen corresponding path program 32 times [2024-12-02 06:40:18,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:18,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087751891] [2024-12-02 06:40:18,549 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:40:18,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:18,616 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:40:18,616 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:40:20,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 53 proven. 1309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:40:20,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:20,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087751891] [2024-12-02 06:40:20,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087751891] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:40:20,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912833996] [2024-12-02 06:40:20,782 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:40:20,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:20,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:40:20,784 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:40:20,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-12-02 06:40:21,055 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:40:21,055 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:40:21,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 196 conjuncts are in the unsatisfiable core [2024-12-02 06:40:21,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:40:21,902 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 [2024-12-02 06:40:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 53 proven. 1309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:40:22,143 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:40:22,265 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 15 treesize of output 13 [2024-12-02 06:40:22,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-12-02 06:40:22,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 53 proven. 1309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:40:22,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912833996] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:40:22,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:40:22,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 44] total 70 [2024-12-02 06:40:22,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777917891] [2024-12-02 06:40:22,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:40:22,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-12-02 06:40:22,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:22,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-12-02 06:40:22,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=4655, Unknown=0, NotChecked=0, Total=4830 [2024-12-02 06:40:22,474 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand has 70 states, 70 states have (on average 3.585714285714286) internal successors, (251), 70 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:40:24,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:24,979 INFO L93 Difference]: Finished difference Result 271 states and 272 transitions. [2024-12-02 06:40:24,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-12-02 06:40:24,979 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 3.585714285714286) internal successors, (251), 70 states have internal predecessors, (251), 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 170 [2024-12-02 06:40:24,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:24,980 INFO L225 Difference]: With dead ends: 271 [2024-12-02 06:40:24,980 INFO L226 Difference]: Without dead ends: 178 [2024-12-02 06:40:24,980 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=265, Invalid=7217, Unknown=0, NotChecked=0, Total=7482 [2024-12-02 06:40:24,980 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 40 mSDsluCounter, 3505 mSDsCounter, 0 mSdLazyCounter, 4757 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3580 SdHoareTripleChecker+Invalid, 4774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 4757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:24,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3580 Invalid, 4774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 4757 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 06:40:24,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-12-02 06:40:24,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 175. [2024-12-02 06:40:24,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.0114942528735633) internal successors, (176), 174 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:40:24,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2024-12-02 06:40:24,982 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 170 [2024-12-02 06:40:24,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:24,982 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2024-12-02 06:40:24,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 3.585714285714286) internal successors, (251), 70 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:40:24,982 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2024-12-02 06:40:24,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 06:40:24,982 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:24,982 INFO L218 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:40:24,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-12-02 06:40:25,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-12-02 06:40:25,183 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:40:25,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:25,183 INFO L85 PathProgramCache]: Analyzing trace with hash -476246566, now seen corresponding path program 33 times [2024-12-02 06:40:25,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:25,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703454322] [2024-12-02 06:40:25,183 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 06:40:25,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:25,295 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-12-02 06:40:25,295 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:40:27,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 496 proven. 935 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:40:27,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:27,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703454322] [2024-12-02 06:40:27,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703454322] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:40:27,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809286390] [2024-12-02 06:40:27,963 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 06:40:27,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:27,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:40:27,964 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:40:27,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-12-02 06:40:44,764 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-12-02 06:40:44,764 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:40:44,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 152 conjuncts are in the unsatisfiable core [2024-12-02 06:40:44,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:40:46,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 612 proven. 819 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:40:46,746 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:40:48,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-12-02 06:40:49,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 561 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:40:49,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809286390] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:40:49,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:40:49,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 44, 43] total 132 [2024-12-02 06:40:49,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170773561] [2024-12-02 06:40:49,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:40:49,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2024-12-02 06:40:49,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:49,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2024-12-02 06:40:49,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2365, Invalid=15191, Unknown=0, NotChecked=0, Total=17556 [2024-12-02 06:40:49,302 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand has 133 states, 132 states have (on average 3.893939393939394) internal successors, (514), 133 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:40:51,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:51,848 INFO L93 Difference]: Finished difference Result 180 states and 181 transitions. [2024-12-02 06:40:51,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-12-02 06:40:51,849 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 132 states have (on average 3.893939393939394) internal successors, (514), 133 states have internal predecessors, (514), 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 174 [2024-12-02 06:40:51,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:51,849 INFO L225 Difference]: With dead ends: 180 [2024-12-02 06:40:51,849 INFO L226 Difference]: Without dead ends: 180 [2024-12-02 06:40:51,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11948 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=4169, Invalid=24561, Unknown=0, NotChecked=0, Total=28730 [2024-12-02 06:40:51,850 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 1465 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:51,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 573 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1465 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 06:40:51,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-12-02 06:40:51,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-12-02 06:40:51,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.011173184357542) internal successors, (181), 179 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:40:51,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 181 transitions. [2024-12-02 06:40:51,852 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 181 transitions. Word has length 174 [2024-12-02 06:40:51,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:51,852 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 181 transitions. [2024-12-02 06:40:51,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 132 states have (on average 3.893939393939394) internal successors, (514), 133 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:40:51,853 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 181 transitions. [2024-12-02 06:40:51,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 06:40:51,853 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:51,853 INFO L218 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:40:51,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-12-02 06:40:52,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-12-02 06:40:52,054 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:40:52,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:52,054 INFO L85 PathProgramCache]: Analyzing trace with hash 2027952926, now seen corresponding path program 34 times [2024-12-02 06:40:52,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:52,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092353315] [2024-12-02 06:40:52,054 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 06:40:52,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:52,128 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 06:40:52,128 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:40:54,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1523 backedges. 56 proven. 1467 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:40:54,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:54,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092353315] [2024-12-02 06:40:54,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092353315] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:40:54,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488267490] [2024-12-02 06:40:54,456 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 06:40:54,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:54,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:40:54,457 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:40:54,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-12-02 06:40:58,842 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 06:40:58,842 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:40:58,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 204 conjuncts are in the unsatisfiable core [2024-12-02 06:40:58,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:40:59,839 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 [2024-12-02 06:41:00,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1523 backedges. 56 proven. 1467 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:41:00,123 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:41:00,262 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 15 treesize of output 13 [2024-12-02 06:41:00,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-12-02 06:41:00,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1523 backedges. 56 proven. 1467 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:41:00,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488267490] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:41:00,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:41:00,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 72 [2024-12-02 06:41:00,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495341773] [2024-12-02 06:41:00,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:41:00,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-12-02 06:41:00,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:41:00,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-12-02 06:41:00,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=4933, Unknown=0, NotChecked=0, Total=5112 [2024-12-02 06:41:00,478 INFO L87 Difference]: Start difference. First operand 180 states and 181 transitions. Second operand has 72 states, 72 states have (on average 3.6527777777777777) internal successors, (263), 72 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:03,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:41:03,223 INFO L93 Difference]: Finished difference Result 285 states and 286 transitions. [2024-12-02 06:41:03,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-12-02 06:41:03,224 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 3.6527777777777777) internal successors, (263), 72 states have internal predecessors, (263), 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 179 [2024-12-02 06:41:03,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:41:03,224 INFO L225 Difference]: With dead ends: 285 [2024-12-02 06:41:03,225 INFO L226 Difference]: Without dead ends: 187 [2024-12-02 06:41:03,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=274, Invalid=7736, Unknown=0, NotChecked=0, Total=8010 [2024-12-02 06:41:03,225 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 45 mSDsluCounter, 4056 mSDsCounter, 0 mSdLazyCounter, 5462 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 4135 SdHoareTripleChecker+Invalid, 5480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 5462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:41:03,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 4135 Invalid, 5480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 5462 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 06:41:03,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-12-02 06:41:03,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 184. [2024-12-02 06:41:03,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.010928961748634) internal successors, (185), 183 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:03,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2024-12-02 06:41:03,228 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 179 [2024-12-02 06:41:03,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:41:03,229 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2024-12-02 06:41:03,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 3.6527777777777777) internal successors, (263), 72 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:03,229 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2024-12-02 06:41:03,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-12-02 06:41:03,229 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:41:03,229 INFO L218 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:41:03,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-12-02 06:41:03,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:41:03,430 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:41:03,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:41:03,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1949386949, now seen corresponding path program 35 times [2024-12-02 06:41:03,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:41:03,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171550826] [2024-12-02 06:41:03,430 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 06:41:03,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:41:03,574 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-12-02 06:41:03,574 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:41:05,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 630 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:41:05,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:41:05,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171550826] [2024-12-02 06:41:05,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171550826] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:41:05,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965326879] [2024-12-02 06:41:05,866 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 06:41:05,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:41:05,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:41:05,868 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:41:05,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-12-02 06:41:22,721 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-12-02 06:41:22,721 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:41:22,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 195 conjuncts are in the unsatisfiable core [2024-12-02 06:41:22,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:41:22,748 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 13 treesize of output 1 [2024-12-02 06:41:23,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 630 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:41:23,980 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:41:27,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 630 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:41:27,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965326879] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:41:27,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:41:27,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 44, 44] total 114 [2024-12-02 06:41:27,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283802420] [2024-12-02 06:41:27,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:41:27,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2024-12-02 06:41:27,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:41:27,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2024-12-02 06:41:27,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1683, Invalid=11427, Unknown=0, NotChecked=0, Total=13110 [2024-12-02 06:41:27,371 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand has 115 states, 114 states have (on average 3.9649122807017543) internal successors, (452), 115 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:30,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:41:30,444 INFO L93 Difference]: Finished difference Result 189 states and 190 transitions. [2024-12-02 06:41:30,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-12-02 06:41:30,445 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 114 states have (on average 3.9649122807017543) internal successors, (452), 115 states have internal predecessors, (452), 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 183 [2024-12-02 06:41:30,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:41:30,446 INFO L225 Difference]: With dead ends: 189 [2024-12-02 06:41:30,446 INFO L226 Difference]: Without dead ends: 189 [2024-12-02 06:41:30,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5916 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2015, Invalid=16075, Unknown=0, NotChecked=0, Total=18090 [2024-12-02 06:41:30,446 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 6 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 4795 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 4795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:41:30,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2382 Invalid, 4795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4795 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 06:41:30,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-12-02 06:41:30,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2024-12-02 06:41:30,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.0106382978723405) internal successors, (190), 188 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:30,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2024-12-02 06:41:30,448 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 183 [2024-12-02 06:41:30,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:41:30,448 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2024-12-02 06:41:30,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 114 states have (on average 3.9649122807017543) internal successors, (452), 115 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:30,448 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2024-12-02 06:41:30,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-12-02 06:41:30,449 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:41:30,449 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:41:30,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-12-02 06:41:30,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:41:30,649 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:41:30,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:41:30,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1360856301, now seen corresponding path program 36 times [2024-12-02 06:41:30,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:41:30,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521473106] [2024-12-02 06:41:30,650 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 06:41:30,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:41:30,803 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2024-12-02 06:41:30,803 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:41:33,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 59 proven. 1634 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:41:33,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:41:33,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521473106] [2024-12-02 06:41:33,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521473106] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:41:33,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764110052] [2024-12-02 06:41:33,560 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 06:41:33,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:41:33,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:41:33,561 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:41:33,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-12-02 06:43:53,634 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2024-12-02 06:43:53,634 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:43:53,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 306 conjuncts are in the unsatisfiable core [2024-12-02 06:43:53,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:43:55,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 06:43:57,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 59 proven. 1634 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:43:57,230 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:43:57,571 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 15 treesize of output 13 [2024-12-02 06:43:57,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-12-02 06:43:59,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 59 proven. 1634 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:43:59,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764110052] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:43:59,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:43:59,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 48, 48] total 122 [2024-12-02 06:43:59,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573986366] [2024-12-02 06:43:59,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:43:59,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2024-12-02 06:43:59,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:43:59,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2024-12-02 06:43:59,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=14407, Unknown=0, NotChecked=0, Total=14762 [2024-12-02 06:43:59,082 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand has 122 states, 122 states have (on average 3.7459016393442623) internal successors, (457), 122 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:44:03,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:44:03,296 INFO L93 Difference]: Finished difference Result 299 states and 300 transitions. [2024-12-02 06:44:03,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-12-02 06:44:03,296 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 3.7459016393442623) internal successors, (457), 122 states have internal predecessors, (457), 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 188 [2024-12-02 06:44:03,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:44:03,297 INFO L225 Difference]: With dead ends: 299 [2024-12-02 06:44:03,297 INFO L226 Difference]: Without dead ends: 196 [2024-12-02 06:44:03,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4139 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=483, Invalid=20109, Unknown=0, NotChecked=0, Total=20592 [2024-12-02 06:44:03,298 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 41 mSDsluCounter, 6001 mSDsCounter, 0 mSdLazyCounter, 8093 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 6084 SdHoareTripleChecker+Invalid, 8112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 8093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:44:03,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 6084 Invalid, 8112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 8093 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-12-02 06:44:03,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-12-02 06:44:03,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 193. [2024-12-02 06:44:03,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.0104166666666667) internal successors, (194), 192 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:44:03,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2024-12-02 06:44:03,300 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 188 [2024-12-02 06:44:03,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:44:03,300 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2024-12-02 06:44:03,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 3.7459016393442623) internal successors, (457), 122 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:44:03,300 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2024-12-02 06:44:03,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-12-02 06:44:03,301 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:44:03,301 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:44:03,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-12-02 06:44:03,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:44:03,502 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:44:03,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:44:03,502 INFO L85 PathProgramCache]: Analyzing trace with hash 595409228, now seen corresponding path program 37 times [2024-12-02 06:44:03,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:44:03,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672431683] [2024-12-02 06:44:03,502 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 06:44:03,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:44:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:44:06,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 630 proven. 1140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:44:06,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:44:06,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672431683] [2024-12-02 06:44:06,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672431683] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:44:06,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425734059] [2024-12-02 06:44:06,154 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 06:44:06,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:44:06,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:44:06,156 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:44:06,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-12-02 06:44:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:44:06,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 198 conjuncts are in the unsatisfiable core [2024-12-02 06:44:06,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:44:07,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 703 proven. 1067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:44:07,807 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:44:09,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-12-02 06:44:10,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 703 proven. 1067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:44:10,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425734059] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:44:10,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:44:10,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 97 [2024-12-02 06:44:10,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805817236] [2024-12-02 06:44:10,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:44:10,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-12-02 06:44:10,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:44:10,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-12-02 06:44:10,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1031, Invalid=8475, Unknown=0, NotChecked=0, Total=9506 [2024-12-02 06:44:10,410 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand has 98 states, 97 states have (on average 3.9690721649484537) internal successors, (385), 98 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:44:13,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:44:13,240 INFO L93 Difference]: Finished difference Result 198 states and 199 transitions. [2024-12-02 06:44:13,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-12-02 06:44:13,241 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 3.9690721649484537) internal successors, (385), 98 states have internal predecessors, (385), 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 192 [2024-12-02 06:44:13,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:44:13,242 INFO L225 Difference]: With dead ends: 198 [2024-12-02 06:44:13,242 INFO L226 Difference]: Without dead ends: 198 [2024-12-02 06:44:13,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 312 SyntacticMatches, 21 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5916 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1367, Invalid=12675, Unknown=0, NotChecked=0, Total=14042 [2024-12-02 06:44:13,243 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 6 mSDsluCounter, 2215 mSDsCounter, 0 mSdLazyCounter, 4763 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2282 SdHoareTripleChecker+Invalid, 4763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:44:13,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2282 Invalid, 4763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4763 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 06:44:13,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-12-02 06:44:13,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2024-12-02 06:44:13,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.0101522842639594) internal successors, (199), 197 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:44:13,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 199 transitions. [2024-12-02 06:44:13,246 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 199 transitions. Word has length 192 [2024-12-02 06:44:13,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:44:13,246 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 199 transitions. [2024-12-02 06:44:13,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 3.9690721649484537) internal successors, (385), 98 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:44:13,246 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 199 transitions. [2024-12-02 06:44:13,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-12-02 06:44:13,247 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:44:13,247 INFO L218 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:44:13,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-12-02 06:44:13,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-12-02 06:44:13,447 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:44:13,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:44:13,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1206601452, now seen corresponding path program 38 times [2024-12-02 06:44:13,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:44:13,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518900292] [2024-12-02 06:44:13,448 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:44:13,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:44:13,523 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:44:13,523 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:44:16,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 62 proven. 1810 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:44:16,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:44:16,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518900292] [2024-12-02 06:44:16,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518900292] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:44:16,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790890718] [2024-12-02 06:44:16,377 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:44:16,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:44:16,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:44:16,379 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:44:16,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-12-02 06:44:16,724 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:44:16,724 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:44:16,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 226 conjuncts are in the unsatisfiable core [2024-12-02 06:44:16,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:44:17,893 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 [2024-12-02 06:44:18,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 62 proven. 1810 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:44:18,208 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:44:18,352 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 15 treesize of output 13 [2024-12-02 06:44:18,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-12-02 06:44:18,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 62 proven. 1810 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:44:18,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790890718] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:44:18,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:44:18,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 50] total 79 [2024-12-02 06:44:18,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98121505] [2024-12-02 06:44:18,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:44:18,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-12-02 06:44:18,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:44:18,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-12-02 06:44:18,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=5966, Unknown=0, NotChecked=0, Total=6162 [2024-12-02 06:44:18,583 INFO L87 Difference]: Start difference. First operand 198 states and 199 transitions. Second operand has 79 states, 79 states have (on average 3.670886075949367) internal successors, (290), 79 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:44:22,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:44:22,035 INFO L93 Difference]: Finished difference Result 313 states and 314 transitions. [2024-12-02 06:44:22,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-12-02 06:44:22,035 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 3.670886075949367) internal successors, (290), 79 states have internal predecessors, (290), 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 197 [2024-12-02 06:44:22,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:44:22,036 INFO L225 Difference]: With dead ends: 313 [2024-12-02 06:44:22,036 INFO L226 Difference]: Without dead ends: 205 [2024-12-02 06:44:22,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=301, Invalid=9401, Unknown=0, NotChecked=0, Total=9702 [2024-12-02 06:44:22,037 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 46 mSDsluCounter, 5094 mSDsCounter, 0 mSdLazyCounter, 6819 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 5181 SdHoareTripleChecker+Invalid, 6839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 6819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:44:22,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 5181 Invalid, 6839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 6819 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 06:44:22,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-12-02 06:44:22,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 202. [2024-12-02 06:44:22,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.0099502487562189) internal successors, (203), 201 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:44:22,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 203 transitions. [2024-12-02 06:44:22,038 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 203 transitions. Word has length 197 [2024-12-02 06:44:22,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:44:22,039 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 203 transitions. [2024-12-02 06:44:22,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 3.670886075949367) internal successors, (290), 79 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:44:22,039 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 203 transitions. [2024-12-02 06:44:22,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-12-02 06:44:22,039 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:44:22,040 INFO L218 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:44:22,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-12-02 06:44:22,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2024-12-02 06:44:22,240 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:44:22,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:44:22,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1907296045, now seen corresponding path program 39 times [2024-12-02 06:44:22,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:44:22,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728291899] [2024-12-02 06:44:22,240 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 06:44:22,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:44:22,397 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-12-02 06:44:22,397 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:44:25,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 703 proven. 1250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:44:25,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:44:25,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728291899] [2024-12-02 06:44:25,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728291899] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:44:25,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560287752] [2024-12-02 06:44:25,699 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 06:44:25,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:44:25,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:44:25,700 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:44:25,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-12-02 06:45:10,204 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-12-02 06:45:10,204 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:45:10,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 167 conjuncts are in the unsatisfiable core [2024-12-02 06:45:10,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:45:11,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 780 proven. 1173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:11,377 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:45:13,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-12-02 06:45:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 780 proven. 1173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:13,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560287752] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:45:13,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:45:13,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 49, 49] total 107 [2024-12-02 06:45:13,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794643722] [2024-12-02 06:45:13,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:45:13,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2024-12-02 06:45:13,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:45:13,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2024-12-02 06:45:13,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1684, Invalid=9872, Unknown=0, NotChecked=0, Total=11556 [2024-12-02 06:45:13,886 INFO L87 Difference]: Start difference. First operand 202 states and 203 transitions. Second operand has 108 states, 107 states have (on average 3.878504672897196) internal successors, (415), 108 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:45:16,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:45:16,239 INFO L93 Difference]: Finished difference Result 207 states and 208 transitions. [2024-12-02 06:45:16,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-12-02 06:45:16,240 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 107 states have (on average 3.878504672897196) internal successors, (415), 108 states have internal predecessors, (415), 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 201 [2024-12-02 06:45:16,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:45:16,241 INFO L225 Difference]: With dead ends: 207 [2024-12-02 06:45:16,241 INFO L226 Difference]: Without dead ends: 207 [2024-12-02 06:45:16,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 327 SyntacticMatches, 22 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10204 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=3517, Invalid=18833, Unknown=0, NotChecked=0, Total=22350 [2024-12-02 06:45:16,242 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 3 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 1719 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 06:45:16,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 661 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1719 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 06:45:16,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-12-02 06:45:16,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2024-12-02 06:45:16,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.0097087378640777) internal successors, (208), 206 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:45:16,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2024-12-02 06:45:16,244 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 201 [2024-12-02 06:45:16,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:45:16,244 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2024-12-02 06:45:16,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 107 states have (on average 3.878504672897196) internal successors, (415), 108 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:45:16,244 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2024-12-02 06:45:16,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-12-02 06:45:16,244 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:45:16,244 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:45:16,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-12-02 06:45:16,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-12-02 06:45:16,445 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:45:16,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:45:16,445 INFO L85 PathProgramCache]: Analyzing trace with hash 2096440261, now seen corresponding path program 40 times [2024-12-02 06:45:16,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:45:16,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884217224] [2024-12-02 06:45:16,445 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 06:45:16,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:45:16,534 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 06:45:16,534 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:45:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2060 backedges. 65 proven. 1995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:19,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:45:19,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884217224] [2024-12-02 06:45:19,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884217224] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:45:19,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807768408] [2024-12-02 06:45:19,488 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 06:45:19,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:45:19,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:45:19,490 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:45:19,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-12-02 06:45:31,216 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 06:45:31,216 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:45:31,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 236 conjuncts are in the unsatisfiable core [2024-12-02 06:45:31,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:45:32,474 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 [2024-12-02 06:45:32,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2060 backedges. 65 proven. 1995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:32,781 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:45:32,930 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 15 treesize of output 13 [2024-12-02 06:45:32,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-12-02 06:45:33,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2060 backedges. 65 proven. 1995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:33,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807768408] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:45:33,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:45:33,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 81 [2024-12-02 06:45:33,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443998694] [2024-12-02 06:45:33,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:45:33,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-12-02 06:45:33,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:45:33,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-12-02 06:45:33,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=6280, Unknown=0, NotChecked=0, Total=6480 [2024-12-02 06:45:33,137 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand has 81 states, 81 states have (on average 3.728395061728395) internal successors, (302), 81 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:45:36,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:45:36,762 INFO L93 Difference]: Finished difference Result 327 states and 328 transitions. [2024-12-02 06:45:36,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-12-02 06:45:36,762 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 3.728395061728395) internal successors, (302), 81 states have internal predecessors, (302), 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 206 [2024-12-02 06:45:36,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:45:36,764 INFO L225 Difference]: With dead ends: 327 [2024-12-02 06:45:36,764 INFO L226 Difference]: Without dead ends: 214 [2024-12-02 06:45:36,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=310, Invalid=9992, Unknown=0, NotChecked=0, Total=10302 [2024-12-02 06:45:36,764 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 48 mSDsluCounter, 5459 mSDsCounter, 0 mSdLazyCounter, 7268 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 5550 SdHoareTripleChecker+Invalid, 7289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 7268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 06:45:36,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 5550 Invalid, 7289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 7268 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 06:45:36,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-12-02 06:45:36,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 211. [2024-12-02 06:45:36,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.0095238095238095) internal successors, (212), 210 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:45:36,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2024-12-02 06:45:36,768 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 206 [2024-12-02 06:45:36,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:45:36,768 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2024-12-02 06:45:36,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 3.728395061728395) internal successors, (302), 81 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:45:36,768 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2024-12-02 06:45:36,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-12-02 06:45:36,769 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:45:36,769 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:45:36,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-12-02 06:45:36,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:45:36,970 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:45:36,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:45:36,970 INFO L85 PathProgramCache]: Analyzing trace with hash -844388930, now seen corresponding path program 41 times [2024-12-02 06:45:36,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:45:36,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974480595] [2024-12-02 06:45:36,970 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 06:45:36,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:45:37,146 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2024-12-02 06:45:37,146 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:45:40,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 861 proven. 1284 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:40,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:45:40,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974480595] [2024-12-02 06:45:40,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974480595] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:45:40,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110704757] [2024-12-02 06:45:40,038 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 06:45:40,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:45:40,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:45:40,040 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:45:40,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-12-02 06:47:21,698 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2024-12-02 06:47:21,699 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:47:21,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 222 conjuncts are in the unsatisfiable core [2024-12-02 06:47:21,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:47:21,748 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 [2024-12-02 06:47:23,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 861 proven. 1284 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:47:23,739 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:47:28,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 861 proven. 1284 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:47:28,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110704757] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:47:28,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:47:28,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 50, 50] total 130 [2024-12-02 06:47:28,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541198031] [2024-12-02 06:47:28,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:47:28,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2024-12-02 06:47:28,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:47:28,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2024-12-02 06:47:28,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1873, Invalid=15157, Unknown=0, NotChecked=0, Total=17030 [2024-12-02 06:47:28,030 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand has 131 states, 130 states have (on average 4.0) internal successors, (520), 131 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:47:31,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:47:31,672 INFO L93 Difference]: Finished difference Result 216 states and 217 transitions. [2024-12-02 06:47:31,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-12-02 06:47:31,673 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 130 states have (on average 4.0) internal successors, (520), 131 states have internal predecessors, (520), 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 210 [2024-12-02 06:47:31,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:47:31,673 INFO L225 Difference]: With dead ends: 216 [2024-12-02 06:47:31,673 INFO L226 Difference]: Without dead ends: 216 [2024-12-02 06:47:31,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6250 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=2290, Invalid=21272, Unknown=0, NotChecked=0, Total=23562 [2024-12-02 06:47:31,674 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 3 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 5582 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 5582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:47:31,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2678 Invalid, 5582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5582 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 06:47:31,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-12-02 06:47:31,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-12-02 06:47:31,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.0093023255813953) internal successors, (217), 215 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:47:31,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2024-12-02 06:47:31,677 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 210 [2024-12-02 06:47:31,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:47:31,677 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2024-12-02 06:47:31,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 130 states have (on average 4.0) internal successors, (520), 131 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:47:31,677 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2024-12-02 06:47:31,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-12-02 06:47:31,678 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:47:31,678 INFO L218 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:47:31,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-12-02 06:47:31,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:47:31,878 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-12-02 06:47:31,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:47:31,878 INFO L85 PathProgramCache]: Analyzing trace with hash -664219206, now seen corresponding path program 42 times [2024-12-02 06:47:31,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:47:31,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754967214] [2024-12-02 06:47:31,879 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 06:47:31,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:47:32,073 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2024-12-02 06:47:32,073 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:47:35,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2257 backedges. 68 proven. 2189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:47:35,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:47:35,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754967214] [2024-12-02 06:47:35,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754967214] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:47:35,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353137859] [2024-12-02 06:47:35,607 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 06:47:35,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:47:35,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:47:35,608 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:47:35,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f42e522-71c0-43e9-99a5-254059243ebb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process